Effect of Pulsed Laser Welding Process on Microstructure,Crystallization,and Mechanical Properties of Zr57Nb5Cu15.4Ni12.6Al10 Bulk Metallic Glass  

作　　者：Chengyong Wang Yufu Yan Feng Ding Zimin Tang Weizhuan Chen Xuguang Zhu 

机构地区：[1]State Key Laboratory of High Performance Tools,Guangdong University of Technology,Guangzhou 510006,China [2]Dongguan Yihao Metal Technology Co.,Ltd.,Dongguan 523690,China

出　　处：《Chinese Journal of Mechanical Engineering》2025年第1期206-219,共14页中国机械工程学报(英文版)

基　　金：Supported by Guangdong Major Project of Basic and Applied Research,China(Grant No.2019B030302010);National Natural Science Foundation of China (Grant Nos.51735003,52205456)

摘　　要：Avoiding crystallization while maintaining the original microstructure and mechanical properties of the material are long-term goals of laser welding of Zr-based bulk metallic glass(BMG).In this paper,the effect of pulsed laser welding parameters on the microstructure,crystallization degree,and mechanical properties of Zr57Nb5Cu15.4Ni12.6Al10 BMG is investigated.Non-crystallized welding forming of a zirconium-based amorphous alloy is achieved by optimizing the process parameters of pulsed laser welding.The crystallization degree of Zr-based BMG is mainly determined by the welding speed and power.The welding depth and crystallization area fraction increase with an increase in the effective peak power density.The optimized welding process can effectively reduce the heat accumulation of the weld,thus avoiding crystallization.The flexural strength of the weld can be maintained at 96.5%of the matrix.

关 键 词：Zr-based bulk metallic glass Pulsed laser welding process MICROSTRUCTURE Mechanical properties 

分 类 号：TG456.7[金属学及工艺—焊接]