| 热循环对预应变NiTi记忆合金丝/铝基复合材料马氏体逆相变的影响 |
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| 引用本文： | 崔立山,杨大智. 热循环对预应变NiTi记忆合金丝/铝基复合材料马氏体逆相变的影响[J]. 材料工程, 2002, 0(1): 3-5 |
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| 作者姓名： | 崔立山 杨大智 |
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| 作者单位： | 1. 石油大学材料科学与工程系,北京,102200
2. 大连理工大学材料系,大连,116023 |
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| 基金项目： | 自然科学青年基金资助项目 ( 5 0 0 710 37),石油大学 (北京 )校基金资助项目 |
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| 摘 要： | 采用热压法将0.26mm的NiTi合金丝复合于铝中,利用SEM,DSC,热膨胀仪等实验手段研究了热循环对预应变为4%的NiTi合金丝/铝基复合材料马氏体逆相变的影响。结果表明,在第一次加热过程中,马氏体逆转变开始温度明显升高;第二次加热过程中逆转变开始温度比未预应变样品略有降低;随热循环次数增加,逆相变开始温度降低;当循环次数超过30次后,逆转变温度几乎保持不变。并对热循环过程中的马氏相变过程进行了分析讨论。
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| 关 键 词： | NiTi记忆合金 复合材料 热循环 马氏体逆相变 铝 镍钛形状记忆合金 |
| 文章编号： | 1001-4381(2002)01-0003-03 |
| 修稿时间： | 2000-07-25 |
The Effect of Thermal Cycling on the Reverse Martensitic Transformation of Prestrained TiNi Alloy Fibers/Al Matrix Composite |
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| CUI Li shan. The Effect of Thermal Cycling on the Reverse Martensitic Transformation of Prestrained TiNi Alloy Fibers/Al Matrix Composite[J]. Journal of Materials Engineering, 2002, 0(1): 3-5 |
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| Authors: | CUI Li shan |
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| Abstract: | TiNi SMA fibers with 0 28mm in diameter were embedded in aluminum matrix by hot pressing method Scanning electron microscope (SEM), differential scanning calorimeter (DSC) and electric resistance strain gauge were used to study the effect of thermal cycling on the reverse martensitic transformation of TiNi alloy fibers/Al composite after 4% prestrain The results showed that, the reverse transformation temperatures increases obviously in the first heating process In the second heating process, the reverse transformation temperatures decreases, and are almost the same as that of the un prestrained specimen In further thermal cycling process, the reverse temperatures decreases a little and keeps constant after 30 thermal cycling The matensitic transformation behavior during thermal cycling was discussed |
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| Keywords: | TiNi shape memory alloy composite thermal cycling reverse martensitic transformation |
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