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针对7085铝合金航空构件的热加工工艺问题,对7085铝合金在300～450℃和0.0001～1s-1条件下进行等温压缩实验,建立了7085铝合金热加工图并且分析了7085铝合金热成形性。结果表明:温度340~450℃、应变速率0.0001～1s-1为加工安全区;失稳区域为温度300～340℃、应变速率0.01～1s-1,在此区域加工时,形成绝热剪切带且带内组织为剧烈拉长晶粒;潜在危险加工区域为温度300～340℃、应变速率0.0001～0.01s-1;建议在温度340～410℃、应变速率0.0004～1s-1选择工艺参数。
Aiming at the hot working process of 7085 aluminum alloy components, 7085 aluminum alloy was subjected to isothermal compression test at 300-450 ℃ and 0.0001-1s-1. The hot working drawing of 7085 aluminum alloy was established and the hot forming of 7085 aluminum alloy was analyzed. Sex. The results show that the temperature ranged from 340 ℃ to 450 ℃, and the strain rate from 0.0001 to 1s-1 was the safe zone for processing. The temperature range from 300 ℃ to 340 ℃ and the strain rate from 0.01 to 1s-1 in the instability zone. During the processing, adiabatic shear bands And the in-band microstructure is strongly elongated grains. The potentially hazardous processing area is 300-340 ° C and the strain rate is 0.0001-0.01 s-1. It is suggested that the process parameters be selected at a temperature of 340-410 ° C and a strain rate of 0.0004-1s-1.