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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 楊哲人(Jer-Ren Yang) | |
dc.contributor.author | SHIH-YU CHEN | en |
dc.contributor.author | 陳思妤 | zh_TW |
dc.date.accessioned | 2021-06-16T13:01:37Z | - |
dc.date.available | 2020-07-22 | |
dc.date.copyright | 2020-07-22 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-06-30 | |
dc.identifier.citation | Z. Wu, H. Bei, F. Otto, G.M. Pharr, E.P. George, Recovery, recrystallization, grain growth and phase stability of a family of FCC-structured multi-component equiatomic solid solution alloys, Intermetallics 46 (2014) 131-140. [2] B. Gludovatz, A. Hohenwarter, K.V. Thurston, H. Bei, Z. Wu, E.P. George, R.O. Ritchie, Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures, Nature Communications 7(1) (2016) 1-8. [3] G. Laplanche, A. Kostka, C. Reinhart, J. Hunfeld, G. Eggeler, E. George, Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi, Acta Materialia 128 (2017) 292-303. [4] J. Miao, C. Slone, T. Smith, C. Niu, H. Bei, M. Ghazisaeidi, G. Pharr, M.J. Mills, The evolution of the deformation substructure in a Ni-Co-Cr equiatomic solid solution alloy, Acta Materialia 132 (2017) 35-48. [5] A. Gali, E.P. George, Tensile properties of high-and medium-entropy alloys, Intermetallics 39 (2013) 74-78. [6] B. Gludovatz, A. Hohenwarter, D. Catoor, E.H. Chang, E.P. George, R.O. Ritchie, A fracture-resistant high-entropy alloy for cryogenic applications, Science 345(6201) (2014) 1153-1158. [7] G. Laplanche, A. Kostka, O. Horst, G. Eggeler, E. George, Microstructure evolution and critical stress for twinning in the CrMnFeCoNi high-entropy alloy, Acta Materialia 118 (2016) 152-163. [8] B. Cantor, I. Chang, P. Knight, A. Vincent, Microstructural development in equiatomic multicomponent alloys, Materials Science and Engineering: A 375 (2004) 213-218. [9] O. Grässel, L. Krüger, G. Frommeyer, L. Meyer, High strength Fe–Mn–(Al, Si) TRIP/TWIP steels development—properties—application, International Journal of plasticity 16(10-11) (2000) 1391-1409. [10] S. Yoshida, T. Bhattacharjee, Y. Bai, N. Tsuji, Friction stress and Hall-Petch relationship in CoCrNi equi-atomic medium entropy alloy processed by severe plastic deformation and subsequent annealing, Scripta Materialia 134 (2017) 33-36. [11] H. Shahmir, J. He, Z. Lu, M. Kawasaki, T.G. Langdon, Effect of annealing on mechanical properties of a nanocrystalline CoCrFeNiMn high-entropy alloy processed by high-pressure torsion, Materials Science and Engineering: A 676 (2016) 294-303. [12] Y. Wang, M. Chen, F. Zhou, E. Ma, High tensile ductility in a nanostructured metal, Nature Communications 419(6910) (2002) 912-915. [13] O. Bouaziz, C. Scott, G. Petitgand, Nanostructured steel with high work-hardening by the exploitation of the thermal stability of mechanically induced twins, Scripta Materialia 60(8) (2009) 714-716. [14] Y. Jo, S. Jung, W. Choi, S.S. Sohn, H.S. Kim, B. Lee, N.J. Kim, S. Lee, Cryogenic strength improvement by utilizing room-temperature deformation twinning in a partially recrystallized VCrMnFeCoNi high-entropy alloy, Nature Communications 8(1) (2017) 1-8. [15] C. Slone, J. Miao, E.P. George, M.J. Mills, Achieving ultra-high strength and ductility in equiatomic CrCoNi with partially recrystallized microstructures, Acta Materialia 165 (2019) 496-507. [16] S. Gorsse, J.