激光焊接块体非晶合金Zr45Cu48A17

Laser welding of bulk metallic glass Zr45Cu48Al7

采用传统激光焊接技术连接块体非晶合金Zr45Cu48Al7,试验结果显示:焊接速率为2m/min时,熔化区主要生成τ5(Zr38Cu36Al26)相,热影响区主要生成ZrCu相,含有少量τ5相;焊接速率为4m/min时,熔化区保持了非晶特性,热影响区有晶粒生成;当焊接速率8m/min时,热影响区和熔化区均保持非晶特性。

Using a conventional laser welding method,we have welded two pieces of bulk metallic glasses of Zr45Cu48A17 without crystallization.The results indicates that the majority of the compounds in molten zone were produced to be τ5（Zr38Cu36A126）,those in the HAZ were ZrCu with small amount of τ5 when the welding speed was 2 m/min,and the compounds existed in HAZ and the molten zone kept amorphous ,while the welding speed was 4 m/min ,and the formation of any crystalline phases was not detected at the interface, When the welding speed was 8 m/min.