应变量和应变速率对Ni80A合金热压缩过程动态再结晶的影响  

Influence of strain volume and strain rate on dynamic recrystallization during hot compression of Ni80A alloy

作　　者：戴魏魏 邓琦 赵一帆 权铭国 权国政[3] DAI Weiwei;DENG Qi;ZHAO Yifan;QUAN Mingguo;QUAN Guozheng(Jiangsu Engineering Research Center for Advanced Manufacturing of Ship Power System Components,Nanjing 211121,Jiangsu China;Nanjing COSCO Marine Equipment Parts Co.,Ltd.,Nanjing 211121,Jiangsu China;Chongqing University,Chongqing 400044,China)

机构地区：[1]江苏省船舶动力系统零件先进制造工程技术研究中心,江苏南京211121 [2]南京中远海运船舶设备配件有限公司,江苏南京211121 [3]重庆大学,重庆400044

出　　处：《锻压装备与制造技术》2024年第4期130-133,共4页China Metalforming Equipment & Manufacturing Technology

摘　　要：本文基于已建立的Ni80A合金动态再结晶模型,在有限元模拟软件中建立Ni80A的热压缩有限元模型;探究热塑性变形过程中应变量和应变速率对Ni80A动态再结晶行为的影响规律。结果表明:动态再结晶体积分数随应变量增大而增大,随应变速率增大而减小;平均晶粒尺寸随着应变量增大而减小,随着应变速率增大而减小。Based on the established dynamic recrystallization model of Ni80A alloy,a thermal compression finite element model for Ni80A was developed in finite element simulation software.The study investigates the influence patterns of strain and strain rate on the dynamic recrystallization behavior of Ni80A during thermoplastic deformation.The results indicate that the dynamic recrystallization volume fraction increases with the growth of strain,while it decreases with the increase in strain rate.Moreover,the average grain size decreases with the increase in strain and also decreases with the increase in strain rate.

关 键 词：Ni80A 有限元模拟 动态再结晶 热压缩 

分 类 号：TG146.15[一般工业技术—材料科学与工程]