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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/86654完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳志軒(Chih-Hsuan Chen) | |
| dc.contributor.author | Wei-Jen Su | en |
| dc.contributor.author | 蘇唯仁 | zh_TW |
| dc.date.accessioned | 2023-03-20T00:09:13Z | - |
| dc.date.copyright | 2022-08-18 | |
| dc.date.issued | 2022 | |
| dc.date.submitted | 2022-08-04 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/86654 | - |
| dc.description.abstract | 本研究利用快速凝固製程(RSP)製備Ti50Ni15Pd25Cu10 與Ti48.9Ni49.1Fe2形狀記憶合金箔帶，並針對其麻田散體相變態行為、微結構、形狀記憶效應、超彈性以及彈熱效應進行探討。本研究結果顯示，400°C、500°C的時效條件會對於Ti48.9Ni49.1Fe2箔帶的相變態溫度有提升的效果，說明熱處理對於Ti48.9Ni49.1Fe2箔帶基地成分以及顯微結構產生影響，並影響其機械性質，但對於熱循環穩定性的影響並不顯著，因為B2相與R相間的晶格相容性很好，本來就有良好的熱循環穩定性。結果也顯示出，400°C、500°C的時效條件會使Ti50Ni15Pd25Cu10箔帶長出Ti2Pd析出物，對基地成分造成影響，進而使相變態溫度降低，結果也顯示Ti50Ni15Pd25Cu10箔帶經過時效後產生Ti2Pd析出物隊熱循環穩定性有提升的效果。研究發現箔帶因為製程而具有厚度不均的問題，造成應變分布不均，進而影響其機械性質，為了使箔帶機械性質獲得改善，對箔帶嘗試利用冷加工方式來改善厚度均勻性，比較冷加工前後箔帶之形狀記憶特性以及機械性質。結果顯示，箔帶經過冷加工後其厚度的均勻度獲得提升，使應變在箔帶各處較為均勻，並可以進一步的提升其各項功能性表現，包含形狀記憶效應、超彈性以及彈熱性能。 | zh_TW |
| dc.description.abstract | This study investigated the phase transformation behavior, microstructure, shape memory effect, superelasticity, and elastocaloric effect of Ti50Ni15Pd25Cu10 and Ti48.9Ni49.1Fe2 shape memory ribbons, which were fabricated by rapid solidification process (RSP). Experimental results showed that the aging conditions of 400 °C and 500 °C increased the phase transformation temperatures of Ti48.9Ni49.1Fe2 ribbon, indicating that heat treatment had an impact on the matrix composition and microstructure of Ti48.9Ni49.1Fe2 ribbon, which in turn affected the mechanical properties. Besides, the effect of aging treatment on thermal cycling stability was not significant for the Ti48.9Ni49.1Fe2 ribbon due to the interfacial compatability was already excellent for the B2 to R-phase trasnformation. For the Ti50Ni15Pd25Cu10 ribbon, the aging conditions of 400 °C and 500 °C reduced the phase transformation temperatures due to the formation of Ti2Pd precipitates. Furthermore, the thermal cycle stability was improved by the formation of Ti2Pd. It was found that the thickness of the ribbons was uneven due to the RSP process, resulting in uneven strain distribution, which in turn affected its mechanical properties. In order to improve the mechanical properties of the ribbons, cold rolling was applied to improve the thickness homogeneity. The cold-rolled ribbons showed better shape memory characteristics due to less stress concentration, and thus the martensitic transformation was more uniform throughout the ribbon. With the additional cold-rolling process, the functional performance of shape memory ribbons, including shape memory effect, superelasticity, and elastocaloric effect, could be further improved. | en |
