连续铸轧流变行为的物理模拟及其应力—应变关系的演变  

Physical simulation of rheological behavior and stress-strain relation evolvement in continuous roll-casting process

作　　者：湛利华[1] 钟掘 李晓谦[1] 黄明辉[1] 

机构地区：[1]中南大学机电工程学院,长沙410083

出　　处：《中国有色金属学报》2004年第12期1995-2002,共8页The Chinese Journal of Nonferrous Metals

基　　金：国家重大基础研究发展规划资助项目 ( 19990 60 490 6)

摘　　要：在Gleeble 15 0 0热 /力机上用专制的夹具系统对铝合金铸轧过程流变行为及其影响因素进行了系列的模拟实验研究 ,得到了不同变形条件下铝合金瞬态凝固连续固态流变成形过程中的形变规律。实验表明铝合金的[液 糊状 固 ]流变过程存在 4个不同特征阶段 ,通过对实验数据进行多元线性回归分析 。A series of simulating experimental studies on the rheological behavior and its influential factors of aluminum alloy in continuous roll-casting process were explored with a Gleeble1500 thermal-mechanical simulation tester and a set of special clamp system. Relevant rheological rules in the process of coupling transient solidification and continuous deformation of roll-casting conditions are obtained. Experimental results indicate that four different characteristic stages exist in the whole rheological process, and relative constitutive models suitable for the given conditions of continuous roll casting process are established through multivariable linear regression analysis of the experimental data.

关 键 词：连续铸轧 流变行为 物理模拟 本构方程 

分 类 号：TG146[一般工业技术—材料科学与工程]