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系統識別號 U0026-3107201017275400
論文名稱(中文) 熱處理對鑄造合金Ti-7.5Mo機械性質的影響
論文名稱(英文) Effect of heat treatment on mechanical properties of cast Ti-7.5Mo alloy
校院名稱 成功大學
系所名稱(中) 材料科學及工程學系碩博士班
系所名稱(英) Department of Materials Science and Engineering
學年度 98
學期 2
出版年 99
研究生(中文) 楊士德
研究生(英文) Shih-Te Yang
學號 n5697123
學位類別 碩士
語文別 中文
論文頁數 91頁
口試委員 指導教授-陳瑾惠
共同指導教授-朱建平
口試委員-李智銘
口試委員-林殿傑
口試委員-林家緯
中文關鍵字     熱處理 
英文關鍵字 titanium  molybdenum  thermo-treatment 
學科別分類
中文摘要 本實驗探討不同熱處理對鑄造合金Ti-7.5Mo所造成的性質影響。本實驗將分為兩部分討論,一方面固定時效溫度,改變時效溫度;另一方面固定時效時間,改變時效溫度。時效溫度的選取有T1℃、T2℃、T3℃,時效時間為t1、t2、t3、t4,固定時效方面固定時間為t2,改變時效溫度分別為T1℃、T4℃、T2℃、T5℃、T3℃和T6℃。實驗結果以時效時間T2℃、時效時間t2可以得到最佳的機械性質,降伏強度927MPa和延12%。
對生醫植入材而言,為了避免應力遮蔽效應,低彈性模數是被要求的,本實驗得到最低彈性模數為直接鑄造;彈性模數為86GPa,而最高彈性模數為鑄造後直接時效,時效條件為溫度T1℃、時間t6,其值可達到132GPa,中間差距為46GPa,差距變化為最低彈性模數的約53.5%。
英文摘要 The effect of heat treatment on the properties of as-cast alloy Ti-7.5Mo discussed in this study. Two sets of experiment were carried out in terms of aging temperature and aging time. First, three aging temperatures(T1℃、T2℃、T3℃)were tested , each with four aging times(t1、t2、t3、t4). Second, an aging time of 30mins was tested with 6 aging temperatures(T1℃、T4℃、T2℃、T5℃、T3℃、T6℃).It was found that the condition of aging temperature at T2℃ for t2 gave the best mechanical properties with yielding strength 927MPa and elongation 12%.
For bio-implant applications, low modulus is desirable for avoiding stress shielding effect, in this study, the as-cast Ti-7.5Mo alloy has the lowest modulus than other heat treatment condition, which value is 86GPa, and aging temperature at T1℃ for t6 has the highest one, the value is 132GPa, the difference of the value is 53.5% of the lowest one.
論文目次 熱處理對鑄造合金Ti-7.5Mo機械性質的影響
總目錄
第一章 前言........................................1
1-1研究背景.......................................1
1-2生醫材料概論...................................1
1-3生醫材料的分類..................................2
1-3-1金屬生醫材料................................2
1-3-2高分子生醫材料..............................3
1-3-3陶瓷生醫材料................................3
1-3-4生醫複合材料................................4
1-4研究目的........................................6
第二章 文獻回顧 ....................................8
2-1金屬生醫材料的發展...............................8
2-1-1不銹鋼(Stainless steel)..........................8
2-1-2鈷基合金(Cobalt-base alloy).....................10
2-1-3鈦合金(Ti-alloy)..............................10
2-2鈦的發展 ......................................11
2-3純鈦的性質 ....................................13
2-4純鈦及鈦合金之類別與應用..........................16
2-4-1 α型或near α型鈦合金........................18
2-4-2 β型鈦合金.................................22
2-4-3 α+β型鈦合金................................25
2-5 Mo當量.......................................25
2-6鈦合金的非平衡相................................26
2-7 α相的析出......................................30
2-8應力遮蔽效應 ..................................30
2-9 Ti-Mo合金的發展.................................31
第三章 理論基礎....................................34
3-1熱處理.........................................34
3-1-1固溶處理(Solution Treatment).....................34
3-1-2淬火(Quench)...............................34
3-1-3時效處理(Aging) ... ..........................35
3-2析出硬化(Precipitation Hardening) ......................37
3-2-1析出硬化的條件..............................37
3-2-2析出硬化機構...............................38
3-2-2-1整合性應變硬化(Coherent strain hardening)...........38
3-2-2-2化學硬化(Chemical hardening).....................39
3-2-2-3 Orowan散布硬化(Orowan mechanism)..............40
3-3破斷機構(Fracture Mechanism).........................42
3-3-1延性破斷(Ductile Fracture)......................42
3-3-2脆性破斷(Brittle Fracture)....................... 44
第四章 實驗步驟與方法...............................45
4-1實驗流程.......................................45
4-2合金材料及製備..................................46
4-3合金熔煉.......................................47
4-4合金鑄造.......................................50
4-5試片製作.......................................51
4-6固溶處理.......................................51
4-7時效處理.......................................52
4-8拉伸測試.......................................52
4-9掃描式電子顯微鏡(Scanning Electron Microscope, SEM) ......54
4-10 X光繞射(X-Ray Diffraction,XRD)相分析..............54
4-11光學顯微鏡(Optical Microscope, OM).................. 55
4-12微硬度測試....................................55
第五章 結果與討論...................................57
5-1 XRD相組成分析.................................57
5-2金相組織分析....................................62
5-3拉伸機械性質....................................68
5-3-1一次時效拉伸機械性質........................68
5-3-2經固溶後時效拉伸機械性質.....................73
5-3-3鑄造後直接一次時效與二次時效拉伸機械性質.......74
5-4拉伸破斷面觀察..................................76
5-5微硬度分析.......................................83
第六章 總結論......................................87
第七章 參考文獻....................................89
參考文獻 A書籍:
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B論文期刊:
1. 何文福, 鑄造鈦-鉬合金之結構及性質研究,成功大學材料工程研究所博士論文,1999.
2. 簡嘉毅,鈦-鉬合金熱處理後拉伸疲勞性質研究,成功大學材料工程研究所碩士論文,2005.
3. 林群堡,熱處理對鈦-鉬合金機械性質的影響,成功大學材料工程研究所碩士論文,2006.
4. 蔡天成,鉍的添加對Ti-15Mo合金性質的影響,成功大學材料工程研究所碩士論文,2007.
5. 蔡翔威,鈦-鉬合金在漢克溶液中的腐蝕疲勞行為研究,成功大學材料工程研究所碩士論文,2007.
6. 林士哲,熱機處理對鈦-鉬合金機械性質的影響,成功大學材料工程研究所碩士論文,2009.
7. 林家緯,鑄造鈦-鉬合金疲勞性質研究,成功大學材料工程研究所博士論文,2005.
8.陳原逢,牙科用鈦合金鑄造與腐蝕性質之探討,成功大學礦冶及材料科學研究所,1999.
C網頁資料及其他:
1. 鈦材料熱處理http://baike.sososteel.com/doc/view/44833.html
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