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OALib Journal期刊
ISSN: 2333-9721
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变形方式对模压变形5052铝合金影响的有限元模拟与试验研究
Keywords: 金属材料,模压变形,有限元模拟,5052铝合金,等效应变,晶粒细化
Abstract:
？采用deform--3d有限元软件研究了限制模压变形(constrainedgroovepressing,cgp)和非限制模压变形(unconstrainedgroovepressing,ugp)两种变形方式对模压变形5052铝合金等效应变累积速率和最终等效应变量的影响,并试验研究了两种变形方式对5052铝合金晶粒细化的影响。结果表明,cgp变形比ugp变形具有更高的等效应变累积速率和终等效应变量;在相同的变形工艺条件下,cgp变形的晶粒细化能力显著优于ugp变形;cgp与ugp变形在晶粒细化能力上的差异是由于模具结构的不同而引起的本质差异,与材料体系和变形工艺条件无关。
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