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A study on the texture evolution mechanism of nickel single crystal deformed by high pressure torsion

Journal Article


Abstract


  • High pressure torsion (HPT) is one of the most promising severe plastic deformation (SPD) techniques to produce ultrafine-grained (UFG) or nano-grained (NG) materials via introducing very large plastic strain. This study aims to understand the texture evolution mechanism during HPT by examining the nickel single crystal. The predicted textures after different HPT rotation angles based on a three-dimensional crystal plasticity finite element method (CPFEM) model agree well with the experimental measurements. Both the modelling and experiment show that the crystallographic orientation rotates gradually towards different ideal torsion texture components during HPT deformation, and three steady-state stages and two transition stages can be divided according to the texture evolution history. The crystal rotation during HPT process has been partitioned into three components around the radial direction, tangential direction, and axial direction, respectively. The texture evolution history and mechanism have been examined and discussed in details.

Publication Date


  • 2017

Citation


  • Wei, P., Lu, C., Tieu, K., Su, L., Deng, G. & Huang, W. (2017). A study on the texture evolution mechanism of nickel single crystal deformed by high pressure torsion. Materials Science and Engineering A, 684 239-248.

Scopus Eid


  • 2-s2.0-85007273884

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/181

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 239

End Page


  • 248

Volume


  • 684

Place Of Publication


  • Netherlands

Abstract


  • High pressure torsion (HPT) is one of the most promising severe plastic deformation (SPD) techniques to produce ultrafine-grained (UFG) or nano-grained (NG) materials via introducing very large plastic strain. This study aims to understand the texture evolution mechanism during HPT by examining the nickel single crystal. The predicted textures after different HPT rotation angles based on a three-dimensional crystal plasticity finite element method (CPFEM) model agree well with the experimental measurements. Both the modelling and experiment show that the crystallographic orientation rotates gradually towards different ideal torsion texture components during HPT deformation, and three steady-state stages and two transition stages can be divided according to the texture evolution history. The crystal rotation during HPT process has been partitioned into three components around the radial direction, tangential direction, and axial direction, respectively. The texture evolution history and mechanism have been examined and discussed in details.

Publication Date


  • 2017

Citation


  • Wei, P., Lu, C., Tieu, K., Su, L., Deng, G. & Huang, W. (2017). A study on the texture evolution mechanism of nickel single crystal deformed by high pressure torsion. Materials Science and Engineering A, 684 239-248.

Scopus Eid


  • 2-s2.0-85007273884

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/181

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 239

End Page


  • 248

Volume


  • 684

Place Of Publication


  • Netherlands