-P. Couzinié, D.B. Miracle, From high-entropy alloys to complex concentrated alloys, Comptes Rendus Physique 19(8) (2018) 721-736. [17] J.W. Yeh, S.K. Chen, S.J. Lin, J.Y. Gan, T.S. Chin, T.T. Shun, C.H. Tsau, S.Y. Chang, Nanostructured high‐entropy alloys with multiple principal elements: novel alloy design concepts and outcomes, Advanced Engineering Materials 6(5) (2004) 299-303. [18] D.B. Miracle, O.N. Senkov, A critical review of high entropy alloys and related concepts, Acta Materialia 122 (2017) 448-511. [19] J. Yeh, Recent progress in high-entropy alloys; Progres recents dans les alliages a haute entropie, Annales de Chimie. Science des Materiaux (Paris) (2006). [20] T.M. Smith, M.S. Hooshmand, B.D. Esser, F. Otto, D.W. McComb, E.P. George, M. Ghazisaeidi, M.J. Mills, Atomic-scale characterization and modeling of 60 dislocations in a high-entropy alloy, Acta Materialia 110 (2016) 352-363. [21] C. Niu, C.R. LaRosa, J. Miao, M.J. Mills, M. Ghazisaeidi, Magnetically-driven phase transformation strengthening in high entropy alloys, Nature Communications 9(1) (2018) 1-9. [22] D.B. Miracle, High-entropy alloys: A current evaluation of founding ideas and core effects and exploring “nonlinear alloys”, Jom 69(11) (2017) 2130-2136. [23] B.S. Murty, J.-W. Yeh, S. Ranganathan, P. Bhattacharjee, High-entropy alloys, Elsevier2019. [24] D.B. Miracle, J.D. Miller, O.N. Senkov, C. Woodward, M.D. Uchic, J. Tiley, Exploration and development of high entropy alloys for structural applications, Entropy 16(1) (2014) 494-525. [25] J.-W. Yeh, Alloy design strategies and future trends in high-entropy alloys, Jom 65(12) (2013) 1759-1771. [26] J.-W. Yeh, S.-J. Lin, T.-S. Chin, J.-Y. Gan, S.-K. Chen, T.-T. Shun, C.-H. Tsau, S.-Y. Chou, Formation of simple crystal structures in Cu-Co-Ni-Cr-Al-Fe-Ti-V alloys with multiprincipal metallic elements, Metallurgical Materials Transactions A Volume 35 (8) (2004) 2533-2536. [27] J.-W. Yeh, Physical metallurgy of high-entropy alloys, Jom 67(10) (2015) 2254-2261. [28] S. Ranganathan, Alloyed pleasures: multimetallic cocktails, Current science 85(5) (2003) 1404-1406. [29] G. Smith, Personal communica-tion, AC Neilsen (2011). [30] A. Manzoni, H. Daoud, S. Mondal, S. van Smaalen, R. Völkl, U. Glatzel, N. Wanderka, Investigation of phases in Al23Co15Cr23Cu8Fe15Ni16 and Al8Co17Cr17Cu8Fe17Ni33 high entropy alloys and comparison with equilibrium phases predicted by Thermo-Calc, Journal of alloys compounds 552 (2013) 430-436. [31] K. Pradeep, N. Wanderka, P. Choi, J. Banhart, B. Murty, D. Raabe, Atomic-scale compositional characterization of a nanocrystalline AlCrCuFeNiZn high-entropy alloy using atom probe tomography, Acta Materialia 61(12) (2013) 4696-4706. [32] X. Yang, S. Chen, J. Cotton, Y. Zhang, Phase stability of low-density, multiprincipal component alloys containing aluminum, magnesium, and lithium, Jom 66(10) (2014) 2009-2020. [33] F. Otto, A. Dlouhý, K.G. Pradeep, M. Kuběnová, D. Raabe, G. Eggeler, E.P. George, Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures, Acta Materialia 112 (2016) 40-52. [34] S. Guo, C. Ng, Z. Wang, C. Liu, Solid solutioning in equiatomic alloys: limit set by topological instability, Journal of alloys compounds 583 (2014) 410-413. [35] Z. Wang, S. Guo, C.T. Liu, Phase selection in high-entropy alloys: from nonequilibrium to equilibrium, Jom 66(10) (2014) 