| 薄片状TiNi合金/不锈钢激光微焊接接头组织特征 |
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| 引用本文： | 陈玉华,龚伟怀,倪 泉,柯黎明.薄片状TiNi合金/不锈钢激光微焊接接头组织特征[J].稀有金属材料与工程,2011,40(11):2026-2029. |
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| 作者姓名： | 陈玉华 龚伟怀 倪 泉 柯黎明 |
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| 作者单位： | 1. 哈尔滨工业大学先进焊接与连接国家重点实验室,黑龙江哈尔滨150001;南昌航空大学,江西南昌330063
2. 南昌航空大学,江西南昌,330063 |
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| 基金项目： | 现代焊接生产技术国家重点实验室开放课题 (200803); 江西省自然科学基金项目 (2007GQC1513) |
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| 摘 要： | 采用微型脉冲激光对0.2 mm厚的薄片状TiNi形状记忆合金/不锈钢异种材料进行对接焊，研究了接头的微观组织特征。结果表明，以纯Ni丝为填充材料、以微型脉冲激光为热源可以实现TiNi合金/不锈钢异种材料的良好焊接。焊缝中心区为细小的等轴晶组织，主要元素为Ti、Ni、Fe。Ti元素的含量和不锈钢母材基本接近， Ni元素的含量略高于TiNi合金母材，远高于不锈钢母材，但TiNi合金母材一侧基本没有Fe元素。TiNi合金母材与焊缝之间存在明显的界面区，宽度为10～20 μm，界面区有从不锈钢母材扩散而来的Fe、Cr元素。不锈钢母材与焊缝之间界面区的宽度较小，表现为界面线
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| 关 键 词： | TiNi合金/不锈钢异种材料 微激光焊接 微观组织 元素分布 |
| 收稿时间： | 2010/11/28 0:00:00 |
Microstructure Characteristics of Laser Micro Welding Joint between TiNi Shape Memory Alloy Sheet and Stainless Steel Sheet |
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| Chen Yuhu,Gong Weihuai,Ni Quan and Ke Liming.Microstructure Characteristics of Laser Micro Welding Joint between TiNi Shape Memory Alloy Sheet and Stainless Steel Sheet[J].Rare Metal Materials and Engineering,2011,40(11):2026-2029. |
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| Authors: | Chen Yuhu Gong Weihuai Ni Quan and Ke Liming |
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| Affiliation: | State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Dissimilar materials of TiNi shape memory alloy(SMA) and stainless steel of 0.2 mm thickness were butt welded by micro impulse laser and the microstructure characteristics of the weld joint were studied.The results show that good joining between TiNi SMA and stainless steel can be realized with pure Ni wire as filler material and micro impulse laser as welding heat source.The microstructures of weld center are fine equiaxed crystals and the main elements in weld seam are Ti,Ni and Fe.In weld seam,the conten... |
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| Keywords: | dissimilar materials of TiNi shape memory alloy and stainless steel micro laser welding microstructure element distribution |
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