摘要
冷轧变形是铝基复合材料变形应用过程中的重要环节,为提升铝基复合材料的应用性能,以2519铝合金作为金属基材制备铝基复合材料,随其实施热变形挤压与冷轧处理,获取6个冷轧变形量。利用透射电镜与X射线衍射仪分析材料微观组织,通过万能试验机与维氏硬度计分析材料力学特性。结果显示:冷轧处理前材料为固溶态组织,基本不存在错位现象;随着冷轧变形量提升,材料的错位现象持续加剧,且呈现出均匀分布的趋势。随着冷轧变形量提升,材料的晶粒尺寸逐渐减小,晶界密度增加;同时材料的抗拉强度、屈服强度和硬度也逐渐提高,拉伸率逐渐下降。
Cold rolling deformation is an important step in the deformation application process of aluminum matrix composites.In order to improve the application performance of aluminum matrix composites,2519 aluminum alloy is used as a metal substrate to prepare aluminum matrix composites.With the application of hot deformation extrusion and cold rolling treatment,six cold rolling deformation amounts are obtained.Analyze the microstructure of the material using transmission electron microscopy and X-ray diffraction,and analyze the mechanical characteristics of the material using a universal testing machine and a Vickers hardness tester.The results show that the material before cold rolling treatment has a solid solution structure,and there is basically no dislocation phenomenon.As the cold rolling deformation increases,the dislocation phenomenon of the material continues to intensify and shows a trend of uniform distribution.As the cold rolling deformation increases,the grain size of the material gradually decreases and the grain boundary density increases;At the same time,the tensile strength,yield strength,and hardness of the material gradually increase,while the tensile rate gradually decreases.
作者
雷武军
LEI Wujun(Sichuan Tranvic Co.,Ltd.,Chengdu 610100,Sichuan,China)
出处
《金属功能材料》
CAS
2023年第5期89-94,共6页
Metallic Functional Materials
关键词
冷轧变形量
铝基复合材料
微观组织
力学性能
晶粒尺寸
抗拉强度
cold rolling deformation
aluminum matrix composite
microstructure
mechanical properties
grain size
tensilestrength
作者简介
雷武军(1977-),男,大学本科,高级工程师,E-mail:ndumjiaojh@163.com。
