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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 潘永寧(Yung-Ning Pan) | |
dc.contributor.author | Shang-Ju Chiang | en |
dc.contributor.author | 江尚儒 | zh_TW |
dc.date.accessioned | 2021-06-15T04:30:00Z | - |
dc.date.available | 2014-08-21 | |
dc.date.copyright | 2009-08-21 | |
dc.date.issued | 2009 | |
dc.date.submitted | 2009-08-19 | |
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Patterson, “Inoculants Can Improve Gray Iron Properties,” Foundry, June, 1972, pp. 68-71. 23 ASM Handbook, Properties and Selection: Irons, Steels, and High-Performance Alloys, 10th ed., ASM International, 1990, p. 33. 24 E. F. Boultbee and G. A. Schofield, Editors, Typical Microstructures of Cast Metals, New Revised Edition, IBF Publications, 1981, pp. 150-151. 25 K. Kocatepe, M. Cerah and M. Erdogan, “Effect of Martensite Volume Fraction and Its Morphology on the Tensile Properties of Ferritic Ductile Iron with Dual Matrix Structures,” Journal of Materials Processing Technology, Vol. 178, 2006, pp. 44-51. 26 D. A. Porter, K. E. Easterling and M. Y. Sherif, Phase Transformations in Metals and Alloys, 3rd ed., Chapman & Hall, 2009, pp. 314-317. 27 S. A. Hackney and G. J. Shiflet, “Pearlite Growth Mechanism,” Acta Metallurgica, Vol. 35, 1987, pp. 1019-1028. 28 E. Dorazil, B. Barta, E. Munsterova, L. Stransky and A. Huvar, “High Strength Bainitic Ductile Cast Iron,” AFS International Cast Metals Journal, Vol. 7, 1982, pp. 52-62. 29 L.C. Chang and H.K.D.H. Bhadeshia, “Metallographic Observations of Bainite Transformation Mechanism,” Materials Science and Technology, Vol. 11, 1995, pp. 105-108. 30 黃振賢,“金屬熱處理”,文京圖書有限公司,1985,pp. 70-74。 31 D. A. Porter, K. E. Easterling and M. Y. Sherif, Phase Transformations in Metals and Alloys, 3rd ed., Chapman & Hall, 2009, pp. 320-322. 32 William D. Callister, Jr., Materials Science and Engineering, 2nd ed., John Wiley & Sons, Inc., 2004, pp. 438-439. 33 M. Atkins, Atlas of Continuous Cooling Transformation Diagrams for Engineering Steels, American Society for Metals, 1980, p. 37. 34 M. Atkins, Atlas of Continuous Cooling Transformation Diagrams for Engineering Steels, American Society for Metals, 1980, p. 137. 35 J. S. Marsh, Alloys of Iron and Nickel, McGraw Hill, New York, 1938, p. 593. 36 M. M. Shea, “Influence of Cooling Rate and Manganese and Copper Content on Hardness of As-Cast Ductile Iron,” AFS Transactions, Vol. 78, 1970, pp. 7-12. 37 L. A. Neumeier and B. A. Betts, “Tin and Copper Combinations in As-Cast Ductile Iron,” AFS Transactions, Vol. 82, 1974, pp. 131-138. 38 V. I. Litovka and V. A. Reznik, “Effect of Chemical Composition on the Hardenability of High-strength Cast Iron,” Metal Science and Heat Treatment, Vol. 29, 1987, pp. 410-412. 39 S. K. Yu and C. R. Loper, Jr., “The Effect of Molybdenum, Copper, and Nickel on the Pearlite and Martensitic Hardenability of Ductile Cast Irons,” AFS Transactions, Vol. 96, 1988, pp. 811-822. 40 R. Barton, “The Influence of Alloying Elements in Cast Iron,” BCIRA Journal, Vol. 8, 1960, pp. 567-580. 41 W. C. Johnson and B. V. Kovacs, “Effect of Additives on the Eutectoid Transformation of Ductile Iron,” Metallurgical Transactions A, Vol. 9A, 1978, pp. 219-229. 42 M. Gagné, “The Combined Effect of Manganese and Chromium on the Microstructure of Ductile Iron Castings,” AFS Transactions, Vol. 92, 1984, pp. 387-393. 43 R. A. Flinn, M. Cohan and J. Chipman, “The Acicular Structure in Nickel- Molybdenum Cast Irons,” Transactions, American Society for Metals, Vol. 30, 1942, pp. 1255-1283. 44 A. M. Hall, Nickel in Iron and Steel, John Wiley & Sons, Inc., 1954, pp. 401-405. 45 C. R. Loper, Jr., A. Javaid and E. N. Pan, “Graphite Morphology Control in Heavy Section Ductile Cast Iron,” K. D. Millis Symposium on Ductile Iron, The Ductile Iron Society, USA, Oct., 1993, pp. 19-22. 46 K. H. W. Seah, J. Hemanth, S. C. Sharma, K.V.S. Rao, “Solidification Behavior of Water-Cooled and Subzero Chilled Cast Iron,” Journal of Alloys and Compounds, Vol. 290, 1999, pp. 172-180. 47 J. Hemanth, “Wear Characteristics of Austempered Chilled Ductile Iron,” Materials and Design. Vol. 21, 2000, pp. 139-148. 48 B. A. Ceccarelli, R. C. Dommarco, R. A. Martínez, M. R. Martínez Gamba, “Abrasion and Impact Properties of Partially Chilled Ductile Iron”, Wear, Vol. 256, 2004, pp. 49-55. 49 N. E. Dowling, Mechanical Behavior of Materials-Engineering Methods for Deformation, Fracture and Fatigue, 2nd ed., Prentice Hall, Upper Saddle River, New Jersey, 1998, pp. 145-147. 50 G. M. Enos and W. E. Fontaine, Elements of Heat Treatment, John Wiley & Sons, Inc., 1953, p. 178. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/45606 | - |