1966-1972. [36] Z. Wu, H. Bei, G.M. Pharr, E.P. George, Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures, Acta Materialia 81 (2014) 428-441. [37] F. Otto, A. Dlouhý, C. Somsen, H. Bei, G. Eggeler, E.P. George, The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy, Acta Materialia 61(15) (2013) 5743-5755. [38] Z. Zhang, M. Mao, J. Wang, B. Gludovatz, Z. Zhang, S.X. Mao, E.P. George, Q. Yu, R.O. Ritchie, Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi, Nature Communications 6(1) (2015) 1-6. [39] N.L. Okamoto, S. Fujimoto, Y. Kambara, M. Kawamura, Z.M. Chen, H. Matsunoshita, K. Tanaka, H. Inui, E.P. George, Size effect, critical resolved shear stress, stacking fault energy, and solid solution strengthening in the CrMnFeCoNi high-entropy alloy, Scientific reports 6 (2016) 35863. [40] C. Slone, S. Chakraborty, J. Miao, E.P. George, M.J. Mills, S. Niezgoda, Influence of deformation induced nanoscale twinning and FCC-HCP transformation on hardening and texture development in medium-entropy CrCoNi alloy, Acta Materialia 158 (2018) 38-52. [41] J. Cahoon, Q. Li, N. Richards, Microstructural and processing factors influencing the formation of annealing twins, Materials Science and Engineering: A 526(1-2) (2009) 56-61. [42] Y. Jin, B. Lin, M. Bernacki, G.S. Rohrer, A. Rollett, N. Bozzolo, Annealing twin development during recrystallization and grain growth in pure nickel, Materials Science and Engineering: A 597 (2014) 295-303. [43] S.-W. Kim, X. Li, H. Gao, S. Kumar, In situ observations of crack arrest and bridging by nanoscale twins in copper thin films, Acta Materialia 60(6-7) (2012) 2959-2972. [44] L. Lu, R. Schwaiger, Z. Shan, M. Dao, K. Lu, S. Suresh, Nano-sized twins induce high rate sensitivity of flow stress in pure copper, Acta Materialia 53(7) (2005) 2169-2179. [45] H. Gleiter, The mechanism of grain boundary migration, Acta metallurgica 17(5) (1969) 565-573. [46] Y.-L. Chu, 單晶相石墨烯製備與特性分析, National Central University, 2014. [47] S. Mahajan, C. Pande, M. Imam, B. Rath, Formation of annealing twins in fcc crystals, Acta Materialia 45(6) (1997) 2633-2638. [48] W.D. Callister, D.G. Rethwisch, Materials science and engineering, John wiley sons NY2011. [49] E. Cerreta, S. Mahajan, Formation of deformation twins in TiAl, Acta Materialia 49(18) (2001) 3803-3809. [50] S. Mahajan, G. Chin, Formation of deformation twins in fcc crystals, Acta metallurgica 21(10) (1973) 1353-1363. [51] K.J. Buschow, R.W. Cahn, M.C. Flemings, B. Ilschner, E.J. Kramer, S. Mahajan, Encyclopedia of materials, Science technology 1 (2001) 11. [52] S. Mahajan, The evolution of intrinsic-extrinsic faulting in fcc crystals, Metallurgical Transactions A 6(10) (1975) 1877. [53] J. Venables, Deformation twinning in face-centred cubic metals, Philosophical magazine 6(63) (1961) 379-396. [54] H. Gleiter, The formation of annealing twins, Acta metallurgica 17(12) (1969) 1421-1428. [55] A. Tyumentsev, N. Surikova, I.Y. Litovchenko, Y.P. Pinzhin, A. Korotaev, O. Lysenko, Mechanism of deformation and crystal lattice reorientation in strain localization bands and deformation twins of the B2 phase of titanium nickelide, Acta Materialia 52(7) (2004) 2067-2074. [56] J.W. Christian, S. Mahajan, Deformation twinning, Progress in materials science 39(1-2) (1995) 1-157. [57] X. Wu, X. Liao, S. Srinivasan, F. Zhou, E. Lavernia, R. Valiev, Y. 