电磁耦合处理对7050铝合金承力框铸件初始残余应力调控研究  

Control of Initial Residual Stress of 7050 Aluminum Alloy Load-bearing Frame Casting by Electromagnetic Coupling Treatment

作　　者：钟福 王松涛 王杰[1,2] 阿什里拉 黄坤兰 ZHONG Fu;WANGSongtao;WANG Jie;AshiLila;HUANGKunlan(School of Mechanical Engineering,Sichuan University,Chengdu 610065,China;Yibin Industrial Technology Research Institute of Sichuan University,Sichuan University,Yibin 644000,China;AECC Chengdu Engine Co.,Ltd.,Chengdu 610503,China)

机构地区：[1]四川大学机械工程学院宜宾研究院,四川成都610065 [2]四川大学宜宾四川大学产业技术研究院,四川宜宾644000 [3]中国航发成都发动机有限公司,四川成都610503

出　　处：《热加工工艺》2024年第22期145-149,共5页Hot Working Technology

基　　金：国家自然科学基金项目(51705348);宜宾市与四川大学战略合作专项基金项目(2019CDYB-6);四川省科技厅科技成果转移转化项目(重大)(2021ZHCG0009)。

摘　　要：通过电磁耦合处理工艺参数的变化研究了7050铝合金承力框铸件的力学性能及初始残余应力。结果表明,在磁场强度为1.5 T,电流强度为25 A/mm^(2)时,7050铝合金的抗拉强度可提升10 MPa,伸长率提高16.73%,电阻率提升3.24%,塑性增强。7050铝合金承力框铸件初始残余应力小且分布均匀。采用磁场强度为1.5 T、电流强度为25A/mm^(2)的工艺参数,可使初始残余应力降低约10%。The mechanical properties and initial residual stress of 7050 aluminum alloy load-bearing frame casting were studied by changing the process parameters of the electromagnetic coupling treatment.The results show that the tensile strength of 7050 aluminum alloy can be increased by 10 MPa,elongation increased by 16.73%,the resistivity increased by 3.24%and plasticity enhanced when the magnetic field intensity is 1.5 T and the current intensity is 25 A/mm^(2).Through the blind hole method and ultrasonic method,the initial residual stress of 7050 aluminum alloy load-bearing frame casting is small and evenly distributed.The initial residual stress can be reduced by about 10%with the magnetic field intensity of 1.5 T and current intensity of 20 A/mm^(2).

关 键 词：7050铝合金 电磁耦合处理 残余应力 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]