| 医用封堵器中形状记忆合金与不锈钢的焊接 |
| |
| 引用本文： | 吕世雄,杨仲林,董红刚.医用封堵器中形状记忆合金与不锈钢的焊接[J].中国有色金属学会会刊,2013,23(1):156-160. |
| |
| 作者姓名： | 吕世雄 杨仲林 董红刚 |
| |
| 作者单位： | 1. 哈尔滨工业大学先进焊接国家重点实验室,哈尔滨,150001
2. 大连理工大学材料科学与工程学院,大连,116085 |
| |
| 基金项目： | Project(50974046/E041607) supported by the National Natural Science Foundation of China |
| |
| 摘 要： | 研究医用封堵器制造过程中的焊接工艺,首先利用钨极氩弧焊(TIG)将一束NiTi形状记忆合金丝焊接在一起,然后采用激光点焊将NiTi形状记忆合金丝接头与不锈钢管焊接起来.采用光学显微镜观察接头的显微结构,并利用电子探针(EPMA)研究接头中合金元素的分布.结果表明,在形状记忆合金TIG焊接头中弥散分布有TiC相,但TiC的含量在形状记忆合金与不锈钢的激光点焊焊缝处较少.在熔合线附近存在元素间的相互扩散,并且在熔合线附近产生金属间化合物Ni3Ti+(Fe,Ni)Ti.
|
| 关 键 词： | 医用封堵器 NiTi合金 形状记忆合金 不锈钢 激光点焊 异种金属连接 Ni3Ti (Fe Ni)Ti |
| 收稿时间： | 18 November 2011 |
Welding of shape memory alloy to stainless steel for medical occluder |
| |
| Shi-xiong L
,
Zhong-lin YANG
,
Hong-gang DONG.Welding of shape memory alloy to stainless steel for medical occluder[J].Transactions of Nonferrous Metals Society of China,2013,23(1):156-160. |
| |
| Authors: | Shi-xiong L Zhong-lin YANG Hong-gang DONG |
| |
| Affiliation: | 1.State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;2.School of Materials Science and Engineering,Dalian University of Technology,Dalian 116085,China |
| |
| Abstract: | Dissimilar metal joining between NiTi shape memory alloy (SMA) and stainless steel was conducted. A cluster of NiTi SMA wires were first joined with tungsten inert gas (TIG) welding process, then the NiTi SMA TIG weld was welded to a stainless steel pipe with laser spot welding process. The microstructure of the welds was examined with an optical microscope and the elemental distribution in the welds was measured by electron probe microanalysis (EPMA). The results show that TiC compounds dispersively distribute in the NiTi SMA TIG weld. However, the amount of TiC compounds greatly decreases around the fusion boundary of the laser spot weld between the NiTi SMA and stainless steel. Mutual diffusion between NiTi shape memory alloy and stainless steel happen within a short distance near the fusion boundary, and intermetallic compounds such as Ni3Ti+(Fe,Ni)Ti appear around the fusion boundary. |
| |
| Keywords: | medical occluder NiTi alloy shape memory alloy stainless steel laser spot welding dissimilar metal joining Ni3Ti (Fe Ni)Ti |
| 本文献已被 CNKI 万方数据 ScienceDirect 等数据库收录！ |
|
