| NiTi形状记忆合金丝焊接性研究 |
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| 引用本文： | 牛济泰,阚国丽.NiTi形状记忆合金丝焊接性研究[J].材料科学与工艺,1995,3(4):104-107. |
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| 作者姓名： | 牛济泰 阚国丽 |
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| 作者单位： | 哈尔滨工业大学，北京卫星制造厂，黑龙江省机械工业学校 |
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| 摘 要： | 采用Ｐ１０５－９Ａ精密时间控制交流点焊机进行了ＮｉＴｉ形状记忆合金细丝的十字搭接焊。通过焊接接头的力学性能测试和热影响区宽度与内部组织的结果表明，采用电阻点焊方法，焊接部分的抗拉强度可达母材抗拉强度的９０％以上，接头内部没有或只有少量的铸态组织，热影响区宽度为０．２８ｎｍ文中还对焊接接头进行了变形恢复试验，接头的形状恢复率可达９８％以上。
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| 关 键 词： | 形状记忆合金 电阻点焊 焊接性 |
The Research on Welding Characteristics of Thin wires of NiTi Shape Memory Alloy |
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| Niu Jitai, Zhang Zhongdian,Wang Weiqing ,Kai Guoli, Chang Puhuai, Wang Ruren.The Research on Welding Characteristics of Thin wires of NiTi Shape Memory Alloy[J].Materials Science and Technology,1995,3(4):104-107. |
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| Authors: | Niu Jitai Zhang Zhongdian Wang Weiqing Kai Guoli Chang Puhuai Wang Ruren |
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| Affiliation: | Niu Jitai; Zhang Zhongdian;Wang Weiqing ;Kai Guoli; Chang Puhuai; Wang Ruren(Harbin Institute of Technology) (Beijing Manufacture works of Satellite)Bai Fengchen;Zhao Yan(Hei Long Jing School of Mechanical Manufacturing) |
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| Abstract: | Cruciform joint of thin wires of NiTi shape memory alloy is welded by alternative current welder, whose welding time is controlled accurately. Through measuring the mechanical characteristics of the welded joint and observing the width of HAZ and its microstructure, it can be concluded that the tensile strength of welded joint can reach over 90% of that of the parentmetal and there is no or only a few cast zones in th joint. The width of HAZ is only 0. 28mm. For checking the shape memory effect, a shape recovery test for bended specimen is also done, and the shape recovery of the welded joint can come upto 98% or s. |
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| Keywords: | NiTi shape memeory alloy resistance welding |
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