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Zhu, Partial-dislocation-mediated processes in nanocrystalline Ni with nonequilibrium grain boundaries, Applied physics letters 89(3) (2006) 031922. [69] L. Lu, Y. Shen, X. Chen, L. Qian, K. Lu, Ultrahigh strength and high electrical conductivity in copper, Science 304(5669) (2004) 422-426. [70] K. Lu, L. Lu, S. Suresh, Strengthening materials by engineering coherent internal boundaries at the nanoscale, Science 324(5925) (2009) 349-352. [71] K.A. Afanasyev, F. Sansoz, Strengthening in gold nanopillars with nanoscale twins, Nano Letters 7(7) (2007) 2056-2062. [72] B. Oh, S. Cho, Y. Kim, Y. Kim, W. Kim, S. Hong, Effect of aluminium on deformation mode and mechanical properties of austenitic FeMnCrAlC alloys, Materials Science and Engineering: A 197(2) (1995) 147-156. [73] L. Hsin-Yi, Studies on nanostructure for annealing twin in α-brass and transformation twin in high-carbonic martensite, Department of Materials Science and Engineering, National Taiwan University, 2010. [1] Z. Wu, H. Bei, F. Otto, G.M. Pharr, E.P. George, Recovery, recrystallization, grain growth and phase stability of a family of FCC-structured multi-component equiatomic solid solution alloys, Intermetallics 46 (2014) 131-140. [2] B. Gludovatz, A. Hohenwarter, K.V. Thurston, H. Bei, Z. Wu, E.P. George, R.O. Ritchie, Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures, Nature Communications 7(1) (2016) 1-8. [3] G. Laplanche, A. Kostka, C. Reinhart, J. Hunfeld, G. Eggeler, E. George, Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi, Acta Materialia 128 (2017) 292-303. [4] J. Miao, C. Slone, T. Smith, C. Niu, H. Bei, M. Ghazisaeidi, G. Pharr, M.J. Mills, The evolution of the deformation substructure in a Ni-Co-Cr equiatomic solid solution alloy, Acta Materialia 132 (2017) 35-48. [5] A. Gali, E.P. George, Tensile properties of high-and medium-entropy alloys, Intermetallics 39 (2013) 74-78. [6] B. Gludovatz, A. Hohenwarter, D. Catoor, E.H. Chang, E.P. George, R.O. Ritchie, A fracture-resistant high-entropy alloy for cryogenic applications, Science 345(6201) (2014) 1153-1158. [7] G. Laplanche, A. Kostka, O. Horst, G. Eggeler, E. George, Microstructure evolution and critical stress for twinning in the CrMnFeCoNi high-entropy alloy, Acta Materialia 118 (2016) 152-163. [8] B. Cantor, I. Chang, P. Knight, A. Vincent, Microstructural development in equiatomic multicomponent alloys, Materials Science and Engineering: A 375 (2004) 213-218. [9] O. Grässel, L. Krüger, G. Frommeyer, L. Meyer, High strength Fe–Mn–(Al, Si) TRIP/TWIP steels development—properties—application, International Journal of plasticity 16(10-11) (2000) 1391-1409. [10] S. Yoshida, T. Bhattacharjee, Y. Bai, N. Tsuji, Friction stress and Hall-Petch relationship in CoCrNi equi-atomic medium entropy alloy processed by severe plastic deformation and subsequent annealing, Scripta Materialia 134 (2017) 33-36. [11] H. Shahmir, J. He, Z. Lu, M. Kawasaki, T.G. Langdon, Effect of annealing on mechanical properties of a nanocrystalline CoCrFeNiMn high-entropy alloy processed by high-pressure torsion, Materials Science and Engineering: A 676 (2016) 294-303. [12] Y. Wang, M. Chen, F. Zhou, E. Ma, High tensile ductility in a nanostructured metal, Nature Communications 419(6910) (2002) 912-915. [13] O. Bouaziz, C. Scott, G. Petitgand, Nanostructured