Er对Mg-5Zn-xEr镁合金热裂敏感性的影响

刘耀鸿,王朝辉,刘轲,李淑波,杜文博

Effects of Er on Hot Cracking Susceptibility of Mg-5Zn-xEr Magnesium Alloys

Yaohong LIU,Zhaohui WANG,Ke LIU,Shubo LI,Wenbo DU

表3 Mg-5Zn-xEr合金的各相析出温度和凝固区间范围(临界尺寸法实验)

Table 3 Precipitation temperatures of various phases and solidification temperature range (ΔT) for Mg-5Zn-xEr alloys (x=0.83, 1.25, 2.5, 5. Experiment via critical size method) (℃)

Alloy α-Mg W-phase I-phase ΔT Mg-5Zn-0.83Er 616.4 - 438.7 177.7 Mg-5Zn-1.25Er 613.7 566.6 425.1 188.6 Mg-5Zn-2.5Er 615.3 544.9 419.8 195.5 Mg-5Zn-5Er 593.4 532.1 - 61.3