| 时效对TiNiCr形状记忆合金马氏体相变与超弹性的影响(英文) |
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| 引用本文： | 佟运祥,刘珺婷,陈枫,梁楚锜,田兵,李莉,郑玉峰. 时效对TiNiCr形状记忆合金马氏体相变与超弹性的影响(英文)[J]. 中国有色金属学会会刊, 2014, 24(8): 2598-2605. DOI: 10.1016/S1003-6326(14)63388-4 |
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| 作者姓名： | 佟运祥 刘珺婷 陈枫 梁楚锜 田兵 李莉 郑玉峰 |
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| 作者单位： | 哈尔滨工程大学生物医学材料与工程研究中心;北京大学工学院材料科学与工程系; |
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| 基金项目： | Project(51001035)supported by the National Natural Science Foundation of China;Project(ZD201012)supported by the Natural Science Foundation of Heilongjiang Province,China;Project(HEUCF201403012)supported by the Fundamental Research Funds for the Central Universities,China;Projects(20110491027,2012T50307)supported by the China Postdoctoral Science Foundation |
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| 摘 要： | 通过X射线衍射分析(XRD)、透射电子显微观察(TEM)、差式扫描量热分析(DSC)与拉伸实验研究时效处理对Ti48.4Ni51.1Cr0.5合金显微组织、马氏体相变与超弹性的影响规律与机制。经400°C时效处理30 min后,合金中形成Ti3Ni4析出相。当时效温度介于400°C和500°C之间时,合金表现出两步马氏体相变。经时效处理的Ti48.4Ni51.1Cr0.5合金在室温下表现出优异的超弹性。随时效温度自300°C升高到450°C,超弹性恢复率增加。继续升高时效温度,恢复率下降。超弹性应力滞后表现出相反的变化趋势。通过分析Ti3Ni4析出相随时效处理的演化规律解释了时效处理与马氏体相变和超弹性之间的关系。
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| 关 键 词： | TiNiCr 形状记忆合金 Ti3Ni4析出相 马氏体相变 超弹性 时效 |
| 收稿时间： | 2013-07-29 |
Effect of aging on martensitic transformation and superelasticity of TiNiCr shape memory alloy |
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| Yun-xiang TONG;Jun-ting LIU;Feng CHEN;Chu-qi LIANG;Bing TIAN;Li LI;Yu-feng ZHENG. Effect of aging on martensitic transformation and superelasticity of TiNiCr shape memory alloy[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(8): 2598-2605. DOI: 10.1016/S1003-6326(14)63388-4 |
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| Authors: | Yun-xiang TONG Jun-ting LIU Feng CHEN Chu-qi LIANG Bing TIAN Li LI Yu-feng ZHENG |
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| Affiliation: | Yun-xiang TONG;Jun-ting LIU;Feng CHEN;Chu-qi LIANG;Bing TIAN;Li LI;Yu-feng ZHENG;Center for Biomedical Materials and Engineering, Harbin Engineering University;Department of Materials Science and Engineering, College of Engineering, Peking University; |
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| Abstract: | The effect of aging on microstructure, martensitic transformation and superelasticity of a Ti48.4Ni51.1Cr0.5 alloy was investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC) analysis and tensile tests. When the alloy was aged at 400 °C for 30 min, Ti3Ni4 precipitate appears. When aged at a temperature between 400 °C and 500 °C, the samples show a two-stage martensitic transformation. The aged Ti48.4Ni51.1Cr0.5 alloy exhibits a well-defined superelasticity at room temperature. The recovery ratio increases with increasing aging temperature from 300 to 450 °C. Further increase of aging temperature leads to the decrease of recovery ratio. The stress hysteresis shows the opposite dependence on aging temperature. The relationship between aging treatment and martensitic transformation and superelasticity can be rationalized by the evolution of Ti3Ni4 precipitate. |
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| Keywords: | TiNiCr shape memory alloy martensitic transformation superelasticity aging |
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