steel with high work-hardening by the exploitation of the thermal stability of mechanically induced twins, Scripta Materialia 60(8) (2009) 714-716. [14] Y. Jo, S. Jung, W. Choi, S.S. Sohn, H.S. Kim, B. Lee, N.J. Kim, S. Lee, Cryogenic strength improvement by utilizing room-temperature deformation twinning in a partially recrystallized VCrMnFeCoNi high-entropy alloy, Nature Communications 8(1) (2017) 1-8. [15] C. Slone, J. Miao, E.P. George, M.J. Mills, Achieving ultra-high strength and ductility in equiatomic CrCoNi with partially recrystallized microstructures, Acta Materialia 165 (2019) 496-507. [16] S. Gorsse, J.-P. Couzinié, D.B. Miracle, From high-entropy alloys to complex concentrated alloys, Comptes Rendus Physique 19(8) (2018) 721-736. [17] J.W. Yeh, S.K. Chen, S.J. Lin, J.Y. Gan, T.S. Chin, T.T. Shun, C.H. Tsau, S.Y. Chang, Nanostructured high‐entropy alloys with multiple principal elements: novel alloy design concepts and outcomes, Advanced Engineering Materials 6(5) (2004) 299-303. [18] D.B. Miracle, O.N. Senkov, A critical review of high entropy alloys and related concepts, Acta Materialia 122 (2017) 448-511. [19] J. Yeh, Recent progress in high-entropy alloys; Progres recents dans les alliages a haute entropie, Annales de Chimie. Science des Materiaux (Paris) (2006). [20] T.M. Smith, M.S. Hooshmand, B.D. Esser, F. Otto, D.W. McComb, E.P. George, M. Ghazisaeidi, M.J. Mills, Atomic-scale characterization and modeling of 60 dislocations in a high-entropy alloy, Acta Materialia 110 (2016) 352-363. [21] C. Niu, C.R. LaRosa, J. Miao, M.J. Mills, M. Ghazisaeidi, Magnetically-driven phase transformation strengthening in high entropy alloys, Nature Communications 9(1) (2018) 1-9. [22] D.B. Miracle, High-entropy alloys: A current evaluation of founding ideas and core effects and exploring “nonlinear alloys”, Jom 69(11) (2017) 2130-2136. [23] B.S. Murty, J.-W. Yeh, S. Ranganathan, P. Bhattacharjee, High-entropy alloys, Elsevier2019. [24] D.B. Miracle, J.D. Miller, O.N. Senkov, C. Woodward, M.D. Uchic, J. Tiley, Exploration and development of high entropy alloys for structural applications, Entropy 16(1) (2014) 494-525. [25] J.-W. Yeh, Alloy design strategies and future trends in high-entropy alloys, Jom 65(12) (2013) 1759-1771. [26] J.-W. Yeh, S.-J. Lin, T.-S. Chin, J.-Y. Gan, S.-K. Chen, T.-T. Shun, C.-H. Tsau, S.-Y. Chou, Formation of simple crystal structures in Cu-Co-Ni-Cr-Al-Fe-Ti-V alloys with multiprincipal metallic elements, Metallurgical Materials Transactions A Volume 35 (8) (2004) 2533-2536. [27] J.-W. Yeh, Physical metallurgy of high-entropy alloys, Jom 67(10) (2015) 2254-2261. [28] S. Ranganathan, Alloyed pleasures: multimetallic cocktails, Current science 85(5) (2003) 1404-1406. [29] G. Smith, Personal communica-tion, AC Neilsen (2011). [30] A. Manzoni, H. Daoud, S. Mondal, S. van Smaalen, R. Völkl, U. Glatzel, N. Wanderka, Investigation of phases in Al23Co15Cr23Cu8Fe15Ni16 and Al8Co17Cr17Cu8Fe17Ni33 high entropy alloys and comparison with equilibrium phases predicted by Thermo-Calc, Journal of alloys compounds 552 (2013) 430-436. [31] K. Pradeep, N. Wanderka, P. Choi, J. Banhart, B. Murty, D. Raabe, Atomic-scale compositional characterization of a nanocrystalline AlCrCuFeNiZn high-entropy alloy using atom probe tomography, Acta Materialia 61(12) (2013) 4696-4706. [32] X. Yang, S. Chen, J. Cotton, Y. Zhang, Phase