| 应力诱发马氏体相变滞后的研究 |
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| 引用本文： | 徐惠彬,谭树松. 应力诱发马氏体相变滞后的研究[J]. 金属学报, 1991, 27(1): 68-71 |
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| 作者姓名： | 徐惠彬 谭树松 |
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| 作者单位： | 柏林工业大学，中南工业大学材料系 教授 长沙410083 |
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| 摘 要： | 用Landau-Devonshire自由能理论可描述形状记忆合金伪弹性行为随温度变化的规律:温度上升,滞后环位置提高,滞后面积减小;到达临界温度T_c后,滞后全部消失。可是对CuZnAl单晶系统测定结果显示:滞后环位置随温度升高而升高,但滞后面积在一定温度范围内,却基本不变。对滞后环内变化规律的研究结果指出,滞后大小取决于应力诱发马氏体量的多少,马氏体量越多,则滞后面积越大。
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| 关 键 词： | 形状记忆合金 马氏体 相变滞后 |
| 收稿时间： | 1991-01-18 |
| 修稿时间： | 1991-01-18 |
HYSTERESIS IN STRESS-INDUCED MARTENSITIC TRANSFORMATION |
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| XU Huibin Technische Universitat Berlin,FRG,TAN Shusong Central-South University of Technology,Changsha. HYSTERESIS IN STRESS-INDUCED MARTENSITIC TRANSFORMATION[J]. Acta Metallurgica Sinica, 1991, 27(1): 68-71 |
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| Authors: | XU Huibin Technische Universitat Berlin FRG TAN Shusong Central-South University of Technology Changsha |
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| Abstract: | A simple model based on the Landau-Devonshire theory is capable ofsimulating the pseudoelastic hysteresis behaviour, i. e., the hysteresis becomes smal-ler with increasing temperature and disappears at a critical temperature. The exper-imental results obtained from CuZnAl memory alloy singleicrystalline specimensshow that the width of the hysteresis loop does not change significantly with tem-perature, while the size of the interior loops of hysteresis strongly depends on themartensitic phase fraction induced from austenite. |
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| Keywords: | stress-induced martensite hysteresis free energy |
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