文献类型：期刊文献

中文题名：6061铝合金半固态本构方程的研究

英文题名：Research on the constitutive equation of 6061 aluminum alloys in the hot compressive deformation

作者：唐小玲[1];尚淑珍[1];路贵民[1];赵福全[2];丁勇[2]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]浙江吉利汽车研究院(有限公司),临海317000

年份：2011

卷号：18

期号：1

起止页码：110

中文期刊名：塑性工程学报

外文期刊名：Journal of Plasticity Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金资助项目(50874049);科技部国际科技合作资助项目(2008DFB50020)

语种：中文

中文关键词：半固态;6061铝合金;触变压缩;本构方程

外文关键词：semi-solidl 6061 aluminum alloy; thixo-compression; constitutive model

摘要：采用Gleeble3800热模拟试验机,对采用近液相线半连续铸造方法制备的6061铝合金半固态坯料进行热模拟压缩试验,研究变形温度为585℃~605℃、应变速率为0.01/s^10/s时,变形温度和应变速率对变形行为的影响。结果表明,半固态铝合金的流动应力随变形温度的升高而降低,随应变速率的增大而增大。以半固态触变压缩试验结果为基础,建立了反映半固态6061铝合金变形行为的本构方程,并进行回归分析。结果表明,该模型具有良好的精度,试验确定的6061铝合金本构关系的适用温度范围为585℃~605℃,应变速率范围为0.01/s^10/s。
Effects of deformation temperature and strain rate on deformation behavior of semi-solid 6061 alloy were investigated on Gleeble 3800 thermal-mechanical simulator. The temperature range was 585℃ 605℃ and the strain rate range was 0.01/s- 10/s. The results show that flow stress decrease with the increase of deformation temperature and decrease of strain rate. Based on the experimental data of semi solid 6061, the constitutive equation was established to describe the relationship between the processing parameters and flow stress with the help of regression analysis. Regression results show that the model had high regression precision. The suitable temperature range of this model for 6061 aluminum alloy is 585℃ -605℃, and the strain rate is 0.01/s-10/s.