7N01铝合金热压缩流变行为研究  

Hot Deformation Behavior of 7N01 Aluminum Alloy

作　　者：刘君城[1] 金龙兵[2] 何振波[2] 路丽英[2] 刘红伟[1] 张永安[1] 

机构地区：[1]北京有色金属研究总院有色金属制备加工国家重点实验室,北京100088 [2]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《稀有金属》2011年第6期812-817,共6页Chinese Journal of Rare Metals

基　　金：国家高技术研究发展计划(863计划)重点课题(2008AA030701)资助项目

摘　　要：采用Gleeble-1500D热模拟机进行热压缩变性试验,研究7N01铝合金在变形温度为340～460℃、应变速率为0.01～10.00 s-1条件下的流变应力行为。结果表明:变形温度和应变速率对合金流变应力有显著影响,流变应力随变形温度的升高而降低,随应变速率的增加而升高;合金在低应变速率(0.01,0.10,1.00 s-1)时主要为动态回复软化机制,而在高应变速率(10.00 s-1)时出现动态再结晶软化;7N01铝合金的高温流变行为可用Zener-Hollomon参数描述。The mechanical behavior of 7N01 aluminum alloy during high temperature plastic deformation was studied by isothermal compression in the temperature range of 340-460 ℃ and strain rate of 0.01-10.00 s-1 on Gleeble-1500D thermal mechanical simulator.The results showed that the flow stress of 7N01 was affected by both the strain rate and the deforming temperature,and the flow stress increased with increasing strain rate and decreasing deformation temperature.The main softening mechanism was dynamic recovery at lower strain rate（10.00 s-1）,while when the strain rate was 10.00 s-1,it transformed to be dynamic recrystallization.The flow stress of 7N01 aluminum alloy during high temperature deformation could be represented by Zener-Hollomon parameter.

关 键 词：7N01铝合金 热压缩变形 流变应力 ZENER-HOLLOMON参数 

分 类 号：TG146.2[一般工业技术—材料科学与工程]