Microstructure and texture evolution of Cu–Cr–Co–Ti alloys during the two-stage cryorolling

作     者：Jia-Jun Zhang Long-Jian Li Zhi-Feng Liu Zong-Ning Chen En-Yu Guo Hui-Jun Kang Ren-Geng Li Tong-Min Wang 

作者机构：Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province)School of Materials Science and EngineeringDalian University of Technology Center of Hyper-Gravity Experimental and Interdisciplinary ResearchZhejiang University Ningbo Institute of Dalian University of Technology！Ningbo315000China Key Laboratory for Light-Weight MaterialsNanjing Tech University 

出 版 物：《Rare Metals》 (稀有金属(英文版))

年 卷 期：2024年第43卷第9期

页      面：4535-4547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：supported by the National Natural Science Foundation of China (Nos. 52271025, 51927801 and U22A20174) the Science and Technology Planning Project of Liaoning Province (No. 2023JH2/101700295) the Innovation Foundation of Science and the Technology of Dalian (No. 2023JJ12GX021) the Natural Science Foundation of Jiangsu Province (No. BK20200695) 

主　　题：Copper alloys Electron backscatter diffraction Macrotexture evolution Schmid factor Two-stage cryorolling 

摘      要：This study entailed an investigation of the mechanical properties, microstructural and texture orientation evolutions of CuDCrDCoDTi alloys prepared via twostage cryorolling and intermediate aging treatment. To this end, X-ray diffraction and electron backscatter diffraction were employed. The results indicate that the two-stage cryorolling and intermediate aging treatments led to the development of profuse twin bundles and significantly enhanced the mechanical properties. The initial cryorolling led to coplanar slip and developed a strong Y({111} ) orientation, accelerating the formation of Goss({011} ) orientation and a Brass-type *** intermediate aging treatment relieved the restriction on dislocation slip and reoriented the grains toward the Copper({112} ) and Z({111} ) *** Z orientation, with a relatively high volume fraction,dominated the macrotexture. Secondary cryorolling intensified twinning and shear banding, transforming the Copper-type shear bands into Brass-type shear bands with rhomboidal prism morphology. The areas inside the Brasstype shear bands exhibited a Y orientation, and the areas outside the shear bands exhibited a stable Brass-type texture. The evident decrease in the weighted Schmid factors demonstrated that the two-stage cryorolling and intermediate aging treatment can modify the texture evolution and aid the design of high-performance Cu alloys.