锻造工艺参数对新能源汽车用新型镁合金组织与性能的影响  

Influence of forging process parameters on microstructure and properties for new type magnesium alloy used in new energy vehicles

作　　者：杨哲[1] 陈水胜[2] Yang Zhe;Chen Shuisheng(Faculty of Mechanical and Electrical Engineering,Changjiang Institute of Technology,Wuhan 430212,China;School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]长江工程职业技术学院机电工程学院,湖北武汉430212 [2]湖北工业大学机械工程学院,湖北武汉430068

出　　处：《锻压技术》2025年第1期26-32,共7页Forging & Stamping Technology

基　　金：国家自然科学基金委员会青年科学基金资助项目(42107214);湖北省自然科学基金资助项目(2020CFB122)。

摘　　要：为了研究新能源汽车用Mg-8Al-1Zn-0.6Ca新型镁合金的锻造工艺,获得优化工艺参数,采用不同的锻造温度、锻造道次和压下量对Mg-8Al-1Zn-0.6Ca新型镁合金试样进行锻造加工,并分析了各种锻造工艺参数下合金的显微组织以及力学性能。结果表明,随着锻造温度从250℃提高至450℃、压下量从30%增加至50%、锻造道次从1次增加至5次,平均晶粒尺寸先减小后增大,力学性能先提高后降低。在锻造温度为350℃、锻造道次为4次、压下量为45%、压下速率为10 mm·s^(-1)的优化锻造工艺参数下,试样的组织最细小,抗拉强度和屈服强度均达到最大,断后伸长率为17.5%。In order to study the forging process of new magnesium alloy Mg-8Al-1Zn-0.6Ca used in new energy vehicles and obtain optimized process parameters,new magnesium alloy Mg-8Al-1Zn-0.6Ca samples were forged in different forging temperatures,forging passes and reduction amounts.Then,the microstructures and mechanical properties of the alloy with various forging process parameters were analyzed.The results indicate that when the forging temperature changes from 250℃ to 450℃,the reduction amount increases from 30%to 50%,and the number of forging passes increases from 1 to 5,the average grain size decreases first and then increases,and the mechanical properties improves first and then decreases.Under the optimized forging process parameters with the forging temperature of 350℃,the forging pass of four,the reduction amount of 45%,and the reduction rate of 10 mm·s^(-1),the structure of sample is the smallest,the tensile strength and the yield strength both reach the maximum values,and the elongation after fracture is 17.5%.

关 键 词：Mg-8Al-1Zn-0.6Ca新型镁合金 锻造工艺 锻造温度 锻造道次 压下量 

分 类 号：TH164[机械工程—机械制造及自动化]