Resistance spot welding of Ti40Zr25Ni3Cu12Be20 bulk metallic glass：experiments and finite element modeling

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-m...

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Bibliographic Details
Published in:Rare metals 2017-02, Vol.36 (2), p.123-128
Main Authors: Wang, Gang, Huang, Yong-Jiang, Makhanlall, Deodat, Shen, Jun
Format: Article
Language:English
Subjects:
Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
临界冷却速率
块体金属玻璃
有限元建模
有限元模型
焊接电流
玻璃技术
电阻点焊
试验
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Summary: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 1×10^3 K·s^-1.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-014-0354-8