摘要
采用Gleeble-1500热模拟试验机对AZ61镁合金在变形温度为250~400℃、应变速率为0.001~10.000s-1条件下进行热压缩试验,研究了合金的热压缩变形行为及热加工图。结果表明,合金在高应变速率（10.000s-1）变形条件下具有较高的能量耗散率;该工艺范围内动态再结晶同时在初始晶界和孪晶上发生,合金具有较高的再结晶程度。因此,变形温度为250~400℃、应变速率为10.000s-1是较好的热加工工艺。
Hot compression of AZ61 magnesium alloy was conducted on the Gleeble-1500hot-simulator at 250~400℃ and 0.001~10s-1,and the deformation behavior and processing map of the AZ61 alloy were investigated.The results show that ZA61 alloy deformed at strain rate of 10s-1 exhibits higher power dissipation,and dynamic recrystallizaton（DRX）occurs extensively both at the grain boundaries and twins,consequently resulting in a more homogeneous DRX grains.Therefore,the optimized processing parameters of AZ61 alloy are the temperature range of 250~400℃ and strain rate of 10s-1.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2014年第1期19-22,共4页
Special Casting & Nonferrous Alloys
关键词
AZ61镁合金
热压缩变形
加工图
显微组织
动态再结晶
AZ61Alloy
Hot Compression Deformation
Processing Map
Microstructure
Dynamic Recrystallization
