Effect of Severe Plastic Deformation at Ambient Temperature on Microstructures and Mechanical Properties of Aluminum Alloy 2519

摘要：

　　The effect of severe plastic deformation at ambient temperature on microstructures and mechanical properties of aluminum alloy 2519 was investigated by means of tensile test,micro-hardness test,optical microscopy and scanning electron microscopy.The results showed that tensile strength of as-queched 2519 alloy was greatly enhanced to nearly 550MPa (ultimate tensile strength,UTS) and 520MPa (yield strength,YS) by severe cold rolling or equal channel angular processing (ECAP) while the elongation decreased to 5%.The 2519 alloy could obtain quite well mechanical properties as much as 80 % and 12 passes cold rolling deformation.This indicated that pre-deformation by ECAP is effective in improving the mechanical properties of 2519 alloy by grain refinement,strain aging and high density dislocations.

关键词： Equal channel angular processing Severe cold rolling Shear bands Aluminum alloy 2519

作者: Ying Liu Ruolin Cheng Jingtao Wang He Zhang Xinming Zhang

作者单位: School of Materials Science and Engineering, Nanjing University of Science and Technology,Nanjing, 2 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094,Chin School of Materials Science and Engineering, Central South University, Changsha, 410083, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 298-302

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）