摘要
通过挤压与连续剪切相结合来制备Al/Mg复合板材,结合Deform-3D软件对Al/Mg双金属复合板材挤压-剪切成形过程中网格变化、等效应力、载荷等进行了数值模拟分析;对Al/Mg复合板材的界面结合层的显微形貌、物相组成、剪切强度以及显微硬度进行了检测与分析。结果表明,随着温度升高,挤压剪切区的等效应力逐渐减小,分别为65.0、51.3、38.0 MPa;行程-载荷随挤压温度的增加而降低;当挤压温度为410℃时,复合板材界面为冶金结合,无明显缺陷,界面结合层的硬度(HV)约为150.1,剪切强度为10 MPa,双金属复合板材结合层结合良好。
Al/Mg bimetallic composite sheet was prepared by combination of extrusion and continuous shear.The mesh variation,equivalent stress and load during the extrusion-shear forming process of Al/Mg bimetallic composite sheet were numerically simulated by Deform-3 D software.The microstructure,phase composition,shear strength and microhardness of the interface bonding layer in Al/Mg bimetallic composite sheet were detected and analyzed.The results reveal that the equivalent stress of the extrusion shear zone is decreased with the increase of temperature,which are 65,51.3 and 38 MPa,respectively.Stroke-load is decreased with the increase of extrusion temperature.When the extrusion temperature is 410℃,the interface of the composite sheet is characterized by metallurgical bonding without obvious defects.The hardness and shear strength of the interface bonding layer is 150.1 HV and 10 MPa,respectively,indicating desirable bonding effect.
作者
赵辉
胡红军
干松林
蒋斌
张丁非
Zhao Hui;Hu Hongjun;Gan Songlin;Jiang Bin;Zhang Dingfei(School of Materials Science and Engineering,Chongqing University of Technology;School of Materials Science and Engineering,Chongqing University)
出处
《特种铸造及有色合金》
CAS
北大核心
2022年第9期1114-1118,共5页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(52071042,51771038)
重庆英才资助项目(CQYC202003047)
重庆市自然科学基金资助项目(cstc2018jcyjAX0249,cstc2018jcyjAX0653)
