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王丽霞,陈兴品,谢炜,任平,梅霖.应变路径变化对纯镍组织和织构的影响[J].稀有金属材料与工程(英文),2019,48(9):3022~3028.[Wang Lixia,Chen Xingpin,Xie Wei,Ren Ping and Mei Lin.Effect of strain path change on microstructure and texture in nickel during cold rolling and annealing[J].Rare Metal Materials and Engineering,2019,48(9):3022~3028.]
Effect of strain path change on microstructure and texture in nickel during cold rolling and annealing
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Received:April 03, 2018  Revised:May 10, 2018
DOI:
Key words: Strain path  pure nickel  deformation texture  recrystallization  EBSD
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Wang Lixia,Chen Xingpin,Xie Wei,Ren Ping and Mei Lin  
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Abstract:
      The effect of strain path (unidirectional rolling and cross rolling) on microstructure and texture in deformed and recrystallized state was investigated by electron backscatter diffraction (EBSD) and X-ray diffraction (XRD). The results show that the lamellar structure is dominant in both of samples with two rolling mode, but the stored energy in the unidirectional rolled (UDR) sample is higher than that in the cross rolled (CR) sample. The deformation texture is significantly affected by the strain path. The UDR sample is characterized by the typical “copper type” rolling texture, while the CR counterpart is mainly composed of Brass (Bs) and ND-rotated Brass (BsND) texture components. In addition, the minor cube and rotated cube were found in both of deformed samples. When the two samples were simultaneously annealed at different temperatures for 1h, the different recrystallization textures were obtained. The cube texture was prevailed in the UDR sample, while the weakened fiber texture was dominant for the CR sample. In addition, the abnormal grain growth was observed in the UDR sample annealed at 800℃ for 1h, which was attributed to the formation of clustered grains with a preferred cube orientation leading to the inhomogeneous microtexture, while the cross rolling mode suppressed the occurrence of abnormal grain growth during annealing.