stability of low-density, multiprincipal component alloys containing aluminum, magnesium, and lithium, Jom 66(10) (2014) 2009-2020. [33] F. Otto, A. Dlouhý, K.G. Pradeep, M. Kuběnová, D. Raabe, G. Eggeler, E.P. George, Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures, Acta Materialia 112 (2016) 40-52. [34] S. Guo, C. Ng, Z. Wang, C. Liu, Solid solutioning in equiatomic alloys: limit set by topological instability, Journal of alloys compounds 583 (2014) 410-413. [35] Z. Wang, S. Guo, C.T. Liu, Phase selection in high-entropy alloys: from nonequilibrium to equilibrium, Jom 66(10) (2014) 1966-1972. [36] Z. Wu, H. Bei, G.M. Pharr, E.P. George, Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures, Acta Materialia 81 (2014) 428-441. [37] F. Otto, A. Dlouhý, C. Somsen, H. Bei, G. Eggeler, E.P. George, The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy, Acta Materialia 61(15) (2013) 5743-5755. [38] Z. Zhang, M. Mao, J. Wang, B. Gludovatz, Z. Zhang, S.X. Mao, E.P. George, Q. Yu, R.O. Ritchie, Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi, Nature Communications 6(1) (2015) 1-6. [39] N.L. Okamoto, S. Fujimoto, Y. Kambara, M. Kawamura, Z.M. Chen, H. Matsunoshita, K. Tanaka, H. Inui, E.P. George, Size effect, critical resolved shear stress, stacking fault energy, and solid solution strengthening in the CrMnFeCoNi high-entropy alloy, Scientific reports 6 (2016) 35863. [40] C. Slone, S. Chakraborty, J. Miao, E.P. George, M.J. Mills, S. Niezgoda, Influence of deformation induced nanoscale twinning and FCC-HCP transformation on hardening and texture development in medium-entropy CrCoNi alloy, Acta Materialia 158 (2018) 38-52. [41] J. Cahoon, Q. Li, N. Richards, Microstructural and processing factors influencing the formation of annealing twins, Materials Science and Engineering: A 526(1-2) (2009) 56-61. [42] Y. Jin, B. Lin, M. Bernacki, G.S. Rohrer, A. Rollett, N. Bozzolo, Annealing twin development during recrystallization and grain growth in pure nickel, Materials Science and Engineering: A 597 (2014) 295-303. [43] S.-W. Kim, X. Li, H. Gao, S. Kumar, In situ observations of crack arrest and bridging by nanoscale twins in copper thin films, Acta Materialia 60(6-7) (2012) 2959-2972. [44] L. Lu, R. Schwaiger, Z. Shan, M. Dao, K. Lu, S. Suresh, Nano-sized twins induce high rate sensitivity of flow stress in pure copper, Acta Materialia 53(7) (2005) 2169-2179. [45] H. Gleiter, The mechanism of grain boundary migration, Acta metallurgica 17(5) (1969) 565-573. [46] Y.-L. Chu, 單晶相石墨烯製備與特性分析, National Central University, 2014. [47] S. Mahajan, C. Pande, M. Imam, B. Rath, Formation of annealing twins in fcc crystals, Acta Materialia 45(6) (1997) 2633-2638. [48] W.D. Callister, D.G. Rethwisch, Materials science and engineering, John wiley sons NY2011. [49] E. Cerreta, S. Mahajan, Formation of deformation twins in TiAl, Acta Materialia 49(18) (2001) 3803-3809. [50] S. Mahajan, G. Chin, Formation of deformation twins in fcc crystals, Acta metallurgica 21(10) (1973) 1353-1363. [51] K.J. Buschow, R.W. Cahn, M.C. Flemings, B. Ilschner, E.J. Kramer, S. Mahajan, Encyclopedia of materials, Science technology 1 (2001) 11. [52] S. Mahajan, The evolution of intrinsic-extrinsic faulting in fcc crystals, Metallurgical Transactions A 6(10) (1975) 1877. [53] J. Venables, Deformation twinning in face-centred