| dc.description.provenance | Made available in DSpace on 2023-03-20T00:09:13Z (GMT). No. of bitstreams: 1 U0001-0408202200392000.pdf: 10884213 bytes, checksum: 2f9026e430839cda647fc6ed0122a448 (MD5) Previous issue date: 2022 | en |
| dc.description.tableofcontents | 口試委員審定書 i 誌謝 ii 摘要 iii Abstract iv 目錄 v 圖目錄 viii 表目錄 xii 第一章 前言 1 第二章 文獻探討 3 2-1 形狀記憶合金簡介 3 2-2 形狀記憶特性 4 2-2-1麻田散體相變態 4 2-2-2麻田散體相變態溫度 6 2-2-3形狀記憶效應 9 2-3 超彈性 12 2-4 彈熱效應 17 2-5 Ti-Ni基形狀記憶合金 17 2-5-1 Ti-Ni形狀記憶合金 17 2-5-2 Ti-Ni-Cu形狀記憶合金 19 2-5-3 Ti-Ni-Pd形狀記憶合金 21 2-5-4 Ti-Ni-Pd-Cu形狀記憶合金 21 2-5-5 Ti-Ni-Fe形狀記憶合金 22 2-6 快速凝固製程 23 第三章 實驗設備與方法 26 3-1合金熔煉以及配置 27 3-2 RSP製備之箔帶 28 3-3箔帶冷加工 29 3-4箔帶之時效處理 29 3-5 DSC實驗 30 3-5-1相變態溫度量測 30 3-5-2比熱量測 31 3-6掃描式電子顯微鏡觀察 31 3-7 XRD晶體結構分析 32 3-8拉伸超彈性實驗 33 3-9彈熱效應實驗 35 第四章 實驗結果與討論 36 4-1 Ti48.9Ni49.1Fe2箔帶之研究結果 36 4-1-1時效箔帶DSC實驗 36 4-1-2 As-spun箔帶XRD實驗 40 4-1-3比熱量測實驗 40 4-1-4時效箔帶微結構實驗 42 4-1-5時效箔帶熱循環穩定性實驗 45 4-1-6時效箔帶拉伸試驗 48 4-1-7 冷滾10%箔帶厚度分布 53 4-1-8 冷滾時效箔帶拉伸試驗 54 4-1-9時效箔帶形狀記憶效應 61 4-2 Ti50Ni15Pd25Cu10合金箔帶實驗結果 76 4-2-1 As-spun與時效箔帶DSC實驗 76 4-2-2 As-spun箔帶XRD量測實驗 80 4-2-3箔帶比熱量測實驗 80 4-2-4時效箔帶微結構實驗 82 4-2-5時效箔帶XRD量測實驗 83 4-2-6箔帶熱循環穩定性實驗 84 4-2-7箔帶形狀記憶效應 89 4-2-8箔帶拉伸試驗 100 4-2-9不同加工量箔帶之厚度分布 104 4-2-10 冷滾箔帶拉伸試驗 106 4-2-11箔帶超彈性循環 113 4-2-12箔帶彈熱效應 114 第五章 結論 118 第六章 參考文獻 120 | |
| dc.language.iso | zh-TW | |
| dc.subject | 超彈性 | zh_TW |
| dc.subject | 形狀記憶效應 | zh_TW |
| dc.subject | 冷加工 | zh_TW |
| dc.subject | 形狀記憶合金箔帶 | zh_TW |
| dc.subject | 超彈性 | zh_TW |
| dc.subject | 彈熱效應 | zh_TW |
| dc.subject | 形狀記憶效應 | zh_TW |
| dc.subject | 冷加工 | zh_TW |
| dc.subject | 形狀記憶合金箔帶 | zh_TW |
| dc.subject | 彈熱效應 | zh_TW |
| dc.subject | cold roll | en |
| dc.subject | shape memory ribbon | en |
| dc.subject | shape memory effect | en |
| dc.subject | superelasticity | en |
| dc.subject | elastocaloric effect | en |
| dc.subject | shape memory ribbon | en |
| dc.subject | cold roll | en |
| dc.subject | shape memory effect | en |
| dc.subject | superelasticity | en |
| dc.subject | elastocaloric effect | en |
| dc.title | Ti50Ni15Pd25Cu10與Ti48.9Ni49.1Fe2形狀記憶合金箔帶之麻田散體相變態行為與機械性質之研究 | zh_TW |
| dc.title | Research on Martensitic Transformation Behaviors and Mechanical Properties of Ti50Ni15Pd25Cu10 and Ti48.9Ni49.1Fe2 Shape Memory Alloy Ribbons | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 110-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林新智(Sin-Jhih Lin),陳建彰(Jian-Zhang Chen) | |
| dc.subject.keyword | 形狀記憶合金箔帶,冷加工,形狀記憶效應,超彈性,彈熱效應, | zh_TW |
| dc.subject.keyword | shape memory ribbon,cold roll,shape memory effect,superelasticity,elastocaloric effect, | en |
| dc.relation.page | 126 | |
| dc.identifier.doi | 10.6342/NTU202202037 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2022-08-04 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| dc.date.embargo-lift | 2022-08-18 | - |
| 顯示於系所單位： | 機械工程學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| U0001-0408202200392000.pdf | 10.63 MB | Adobe PDF | 檢視/開啟 |
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