宇航材料工艺2018，Vol.48Issue(3)：27-32,6.DOI:10.12044/j.issn.1007-2330.2018.03.006
TC4钛合金惯性摩擦焊接过程的数值模拟
Numerical Simulation of Inertial Friction Welding of TC4 Titanium
李潍 1李慎华 1贾成阁 1毕海峰 2关英俊1
作者信息
- 1. 长春工业大学机电工程学院,长春130012
- 2. 长春数控机床有限公司,长春130033
- 折叠
摘要
Abstract
Based on ABAQUS finite element analysis software,a two-dimensional axisymmetric model of TC4 titanium alloy inertial friction welding (IFW) process was established.The thermal coupling analysis of TC4 titanium alloy by inertial friction welding was carried out by establishing Johnson-Cook damage model and ALE technique.It was found that TC4 inertial friction welding increased to about 200 ℃ to 300 ℃ in 0.2 s,up to 1 100 to 1 200 ℃ in 0.5 s and then reached to a flatten.After reaching the peak,the temperature droped slowly and the welding were completed.The axial shortening is very small within 0.6 s,and it increases very fast and reaches a peak substantially at temperatures of 1 100 to 1 200 ℃ (0.6 to 1.2 s),from 1.2 to 1.4 s axial shortening increases slowly due to cementation.The temperature no longer increases after 1.4 s,and the welding is completed and the axial shortening is no longer increased.The initial stage of axial stress basically unchanged,with increasing temperature (0.2 to 0.5 s) compressive stress increases in the central region.The stress concentration in the center is more obvious,after 1.2 s tensile stress increases significantly.The radial stress increases with temperature,center stress was significantly higher than the outside and the metal flow to both sides.This leads to the result that the flash formation is mainly due to the complicated effect of high temperature,axial stress and radial stress.The simulation results are basically consistent with the actual results,which can provide an important reference for improving the welding quality of inertial friction welding.关键词
TC4/惯性摩擦焊/数值模拟/Johnson-Cook损伤模型/ALE技术Key words
TC4/IFW/Numerical simulation/Johnson-Cook damage model/ALE technology分类
矿业与冶金引用本文复制引用
李潍,李慎华,贾成阁,毕海峰,关英俊..TC4钛合金惯性摩擦焊接过程的数值模拟[J].宇航材料工艺,2018,48(3):27-32,6.
