Ti-6Al-4V合金多道次热轧过程有限元模拟与实验  

Finite Element Simulation and Experiment of Multipass Hot Rolling for Ti-6Al-4V Alloy

作　　者：胡明[1,2] 董利民[2] 张志强[2] 雷晓飞[2] 杨锐 沙玉辉[1] Hu Ming;Dong Limin;Zhang Zhiqiang;Lei Xiaofei;Yang Rui;Sha Yuhui(Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China;Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]东北大学材料各向异性及织构教育部重点实验室,辽宁沈阳110819 [2]中国科学院金属研究所,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2020年第3期956-961,共6页Rare Metal Materials and Engineering

摘　　要：采用热力耦合方法对Ti-6Al-4V合金进行了多道次热轧模拟,研究了不同道次温度和等效塑性应变的分布特点。模拟结果表明,轧制过程表面温度低于心部的温度,随轧制道次的增加,表面温度整体表现为降低过程,中心温度整体表现为先升高后降低过程。中心位置比表面位置的等效塑性应变大,表面位置与中心位置的等效塑性应变均随变形道次的增加而增大。结果表明,随着轧制道次的增加,中心显微组织变形大于表面。中心区域组织易于发生动态球化。The multipass hot rolling simulation of Ti-6 Al-4 V alloy was carried out by thermo-mechanical coupling method. The distribution characteristics of temperature and equivalent plastic strain at different passes on the cross section were studied. The simulation results show that the temperature of surface is lower than that of the center. With the increase of the rolling pass, the temperature of surface area decreases, while the temperature of the center increases first and then decreases. Equivalent plastic strains in both surface and center increase with the increase of the rolling passes. The equivalent strain in the center is larger than that in the surface. The experimental results show that with the increase of the rolling pass, the deformation of microstructure in the central region is larger than that in the surface region. The temperature in the central region is higher, where dynamic spheroidization occurs more easily.

关 键 词：TI-6AL-4V合金 有限元模拟 轧制 

分 类 号：TG146.23[一般工业技术—材料科学与工程]