5356铝合金热变形行为和热加工图

Bo QIAO,Zhongxue ZHAN,Dengfeng ZHANG,Fubao WU,Shiquan ZHANG,Chunlan LIU,Shiying GAO,Liangchao MA

Hot Working Technology（2019）

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Abstract

通过热压缩试验研究了5356铝合金在变形温度350～500℃和应变速率0.01～10 s-1的热成形性能,建立了5356铝合金本构方程和热加工图.结果表明:5356铝合金高温变形过程主要受位错的热激活能控制;热变形最佳工艺参数是变形温度460～500℃,应变速率0.01～0.05 s-1;不稳定变形工艺参数是变形温度350～380℃和应变速率0.02～0.37 s-1以及变形温度420～500℃和应变速率0.14～10s-1.

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