Resistance spot welding of Ti40Zr25Ni3Cu12Be20 bulk metallic glass:experiments and finite element modeling
来源期刊：Rare Metals2017年第2期
论文作者：Gang Wang Yong-Jiang Huang Deodat Makhanlall Jun Shen
文章页码：123 - 128
摘 要：The use of resistance spot welding（RSW）technology for joining Ti40Zr25Ni3Cu12Be20 metallic glass was investigated.The microstructure obtained from the welded BMG sample was studied.Joint without precipitates was prepared with welding current of 5.0 kA for 2cycles.A fully coupled thermal-electrical-mechanical finite element model（FEM） was developed to complement the experimental study.The simulated results agree well with the measurements.The effects of key process parameters such as welding current and welding time on the evolvement and microstructure of the weldment were determined and discussed.Moreover,the critical cooling rate for preserving the amorphous state in the weld fusion zone is determined to be approximately 1×103 K·s-1.
Gang Wang1，Yong-Jiang Huang2，Deodat Makhanlall2，Jun Shen2
1. School of Mechanical and Automotive Engineering,Anhui Polytechnic University2. School of Materials Science and Engineering,Harbin Institute of Technology
摘 要：The use of resistance spot welding（RSW）technology for joining Ti40Zr25Ni3Cu12Be20 metallic glass was investigated.The microstructure obtained from the welded BMG sample was studied.Joint without precipitates was prepared with welding current of 5.0 kA for 2cycles.A fully coupled thermal-electrical-mechanical finite element model（FEM） was developed to complement the experimental study.The simulated results agree well with the measurements.The effects of key process parameters such as welding current and welding time on the evolvement and microstructure of the weldment were determined and discussed.Moreover,the critical cooling rate for preserving the amorphous state in the weld fusion zone is determined to be approximately 1×103 K·s-1.
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