cubic metals, Philosophical magazine 6(63) (1961) 379-396. [54] H. Gleiter, The formation of annealing twins, Acta metallurgica 17(12) (1969) 1421-1428. [55] A. Tyumentsev, N. Surikova, I.Y. Litovchenko, Y.P. Pinzhin, A. Korotaev, O. Lysenko, Mechanism of deformation and crystal lattice reorientation in strain localization bands and deformation twins of the B2 phase of titanium nickelide, Acta Materialia 52(7) (2004) 2067-2074. [56] J.W. Christian, S. Mahajan, Deformation twinning, Progress in materials science 39(1-2) (1995) 1-157. [57] X. Wu, X. Liao, S. Srinivasan, F. Zhou, E. Lavernia, R. Valiev, Y. Zhu, New deformation twinning mechanism generates zero macroscopic strain in nanocrystalline metals, Physical review letters 100(9) (2008) 095701. [58] F.J. Humphreys, M. Hatherly, Recrystallization and related annealing phenomena, Elsevier2012. [59] J. Gubicza, N. Chinh, J. Lábár, Z. Hegedűs, T. Langdon, Twinning and dislocation activity in silver processed by severe plastic deformation, Journal of materials science 44(6) (2009) 1656-1660. [60] M. Chen, E. Ma, K.J. Hemker, H. Sheng, Y. Wang, X. Cheng, Deformation twinning in nanocrystalline aluminum, Science 300(5623) (2003) 1275-1277. [61] X. Liao, Y. Zhao, Y. 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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61361 | - |
dc.description.abstract | CrCoNi中熵合金具有優異的強度和延展性,在低溫環境下強度高達1.3 GPa和超過70%的伸長量,是近幾年熱門的研究材料。然而,根據文獻的研究,中熵合金的降伏強度約300 MPa,容易產生塑性變形,雖可透過晶粒細化的強化方式解決,但會犧牲延展性。因此,本實驗透過冷軋和中低溫退火的方式產生非均勻的部分再結晶結構,觀察不同退火時間的部分再結晶結構差異,及該結構中退火雙晶的發展和相關機械性質。 室溫拉伸結果發現,此方法顯著提高降伏強度(至~1065 MPa),相較文獻提升了三倍,且保持不錯的延展性(總伸長量~15 %)。由於雙晶結構在低溫環境下較容易形成,所以在-50 ℃、-100 ℃、-150 ℃三個溫度下進行低溫拉伸測試,實驗結果發現,隨著溫度降低,強度、延展性、加工硬化率都隨之提升,在 -150 ℃可達到最佳的機械性質 (降伏強度~1326 MPa、抗拉強度~ 1491 MPa、總伸長量34 %)。由穿透式電子顯微鏡進行室溫間斷拉伸試片的微觀結構分析,在塑性變形初期(應變量~2 %),變形機制主要為差排滑移和疊差,隨著變形量增加,在應變量2~6 % 間會啟動雙晶變形機制; 由於 -150 ℃的低溫拉伸試片可以達到較大的變形量(均勻應變量27 %),除了機械雙晶外還觀察到HCP相變。 最後,本實驗進行快速撞擊實驗 (應變速率3000 s-1),和拉伸實驗 (應變速率10-3 s-1)進行顯微結構比較。在TEM影像中,快速撞擊使試片產生密集的機械雙晶,其雙晶寬度較厚,且雙晶間距狹窄,而兩組交錯機械雙晶的角度在拉伸實驗中平均為70°,接近理論值的70.52°; 快速撞擊試片的雙晶交錯角度平均為53°,大幅偏離理論值,產生的HCP相變量也比低溫拉伸更多。上述微結構差異說明快速撞擊使試片變形較嚴重,因此無論在雙晶的密度或是形貌上都與拉伸實驗中的雙晶有較大的差異。 | zh_TW |
dc.description.abstract | CrCoNi Medium-entropy alloy (MEA) is a branch of CrMnFeCoNi high-entropy alloy (HEA). MEA has better mechanical properties than HEA. Most of medium-entropy and high-entropy alloys are limited by the modest yield strength ( ~300 MPa). Although grain refinement method can enhance yield strength, it requires significant compromises to ductility. Therefore, this experiment uses cold-rolling and low-temperature annealing to produce a non-uniform and partially recrystallized microstructure. The mechanical properties and the evolution of annealing twin are examined. The tensile test at room temperature shows that partially recrystallized microstructure significantly enhances the yield strength ( ~1065 MPa) and still remain ductility (~15%). Due to low stacking fault energy at a lower temperature, twin structure is easily formed. Cryogenic tensile tests were performed at -50 ℃, -100 ℃ and -150 ℃. With the decrease in temperature, both strength and ductility increase. In this experiment, the best tensile test condition can be achieved at -150 ℃. The yield strength is ~1326 MPa, tensile strength ~1491 MPa, and total strain 34%. The microstructure of MEA was