摘要
This study entailed an investigation of the mechanical properties,microstructural and texture orientation evolutions of Cu-Cr-Co-Ti 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}<112>)orientation,accelerating the formation of Goss({011}<100>)orientation and a Brass-type texture.The intermediate aging treatment relieved the restriction on dislocation slip and reoriented the grains toward the Copper({112}<111>)and Z({111}<110>)orientations.The 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.
出处
《Rare Metals》
SCIE
EI
CAS
CSCD
2024年第9期4535-4547,共13页
稀有金属（英文版）
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)。
