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材料工程  2015, Vol. 43 Issue (1): 13-17    DOI: 10.11868/j.issn.1001-4381.2015.01.003
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
添加Ni箔中间层的Mg-Al扩散焊接接头界面结构和力学性能
张建1,2,3, 罗国强2, 沈强2, 黄治军1
1. 武汉钢铁(集团)公司研究院, 武汉 430080;
2. 武汉理工大学 材料复合新技术国家重点实验室, 武汉 430070;
3. 华中科技大学 材料科学与工程学院, 武汉 430074
Interfacial Structure and Mechanical Properties of Mg-Al Diffusion Bonded Joint with Ni Foil Interlayer
ZHANG Jian1,2,3, LUO Guo-qiang2, SHEN Qiang2, HUANG Zhi-jun1
1. Research and Development Center of Wuhan Iron and Steel (Group) Corporation, Wuhan 430080, China;
2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
3. College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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摘要 采用扩散焊接工艺,通过添加Ni箔中间层对镁铝异种金属进行焊接.利用无损检测、电子探针、扫描电镜、万能材料试验机研究了Mg/Ni/Al焊接接头界面的组织结构和力学性能.结果表明:Ni箔中间层可以有效阻止界面处Mg,Al元素的相互扩散,接头界面处没有生成Mg-Al金属间化合物.在焊接温度440℃,保温时间90min时,接头抗剪强度达到最大值20.5MPa.Mg/Ni/Al接头由Al,Ni和Mg,Ni的相互扩散形成,接头界面形成Al-Ni过渡区和Mg-Ni过渡区,界面主要物相分别为Al3Ni2,Al3Ni和Mg2Ni,过渡区厚度随焊接温度升高而增加.
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张建
罗国强
沈强
黄治军
关键词 Mg-AlNi箔扩散焊显微结构    
Abstract:Magnesium and aluminum alloys were welded by diffusion bonding using Ni foil as interlayer. Scanning acoustic microscopy (SAM), electronic probe microanalysis (EPMA), scanning electron microscopy (SEM) and universal testing machine were used to characterize the interfacial structure and mechanical properties of the joints. The results show that Mg and Al are bonded successfully by diffusion bonding using Ni interlayer and the Mg-Al inter-diffusion is inhibited. There is no Mg-Al intermetallic compound formed. The maximum shear strength of 20.5MPa is obtained at 440℃ for 90min. Mg/Ni/Al joints are formed by the inter-diffusion of Al, Ni and Mg, Ni. Al-Ni and Mg-Ni diffusion zone formed at the joint interface. Al3Ni2 and Al3Ni are formed at the Al-Ni diffusion zone, and Mg2Ni is formed at the Mg-Ni diffusion zone. The thickness of diffusion zone increases with the increase of welding temperature.
Key wordsMg-Al    Ni foil    diffusion bonding    microstructure
收稿日期: 2013-09-22     
1:  TG405  
基金资助:国家自然科学基金资助项目(51202175)
通讯作者: 罗国强(1980-),男,博士,副研究员,研究方向:梯度复合材料,联系地址:湖北省武汉市珞狮路122号武汉理工大学材料复合新技术国家重点实验室(430070),luogq@whut.edu.cn     E-mail: luogq@whut.edu.cn
引用本文:   
张建, 罗国强, 沈强, 黄治军. 添加Ni箔中间层的Mg-Al扩散焊接接头界面结构和力学性能[J]. 材料工程, 2015, 43(1): 13-17.
ZHANG Jian, LUO Guo-qiang, SHEN Qiang, HUANG Zhi-jun. Interfacial Structure and Mechanical Properties of Mg-Al Diffusion Bonded Joint with Ni Foil Interlayer. Journal of Materials Engineering, 2015, 43(1): 13-17.
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