铝/钢微束等离子熔钎焊接头组织及力学性能

樊丁; 康玉桃; 黄健康; 于晓全; 潘伟

doi:10.12073/j.hjxb.2019400035

铝/钢微束等离子熔钎焊接头组织及力学性能

1. 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室，兰州　730050;
2. 兰州理工大学材料科学与工程学院，兰州　730050

基金项目:

国家自然科学基金资助项目(51465031)

详细信息

作者简介:
樊　丁，男，1961年出生，教授，博士研究生导师. 主要从事焊接物理、焊接方法与智能控制及激光加工等方面的研究. 发表论文200余篇. Email: fand@lut.cn

中图分类号: TG 457
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出版历程
- 收稿日期: 2018-06-25

Microstructure and mechanical property of welding-brazing joint between aluminum and steel by micro-beam plasma welding

1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

摘要

摘要: 采用微束等离子焊接方法进行6010铝合金/镀锌钢对接熔钎焊工艺试验，在合适的工艺参数下获得成形良好的铝/钢熔钎焊对接接头，采用金相显微镜、扫描电子显微镜、能谱仪、拉伸试验机等多种测试手段对所得接头形貌、微观组织及力学性能进行分析. 结果表明，所得接头焊缝正、背面铺展良好，无气孔、裂纹、夹渣等明显缺陷，为典型的铝/钢熔钎焊对接接头；接头界面处形成锯齿状的Fe₂Al₅金属间化合物，且金属间化合物层厚度和焊缝铺展宽度共同决定了接头强度，当焊接电流为38.5 A时，熔钎焊接头抗拉强度为193 MPa，为铝母材的79.8%，接头断裂形式为韧脆混合断裂.
- 微束等离子熔钎焊 /
- 铝合金/钢 /
- 金属间化合物 /
- 铺展宽度 /
- 接头强度
Abstract: Butt welding-brazing joint between 6010 aluminum alloy and galvanized steel sheets was obtained by micro-beam plasma welding method. A sound weld joint could be obtained in the suitable welding parameter. The analysis was carried out for the weld joint morphology, microstructure and mechanical property using metallographic microscope, scanning electron microscope, energy-dispersive spectrometer and universal tensile testing machine. The results show that a good spreading width is got in back and front sides of weld joint, there are no obvious crack, pore, slag in the joint, and the joint shows a typical welding-brazing characteristic. The serrated intermetallic compound Fe₂Al₅ is formed at the interface. The joint strength is determined by the thickness of intermetallic compound layer and the spreading width. When the welding current is 38.5 A, the tensile strength of weld joint is 193 MPa, which can reach 79.8% of aluminum base material. The fracture form of joint is ductile-brittle fracture.
- micro-beam plasma welding-brazing /
- aluminum alloy/steel /
- intermetallic compound /
- spreading width /
- joint strength

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参考文献(14)

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文章访问数: 126
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铝/钢微束等离子熔钎焊接头组织及力学性能

作者简介: 樊 丁，男，1961年出生，教授，博士研究生导师. 主要从事焊接物理、焊接方法与智能控制及激光加工等方面的研究. 发表论文200余篇. Email: fand@lut.cn

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出版历程

Microstructure and mechanical property of welding-brazing joint between aluminum and steel by micro-beam plasma welding

期刊类型引用(7)

其他类型引用(2)

计量

出版历程

目录

作者简介:
樊　丁，男，1961年出生，教授，博士研究生导师. 主要从事焊接物理、焊接方法与智能控制及激光加工等方面的研究. 发表论文200余篇. Email: fand@lut.cn