observed by TEM after tensile test. The deformation mechanisms differed with the strain level. At small strain levels (~ 2%), the deformation substructure mainly consisted of planar dislocation slip and stacking faults. At larger strain levels, additional substructures including deformation twins ( 2 ~ 6%) and a new phase HCP also appeared (strain ~ 27%). To observe the microstructure change under different strain rate, Hopkinson bar test (strain rate 3000 s-1) was performed. From TEM image, there are dense mechanical twins with a thicker width, and forming a narrowly spacing twin strip. The degree of intersectional twins is 53 °, which deviated greatly from the theoretical value 70.52°. The HCP phase transformation of Hopkinson bar test specimen is also more than the tensile test specimen. The difference in microstructure indicates that Hopkinson bar test specimen deformed more seriously. Both twin density and morphology are quite different from those in the tensile experiment. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T13:01:37Z (GMT). No. of bitstreams: 1 U0001-2906202013080800.pdf: 13570471 bytes, checksum: 8afa7941cc1f7f2ac1b54d414b93a0b6 (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 口試委員會審定書 # 誌謝 i 中文摘要 iii ABSTRACT iv CONTENTS vi LIST OF FIGURES ix LIST OF TABLES xvii LIST OF EQUATION xviii Chapter 1 前言 1 Chapter 2 文獻回顧 2 2.1 高熵合金 (High entropy alloy) 2 2.1.1 高熵合金簡介 2 2.1.2 高熵合金定義 3 2.1.3 高熵合金四大效應 4 2.2 中熵合金 (Medium entropy alloy) 6 2.2.1 中熵合金簡介 6 2.2.2 中熵合金之微結構與機械性質 8 2.3 雙晶 12 2.3.1 退火雙晶與機械雙晶介紹 12 2.3.2 雙晶對機械性能的影響 16 2.3.3 粗晶和奈米晶中的機械雙晶 16 Chapter 3 實驗設計及步驟 18 3.1 實驗流程 18 3.1.1 實驗材料 19 3.1.2 軋延及熱處理 20 3.1.3 拉伸實驗 21 3.1.4 快速撞擊實驗 21 3.2 實驗儀器與設備 22 3.2.1 拉伸試驗機 (Tensile Tester) 22 3.2.2 X光繞射分析 (X-ray diffraction analysis, XRD) 22 3.2.3 電子背向散射繞射 (Electron Back Scattered Diffraction, EBSD) 22 3.2.4 穿透式電子顯微鏡 (Transmission Electron Microscope, TEM) 23 Chapter 4 結果與討論 24 4.1 拉伸前微結構分析 24 4.1.1 均質材料及冷軋組織 24 4.1.2 部分再結晶結構 29 4.1.3 退火雙晶的演變 35 4.1.4 硬度 42 4.2 室溫拉伸實驗 43 4.2.1 室溫拉伸之機械性質 43 4.2.2 室溫拉伸之穿透式顯微鏡分析 46 4.3 間斷拉伸實驗 54 4.3.1 間斷拉伸之電子背向散射繞射分析 56 4.3.2 間斷拉伸之穿透式顯微鏡分析 58 4.4 低溫拉伸實驗 65 4.4.1 低溫拉伸之機械性質 65 4.4.2 低溫拉伸之X光繞射儀分析 70 4.4.3 低溫拉伸之電子背向散射繞射分析 71 4.4.4 低溫拉伸之穿透式顯微鏡分析 74 4.5 霍普金森快速撞擊實驗 79 4.5.1 快速撞擊前微結構分析 81 4.5.2 快速撞擊之機械性質 84 4.5.3 快速撞擊之X光繞射儀分析 85 4.5.4 快速撞擊之電子背向散射繞射分析 86 4.5.5 快速撞擊之穿透式顯微鏡分析 88 Chapter 5 結論 97 Chapter 6 未來工作 99 REFERENCE 100 | |
dc.language.iso | zh-TW | |
dc.title | CrCoNi中熵合金異質結構中退火雙晶的演變及相關機械性質研究 | zh_TW |
dc.title | The evolution of annealing twin in CrCoNi medium entropy alloy with heterogeneous microstructure and its mechanical property | en |
dc.type | Thesis | |
dc.date.schoolyear | 108-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 葉均蔚(Jien-Wei Yeh),王星豪(Shing-Hoa Wang),王樂民(LE-MIN WANG),陳志遠(CHIH-YUAN CHEN) | |
dc.subject.keyword | FeCoNiCrMn高熵合金,CrCoNi中熵合金,退火雙晶,機械雙晶,部分再結晶結構,間斷拉伸,低溫拉伸,霍普金森快速撞擊, | zh_TW |
dc.subject.keyword | CrCoNi medium entropy alloy,annealing twin,Cantor alloy,TWIP effect,Partially recrystallized structure,Tensile test,Hopkinson bar test,Interrupted tensile test, | en |
dc.relation.page | 103 | |
dc.identifier.doi | 10.6342/NTU202001184 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2020-06-30 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 材料科學與工程學研究所 | zh_TW |
顯示於系所單位: | 材料科學與工程學系 |
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