铸造技术2014，Vol.35Issue(11)：2455-2460,6.
高强韧铝合金半连铸铸锭温度场与应力场数值模拟
Numerical Simulation of Temperature Field and Stress Field of High Strength Aluminum Alloys in Direct-chill Casting Ingot
摘要
Abstract
An thermo-mechanical finite difference model based on MAGMAsoff,was established for the calculation of thermal field and stress field of φ800 mm×2 000 mm direct-chill casting round ingot.The effect of the chill size,start block shape and casting speeds on the temperature field and the stress field were analyzed.The results show that the depth of sump,as well as the ingot temperature gradient is lower,and the cracking tendency decreases as the chill height is 200 mm.The convex shape of the start block is beneficial to decreasing the crack.Meanwhile,the increasing casting speeds result in the deeper sump,the larger temperature gradient and the intensified crack.关键词
高强韧铝合金/MAGMA软件/半连续铸造/圆铸锭/数值模拟Key words
high strength aluminum alloys/ MAGMAsoft/ direct-chill casting/ round ingot/ numerical simulation分类
矿业与冶金引用本文复制引用
罗海军,介万奇,高志明,郑永健,刘永勤,宋文涛..高强韧铝合金半连铸铸锭温度场与应力场数值模拟[J].铸造技术,2014,35(11):2455-2460,6.基金项目
国家重点基础研究发展计划资助项目(2011CB610403). （2011CB610403）
