| Ti-49.6Ni合金在拉压对称循环载荷下的电阻-温度曲线 |
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| 引用本文： | 胡强,金伟,曹名洲,李守新,刘晓鹏.Ti-49.6Ni合金在拉压对称循环载荷下的电阻-温度曲线[J].材料研究学报,2001,15(6):605-609. |
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| 作者姓名： | 胡强 金伟 曹名洲 李守新 刘晓鹏 |
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| 作者单位： | 1. 中国科学院金属研究所
2. 大连理工大学 |
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| 基金项目： | 国家重大基础研究资助项目G19990650． |
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| 摘 要： | 用电阻法测量了固溶后Ti-49.6Ni形状记忆合金的相变行为，马氏体逆相变具有明显的相变温度点；在降温过程中没有发生R相变。在该热处理制度下材料疲劳后，在升温过程中没有明显的逆相变温度点；在降温过程中出现R相变。电阻-温度曲线特征发生明显规律性变化，提出一种解释这一现象的微观机制。
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| 关 键 词： | TiNi形状记忆合金 拉压对称循环载荷 R－T曲线 电阻－温度曲线 钛镍合金 电阻法 相变 |
| 文章编号： | 1005-3093(2001)06-0605-05 |
| 修稿时间： | 2000年11月2日 |
RESISTANCE-TEMPERATURE CURVE DUE TO CYCLIC LOAD UNDER SYMMETRIC TENSION-COMPRESSION FOR Ti-49.6Ni ALLOY |
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| HU Qiang,JIN Wei CAO Mingzhou LI Shouxin.RESISTANCE-TEMPERATURE CURVE DUE TO CYCLIC LOAD UNDER SYMMETRIC TENSION-COMPRESSION FOR Ti-49.6Ni ALLOY[J].Chinese Journal of Materials Research,2001,15(6):605-609. |
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| Authors: | HU Qiang JIN Wei CAO Mingzhou LI Shouxin |
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| Abstract: | The transformation behavior was studied by electrical resistance method for Ti-49.6Ni shape memory alloy after solution, results showed that there was no R transformation occurred during the martensite transformation, and the reverse martensite transformation temperature points As as well as Af could be discerned clearly in the heating process. With the same kind of heat treatment, R transformation occurred after the specimen underwent cyclic stress or strain, in the meantime the reverse transformation temperature points As, Af were illegible during the reverse martensite transformation. The characteristics of resistance-temperature Curve(R-T curve) of Ti-49.6Ni shape memory alloy changed apparently and regularly. A micro-sructural mechanism was proposed to interprete observed effect in this paper. |
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| Keywords: | TiNi shape memory alloy cyclic load under symmetric tension-compression R-Tcurve |
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