| The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys |
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| 作者姓名： | JING Rui-rui LIU Fu-shun |
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| 作者单位： | JING Rui-rui，LIU Fu-shun School of Materials Science and Engineering，Beijing University of Aeronautics and Astronautics，Beijing 100083，China |
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| 基金项目： | National Defence Pre-research Foundation |
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| 摘 要： | The influences of Co-addition on phase transformation behavior and mechanical properties of TiNi alloys were investigated. Re- sults indicate that, as a substitute for Ni, Co added to TiNi alloys can dramatically decrease the martensite transformation temperature, and R phase transformation and martensite transformation are accordingly separated. When Co-content reach 10 at.%, the martensite transformation temperature is lower than that of liquid nitrogen. During deformation at room temperature, Ti50Ni48Co2 alloy exhibits good ductility with a lower stress plateau caused by stress-induced martensite and martensite reorientation.
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| 关 键 词： | 形状记忆合金 马氏本形变 机械性能 钛铌钴 |
| 收稿时间： | 10 August 2006 |
| 修稿时间： | 2006-08-102006-11-06 |
The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys |
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| JING Rui-rui LIU Fu-shun.The Influence of Co Addition on Phase Transformation Behavior and Mechanical Properties of TiNi Alloys[J].Chinese Journal of Aeronautics,2007,20(2):153-156. |
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| Authors: | JING Rui-rui LIU Fu-shun |
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| Institution: | School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | The influences of Co-addition on phase transformation behavior and mechanical properties of TiNi alloys were investigated. Results indicate that, as a substitute for Ni, Co added to TiNi alloys can dramatically decrease the martensite transformation temperature,and R phase transformation and martensite transformation are accordingly separated. When Co-content reach 10 at.%, the martensite transformation temperature is lower than that of liquid nitrogen. During deformation at room temperature, Ti50Ni48Co2 alloy exhibits good ductility with a lower stress plateau caused by stress-induced martensite and martensite reorientation. |
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| Keywords: | TiNiCo shape memory alloy martensite transformation mechanical property |
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