锰黄铜合金高温变形及本构模型研究  

Research on High Temperature Deformation and Constitutive Model of Mn Brass Alloy

作　　者：王梦寒[1] 夏知姿 李雁召[1] 王文浩[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2016年第4期46-48,共3页Hot Working Technology

基　　金：科技部国家重大专项项目(CDJXS12131109);中央高校基本科研业务费资助(CDJXS12131109)

摘　　要：采用THERMECMASTOR-Z热模拟试验机,在变形温度650~800℃、应变速率0.01~10 s-1的条件下,进行了锰黄铜高温流变行为的相关研究。采用Arrhenius的双曲正弦模型,建立了锰黄铜流变应力与变形温度、应变速率之间的本构模型。结果表明：锰黄铜为正应变敏感材料,其流变应力随应变速率的增加而升高,随变形温度的增加而降低。该研究为锰黄铜热成形加工工艺的制定提供了理论依据。The research on high temperature flow behavior of manganese brass was conducted by compression test at deformation temperature of 650℃-800℃ and strain rate of 0.01s-1 -10s-1 on THERMECMASTOR-Z thermal-mechanical simulator. The constitutive model about flow stress, deformation temperature and strain rate of manganese brass was established by using Arrhertius hyperbolic-sine model. The results show that the manganese brass is sensitive to positive strain. The flow stress increases with strain rate increasing, and decreases with deformation temperature increasing. The constitutive model can provide theoretical basis for hot forming processing of manganese brass.

关 键 词：锰黄铜 热物理模拟 Arrheniu 本构模型 

分 类 号：TG113.2[金属学及工艺—物理冶金]