The Influence of Inhomogeneous Deformation on the Microstructures and Properties of Thick-plate 7150 Alloy
The diversities and relations of microstructures and properties between the center and surface layer in thick-plate 7150 alloy were investigated by means of OM,TEM,SEM and tensile tests.The results indicated that the average width of elongated grains with fewer substructures in the center of hot-rolling thick plate is about 2 times larger than that in the surface layer.The coarser second phases are massed up at the grain boundaries of the center layer while those are crushed into smaller particles in the surface layer.By aging,the strengthening precipitates in the center are mainly GP zone and η phase,while in the surface layer η and η phases play the main roles.Consequently,the strength is about 80Mpa (15%) higher in the center than in the surface,with lower elongations (26% lower).
Aluminum alloy Thick-plate Deformation Precipitates Properties
Feng Zhao Lingyong Cao Yujing Lang Hua Cui Linzhong Zhuang Jishan Zhang
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing School of Materials Science and Engineering, University of Science and Technology Beijing,Xueyuan Ro
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
250-254
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）