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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/79560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 | Yu-Yung Ting | en |
| dc.contributor.author | 丁宥允 | zh_TW |
| dc.date.accessioned | 2022-11-23T09:03:43Z | - |
| dc.date.available | 2021-11-08 | |
| dc.date.available | 2022-11-23T09:03:43Z | - |
| dc.date.copyright | 2021-11-08 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-09-23 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/79560 | - |
| dc.description.abstract | "本研究利用快速凝固製程(RSP)製作出TiNiCu形狀記憶合金箔帶，並針對其麻田散體相變態行為、顯微結構、形狀記憶效應、以及超彈性進行探討。本研究發現400℃以及500℃的時效條件對Ti50.5Ni44.5Cu5箔帶的相變態溫度影響不大，確認是因為基底成分與噴鑄狀態(as-spun)相同所致。而Ti50.5Ni44.5Cu5箔帶經800℃時效24小時後則因為Ti2(Ni,Cu)以及Ti2(Ni,Cu)3的析出，造成基底成分變化，使得相變態峰值溫度下降。此外，as-spun Ti50.5Ni44.5Cu5箔帶熱循環至1500次後，麻田散體相變態峰值溫度及麻田散體逆變態峰值溫度分別僅下降1.9℃及2.1℃，顯示出良好熱穩定性。在形狀記憶效應實驗中，於170MPa之應力下觀察到as-spun Ti50.5Ni44.5Cu5箔帶具有4.7%之可回復應變，不可回復應變小於0.11%；Ti50.5Ni44.5Cu5箔帶經400℃、500℃時效1小時後則分別有5.1%、5.0%之可回復應變，不可回復應變小於0.11%；800℃時效24小時之Ti50.5Ni44.5Cu5箔帶具有4.7%之可回復應變，不可回復應變約0.17%，從實驗結果可知，Ti50.5Ni44.5Cu5箔帶之可回復應變、不可回復應變會跟材料潛熱以及析出物的狀態有關。從超彈性結果來看，as-spun Ti50.5Ni44.5Cu5箔帶具有4.5%之超彈性，最大彈熱效應的溫度變化量來到10.3℃，而800℃時效24小時後Ti50.5Ni44.5Cu5箔帶在拉伸實驗中僅量測到1%之應變量。經分析結果顯示800℃時效24小時之Ti50.5Ni44.5Cu5箔帶因為太脆而在產生麻田散體變態之前斷裂所致。As-spun Ti50.5Ni44.5Cu5箔帶在經過2%與4%超彈性循環後，試片分別於201、91次循環後破壞，且因4%超彈性循環所累積之差排較多，造成功能性降級較大。最後本研究選用as-spun Ti50.9Ni48.2Si0.2與Ti50.5Ni44.5Cu5箔帶進行超彈性比較。Ti50.9Ni48.2Si0.2箔帶同樣有4.5%之超彈性，最大彈熱效應的溫度變化量為11.3℃。此外，Ti50.9Ni48.2Si0.2箔帶在經過4%超彈性循環後，Ti50.9Ni48.2Si0.2箔帶因為厚度分布較不均，使疲勞壽命較差，但因Ti50.9Ni48.2Si0.2箔帶晶粒尺寸較小，具有細晶強化效果，所產生的功能性降級幅度較小。不同溫度下之超彈性測試顯示Ti50.9Ni48.2Si0.2箔帶可在40~55℃溫度範圍內展現2%超彈性性能；Ti50.5Ni44.5Cu5箔帶可在69~94℃溫度範圍內具有3%超彈性性能。此外，也針對箔帶於不同溫度下之彈熱效應進行量測，並計算出材料性能係數作為固態冷媒選用之依據。" | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-23T09:03:43Z (GMT). No. of bitstreams: 1 U0001-2009202115203400.pdf: 25945908 bytes, checksum: 6dbea635d3af391eb2998e6807f149b6 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 論文口試委員審定書 i 致謝 iii 摘要 iv Abstract v 目錄 vii 第一章 前言 1 第二章 文獻探討 2 2-1 形狀記憶合金簡介 2 2-2 熱彈型麻田散體相變態 2 2-3 麻田散體相變態溫度 4 2-4 形狀記憶效應和超彈性 5 2-5 TiNiCu形狀記憶合金 7 2-6快速凝固製程 8 2-7形狀記憶合金疲勞之特性 10 2-8彈熱效應 11 第三章 實驗設備與方法 32 3-1塊狀Ti50.5Ni44.5Cu5合金之配置及熔煉 32 3-2 RSP製備之TiNiCu合金箔帶 32 3-3 Ti50.5Ni44.5Cu5合金箔帶之時效處理 33 3-4 DSC實驗 33 3-5 熱循環實驗 34 3-6 形狀記憶效應實驗 34 3-7 SEM成分分析 34 3-8 XRD晶體結構分析 35 3-9 拉伸超彈性實驗 35 3-10 彈熱效應量測 36 第四章 Ti50.5Ni44.5Cu5與Ti50.9Ni48.2Si0.2合金箔帶實驗結果 44 4-1 Ti50.5Ni44.5Cu5合金箔帶 44 4-1-1 As-spun與時效箔帶之DSC實驗結果 44 4-1-2 As-spun與時效箔帶微結構與成份分析之實驗結果 45 4-1-3 As-spun與時效箔帶之熱循環實驗結果 47 4-1-4 As-spun與時效箔帶之形狀記憶效應結果 48 4-1-5 As-spun與時效箔帶拉伸實驗、彈熱效應之結果 49 4-1-6 As-spun箔帶應力應變循環與彈熱效應之結果 51 4-2 As-spun Ti50.9Ni48.2Si0.2與Ti50.5Ni44.5Cu5箔帶之拉伸超彈性性能比較 53 4-2-1 As-spun Ti50.9Ni49.8Si0.2與Ti50.5Ni44.5Cu5箔帶拉伸實驗之結果 53 4-2-2 As-spun Ti50.9Ni49.8Si0.2與Ti50.5Ni44.5Cu5箔帶之應力應變循環與彈熱效應之結果 55 4-2-3 As-spun Ti50.9Ni49.8Si0.2與Ti50.5Ni44.5Cu5箔帶於不同測試溫度下之超彈性與彈熱效應結果 57 第五章 結論與未來展望 99 5-1 結論 99 5-2 未來展望 100 參考文獻 101 | |
| dc.language.iso | zh-TW | |
| dc.title | Ti51.6Ni43.3Cu4.9Si0.2形狀記憶合金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 Behavior and Mechanical Properties of Ti51.6Ni43.3Cu4.9Si0.2 Shape Memory Alloy | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 鄒年棣(Hsin-Tsai Liu),曾立維(Chih-Yang Tseng) | |
| dc.subject.keyword | 形狀記憶合金箔帶,麻田散體相變態,超彈性,彈熱效應, | zh_TW |
| dc.subject.keyword | Shape memory ribbon,Martensitic transformation,Superelasticity,Elastocaloric effect, | en |
| dc.relation.page | 105 | |
| dc.identifier.doi | 10.6342/NTU202103258 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2021-09-23 | |
| 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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