| TiNi形状记忆合金电阻钎焊接头微观组织分析 |
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| 引用本文： | 薛松柏,吕晓春,陈燕.TiNi形状记忆合金电阻钎焊接头微观组织分析[J].焊接学报,2004,25(3):7-10. |
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| 作者姓名： | 薛松柏 吕晓春 陈燕 |
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| 作者单位： | 1. 南京航空,航天大学,南京,210016
2. 哈尔滨焊接研究所,哈尔滨,150080 |
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| 基金项目： | 20 0 3黑龙江省科学技术计划重点项目 ( 2 0 0 3 10 0 1) |
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| 摘 要： | 利用自行改制的数控交流电阻焊机，采用CuNi薄带钎料，配合改进型钎剂实现了TiNi形状记忆合金电阻钎焊连接。借助于光学显微镜、SEM及EDX对钎缝的组织进行了分析。结果表明，试验采用的电阻钎焊工艺对母材的热影响极小，接头中没有明显的热影响区；在钎缝中存在的Ti，Ni4化合物相是TiNi合金产生双程及全程形状记忆效应的主要因素。
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| 关 键 词： | TiNi形状记忆合金 Ti，Ni4相 形状记忆效应 电阻钎焊 |
| 文章编号： | 0253-360X(2004)03-07-04 |
| 收稿时间： | 2004/2/9 0:00:00 |
Analysis on micro structure of resistance-brazed joint of TiNi shape memory alloy |
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| XUE Song-bai,LO Xiao-chun and CHEN Yan.Analysis on micro structure of resistance-brazed joint of TiNi shape memory alloy[J].Transactions of The China Welding Institution,2004,25(3):7-10. |
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| Authors: | XUE Song-bai LO Xiao-chun and CHEN Yan |
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| Affiliation: | XUE Song-bai1,LO Xiao-chun2,CHEN Yan2 |
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| Abstract: | Resistance brazing TiNi shape memory alloy wire with theself-improved numerical control alternating current resistance welding ma-chine and CuNi filler foil matching the improved flux is realized. Micro-structures of resistance-brazed joint are analyzed using Optical Micro-scope, SEM and EDX measures. The results show that resistance brazingtechnology has less effect on the microstructure of base metal, and thejoint has no obvious heat-affected zone. Ti3 Ni4 phase compound, which isthe key factor of producing double round and all round shape memoryeffect of TiNi shape memory alloy, is found in the joint. |
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| Keywords: | TiNi shape memory alloy Ti3 Ni4 phase shape memo-ry effect resistance brazing |
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