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
戴魏魏 1邓琦 2赵一帆 2权铭国 2权国政2
作者信息
- 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;南京中远海运船舶设备配件有限公司,江苏 南京 211121
- 2. 重庆大学,重庆 4000441
- 折叠
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.
Abstract
Based on the established dynamic recrystallization model of Ni80A alloy,a thermal compression fi-nite 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 thermo-plastic 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 decreas-es 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Key words
Ni80A/Numerical simulation/Dynamic recrystallization/Thermocompressio引用本文复制引用
出版年
2024
NETL
NSTL
万方数据