摘要
通过在Gleeble1500D热模拟试验机上对AZ10、AZ31、AZ61和AZ91镁合金进行模拟挤压,并对热模拟挤压成形过程中的挤压力进行测定,研究AZ系列镁合金热模拟挤压成形过程挤压力及其组织变化。研究结果表明,在AZ系列镁合金中,随着合金元素含量的增多,挤压力逐渐增大,并且同种镁合金在挤压前经均匀化退火处理后所需的挤压力比未经均匀化处理的合金所需挤压力大,动态再结晶是影响其挤压力大小的决定性因素。
AZ10,AZ31,AZ61 and AZ91 magnesium alloys were deformed with simulated extrusion system on Gleeble 1500D,which can determine the extrusion force during extrusion forming process.The microstructure of the alloys and the evolution of extrusion force were investigated.The results show that the extrusion force increases gradually with the increase of alloy element.Aimed at the same magnesium alloy,the deformed alloy with previous homogenization before extrusion has more extrusion force than that without homogenization,and dynamic recrystallization is a decisive factor in extrusion force during extrusion forming.
出处
《热加工工艺》
CSCD
北大核心
2011年第4期8-10,13,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(50725413)
重庆市科技攻关计划项目(CSTC2009AB4134)
国家重点基础研究发展规划项目(973计划)(2007CB613700)
关键词
镁合金
挤压力
热模拟
均匀化
magnesium alloy
extrusion force
thermal simulation
homogenization
