Study on Microstructure and Properties of 6061 Al Alloy/304 Stainless Steel Multilayered Composites Based on High-Temperature Torsion Method
CHEN Yuqiang1, ZHANG Hao1, HUANG Hao2, ZHANG Wentao1, XIE Gongyuan1, LIU Wenhui1, PAN Suping3, SONG Yufeng1, LIU Yang1
1 Hunan Provincial Key Laboratory of New Energy Storage and Conversion of Advanced Materials, Hunan University of Science and Technology, Xiangtan 411201, China 2 Jianglu Machinery Electronics Group Co., Ltd, Xiangtan 411201, China 3 Advanced Research Center, Central South University, Changsha 410083, China
Abstract: Due to their excellent properties, metal multilayered composites have recently become a research hotspot in material science. In this paper, a new type of forming technique for metal multilayered composite was developed through high-temperature torsion. Using mechanical tensile test, scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and electron backscatter diffraction (EBSD) analysis, the effects of torsion processes on the microstructure and properties of 6061 Al alloy/304 stainless steel multilayered composites were studied. The results show that, the tensile strength (σth) of the composite decreases with the increase of torsion angle from 1 080° to 2 160°, while its elongation (δ) increases significantly. Keeping the torsion force for 0 min to 60 min, the σth and δ values of the composite change little, while the element diffusion at the interface become evident and the local stress concentration at the interface is released. After a 1 080° torsion, the σth and δ values of the composite are 333.4 MPa and 77.3% respectively, which are higher than their corresponding theoretical values. This is probably due to the microstructure refinement of composite during high temperature torsion and its particular screw-type structure.
作者简介: 陈宇强,男,博士,副教授,湖南科技大学材料科学与工程学院副院长,主要研究方向为铝合金加工工艺与性能、损伤机理以及微结构表征。入选湖湘青年英才支持计划、湖南省青年骨干教师、湖南省科技创新创业菁英培育计划。主持国家自然科学基金、湖南省创新创业技术投资专项、湘潭市科技创新“四个十”重大科技专项、校企合作科研项目、产学研成果转化项目等科研项目7项,获得湖南省自然科学奖三等奖一项,在Materials Science and Engineering A、Journal of Alloys and Compounds等学术刊物发表学术论文40余篇,获得授权专利10余项,软件注册权8项,担任Journal of Alloys and Compounds、Journal of Materials Science & Technology、Micro & Nano Letters等期刊审稿人。
引用本文:
陈宇强, 张浩, 黄浩, 张文涛, 谢功园, 刘文辉, 潘素平, 宋宇峰, 刘阳. 基于高温扭转方法制备6061铝合金/304不锈钢层状复合材料的组织及性能[J]. 材料导报, 2021, 35(6): 6167-6173.
CHEN Yuqiang, ZHANG Hao, HUANG Hao, ZHANG Wentao, XIE Gongyuan, LIU Wenhui, PAN Suping, SONG Yufeng, LIU Yang. Study on Microstructure and Properties of 6061 Al Alloy/304 Stainless Steel Multilayered Composites Based on High-Temperature Torsion Method. Materials Reports, 2021, 35(6): 6167-6173.
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