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

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外文摘要：This study entailed an investigation of the mechanical properties,microstructural and texture orien-tation evolutions of Cu-Cr-Co-Ti alloys prepared via two-stage 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 Cop-per({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 Brass-type shear bands exhibited a Y orientation,and the areas outside the shear bands exhibited a stable Brass-type tex-ture.The evident decrease in the weighted Schmid factors demonstrated that the two-stage cryorolling and interme-diate aging treatment can modify the texture evolution and aid the design of high-performance Cu alloys.

外文关键词：

Copper alloysTwo-stage cryorollingMacrotexture evolutionElectron backscatter diffractionSchmid factor

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

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作者单位：

Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China

Center of Hyper-Gravity Experimental and Interdisciplinary Research,Zhejiang University,Hangzhou 310058,China

Ningbo Institute of Dalian University of Technology,Ningbo 315000,China

Key Laboratory for Light-weight Materials,Nanjing Tech University,Nanjing 210009,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Planning Project of Liaoning ProvinceInnovation Foundation of Science and the Technology of DalianNatural Science Foundation of Jiangsu Province

项目编号：

5227102551927801U22A201742023JH2/1017002952023JJ12GX021BK20200695

出版年：

2024

DOI：

10.1007/s12598-024-02789-4

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDEI

影响因子：0.801

ISSN：1001-0521

年,卷(期)：2024.43(9)