Effect of Solution Treatment on Recrystallization,Texture and Mechanical Properties of 7A65-T74 Aluminum Alloy Super-thick Hot Rolled Plate

作     者：LI Chen WANG Hao WANG Wenbo YE Chengtong JIN Zuheng ZHANG Xinquan ZHANG Hu JIA Lina 李晨;王昊;WANG Wenbo;YE Chengtong;JIN Zuheng;ZHANG Xinquan;ZHANG Hu;贾丽娜

作者机构：The First Aircraft of Institute of AVICXi’an 710000China Department of Materials Science and EngineeringBeihang UniversityBeijing 100191China Research Center for Lightweight MaterialsNingbo Institute of TechnologyBeihang UniversityNingbo 315100China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2022年第37卷第3期

页      面：460-469页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Southwest Aluminum Co.LTD(No.JZKG20190099) 

主　　题：7A65 thick plate solid solution treatment texture recrystallization anisotropic 

摘      要：The effects of the solution treatment on the microstructure,recrystallization,texture composition and properties of 7A65-T7451(120 mm)hot rolled plates at H/2(1/2 thickness)and H/4(1/4 thickness)were *** results show that the hot rolled microstructure mainly contains a large amount of MgZn_(2) phases and minor Al_(7)Cu_(2)Fe *** solid solution treatments,a large amount of MgZn_(2) phases are dissolved back into the aluminum *** main texture types at H/4 are R-Cube,Cube and part of Brass texture,and the main texture types at H/2 are Cube,R,and Copper *** qualitative analysis by Schmidt s law reveals that Copper texture at H/2 will deepen the anisotropy of plate metal *** the plate with the same thickness,the two-stage solution state has better mechanical properties due to the lower degree of recrystallization and stronger grain boundary strengthening *** the two-stage solution system of 460℃/165 min+477℃/165 min,the composite mechanical properties of the alloy plate at H/4 are the best and the anisotropy is not *** tensile strength,yield strength,and elongation along the rolling direction are 561.9 MPa,523.4 MPa,and 10.6%,respectively..