铸轧速度对AZ31镁合金铸轧凝固焊合线的影响  

Effect of Casting-Rolling Speed on Solidification Welding Line of AZ31 Magnesium Alloy

作　　者：黄志权[1] 来洪玉 郭浩 王军朋 HUANG Zhiquan;LAI Hongyu;GUO Hao;WANG Junpeng(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024

出　　处：《热加工工艺》2023年第1期93-95,100,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(52075357);山西省重点科研科技创新项目(201803D121026);国家重点研发计划项目(2018YFA0707301);山西省研究生教育创新项目(2020SY430);山西省科技重大专项项目(20181102016)。

摘　　要：通过有限元软件对水平双辊铸轧AZ31镁合金过程进行仿真,研究铸轧速度对凝固焊合线特征的影响。结果表明铸轧速度对凝固焊合线位置和形状有决定性的影响。随着铸轧速度提高,凝固焊合线沿铸轧方向朝出口偏移的同时铸轧板边部应力显著降低,有效缓解了镁合金铸轧边裂。The horizontal twin roll casting-rolling process of AZ31 magnesium alloy was simulated by finite element software. The effect of casting-rolling speed on the solidification welding line characteristics was studied. The results show that the casting-rolling speed has a decisive influence on the position and shape of the solidification welding line. With the increase of casting-rolling speed, the solidification welding line moves towards the exit along the casting-rolling direction,while the edge stress of the casting-rolling plate decreases significantly, which effectively alleviates the edge crack of magnesium alloy casting-rolling.

关 键 词：AZ31镁合金 水平双辊铸轧 铸轧速度 凝固焊合线 

分 类 号：TG335.5[金属学及工艺—金属压力加工]