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
杨哲 1陈水胜2
作者信息
- 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
- 折叠
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%.
Abstract
In order to study the forging process of new magnesium alloy Mg-8Al-1Zn-0.6Ca used in new energy vehicles and obtain opti-mized 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 ana-lyzed.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 mechani-cal 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Key words
new type magnesium alloy Mg-8Al-1Zn-0.6Ca/forging process/forging temperature/forging pass/reduction amount引用本文复制引用
出版年
2025
NETL
NSTL
万方数据