Abstract
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 2 cycles. 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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Acknowledgments
This work was financially supported by the National Natural Science Foundation of China (No. 50904021), the Naural Science Foundation of the Education Department of Anhui Province (No.KJ2014A023) and the Scientific Research Starting Foundation of Anhui Polytechnic University (No.2012YQQ006).
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Wang, G., Huang, YJ., Makhanlall, D. et al. Resistance spot welding of Ti40Zr25Ni3Cu12Be20 bulk metallic glass: experiments and finite element modeling. Rare Met. 36, 123–128 (2017). https://doi.org/10.1007/s12598-014-0354-8
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DOI: https://doi.org/10.1007/s12598-014-0354-8