dc.description.abstract | 本研究的主要目的在於探討不同C與Si含量、接種處理及表面冷激對於低合金球墨鑄鐵之顯微組織(石墨形態、碳化物含量、基地組織)及硬度之影響。在合金設計方面,固定2.5%Ni-1.0%Cr-0.5Mo-0.4Mn,探討C與Si含量(A:3.76%C- 1.15%Si,B:3.55%C-1.68%Si,C:3.44%C-1.48%Si,D:3.81%C-1.44%Si,其中A與B爐次之碳當量相同),與接種情形對於鑄件顯微組織及硬度的影響。
在碳當量相同之條件下,增加Si含量會明顯增加石墨數目並減少碳化物的生成,而BX鑄件及BY鑄件在顯微組織(石墨形態、碳化物含量、基地組織)上的差異比AX與AY兩鑄件之間差異要大,可看出二次接種的效果在Si含量高時較為明顯。另,在Si含量相同之情形下,DY鑄件因碳含量較高又施以二次接種,故有較多的球墨數目及較低的碳化物量,但碳化物在四個鑄件之間差異不大。又,二次接種使鑄件表面與鑄件內部之變韌鐵/波來鐵比例差異極大,無二次接種的鑄件之變韌鐵/波來鐵比例在各位置之間差異較小。四個鑄件之硬度值以AX為最高,其值介於HRC50~HRC54之間。另,成份對基地組織各相所佔比例之影響極大。在冷卻條件不同的情形下,冷激鐵放置處之表面具有最高的球墨數目,碳化物含量高且分佈較細密,其硬度值亦最高;在冷卻較慢的部份(鑄件內部),其球墨數目較少且其尺寸較大,碳化物之分佈也較分散。 本研究亦針對一些特定位置進行熱分析,並將所獲得之冷卻曲線對照相近成份之連續冷卻變態圖,來預測鑄件之基地組織。分析結果與實驗觀察結果頗為吻合。 | zh_TW |
dc.description.abstract | The primary purpose of this research is to study the effects of C and Si contents, method of post inoculation and the employment of chills on the (surface) microstructure and hardness of low-alloy ductile cast irons.
The results show that, at a fixed CE, increasing Si content (from 1.15%Si to 1.68%Si) increases nodule count, but reduces carbide content. In addition, late inoculation exerts more effect on irons with higher Si than with lower Si. On the other hand, at a fixed Si content, irons with a higher C content and/or were late inoculated, have higher nodule count and less carbide content. In addition, late inoculation promotes bainite formation rather than pearlite, while no significant difference in matrix structure was obtained for irons without late inoculation. Regarding the hardness, casting AX has the highest hardness value HRC 50-54, among the four castings studied. Surface chilling significantly increases the nodule count, promotes uniform distribution of carbides and also refines carbide phase, and increases hardness. Finally, thermal analyses were performed to attain the cooling curves at different locations in the castings and correlated the cooling curves with the continuous cooling transformation diagram of similar compositions to predict the matrix structure formed. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T04:30:00Z (GMT). No. of bitstreams: 1 ntu-98-R96522732-1.pdf: 6554350 bytes, checksum: 480d95e87488a38691ac6168cef5d335 (MD5) Previous issue date: 2009 | en |
dc.description.tableofcontents | 口試委員會審定書 i
誌謝 ii 中文摘要 iii 英文摘要 iv 目錄 v 表目錄 vii 圖目錄 viii 第一章 緒論 1 1.1 前言 1 1.2 研究目的 1 第二章 文獻回顧 3 2.1 鑄鐵之凝固現象 3 2.1.1 穩定與准穩定系統 3 2.1.2 石墨之形成 3 2.1.3 白口化現象與碳化物生成 4 2.1.4 合金元素對共晶反應之影響 5 2.2 鑄鐵之共析反應 6 2.2.1 肥粒鐵與波來鐵 6 2.2.2 變韌鐵 7 2.2.3 麻田散鐵 7 2.2.4 合金元素對共析變態之影響 8 2.3 冷激鑄鐵 8 第三章 實驗方法與步驟 21 3.1 實驗目的 21 3.2 實驗設計與實驗程序 21 3.2.1 模型 21 3.2.2 實驗參數設計 21 3.2.3 造模與熔鑄作業 21 3.2.4 冷卻曲線量測 22 3.3 分析與測試 22 3.3.1 顯微組織分析 22 3.3.2 硬度測試 22 第四章 結果與討論 33 4.1 Si含量與二次接種之影響 33 4.1.1 石墨型態 33 4.1.2 碳化物 34 4.1.3 基地組織 35 4.1.4 硬度值 35 4.1.5 小結 36 4.2 C含量與二次接種之影響 69 4.1.1 石墨型態 69 4.1.2 碳化物 70 4.1.3 基地組織 70 4.1.4 硬度值 71 4.1.5 小結 71 4.3 冷卻曲線分析 100 第五章 結論 104 參 考 文 獻 105 | |
dc.language.iso | zh-TW | |
dc.title | 冷激型低合金球墨鑄鐵之顯微組織探討 | zh_TW |
dc.title | Study on the Microstructure of Low-Alloy Chilled Ductile Cast Iron | en |
dc.type | Thesis | |
dc.date.schoolyear | 97-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 許正勳,楊榮顯 | |
dc.subject.keyword | 冷激,低合金球墨鑄鐵,顯微組織,硬度,連續冷卻變態圖, | zh_TW |
dc.subject.keyword | Chill,Low-alloy ductile cast iron,Microstructure,Hardness,Continuous cooling transformation diagram, | en |
dc.relation.page | 109 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2009-08-20 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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