Rolling Texture of Cu–30%Zn Alloy Using Taylor Model Based on Twinning and Coplanar Slip

Crystals

Huang-Jun Chen¹  Jui-Chao Kuo¹  Shih-Chieh Hsiao¹  Ping-Yin Hsieh¹  Sin-Ying Lin¹ 

[1] Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan;

关键词: brass-type shear band;    twin–matrix lamellae;    coplanar slip;    Taylor model;    Cu–Zn alloy;    cold-rolling texture;   

DOI  :  10.3390/cryst11111351

来源: DOAJ

【 摘 要 】

A modified Taylor model, hereafter referred to as the MTCS (Mechanical-Twinning-with-Coplanar-Slip)-model, is proposed in the present work to predict weak texture components in the shear bands of brass-type fcc metals with a twin–matrix lamellar (TML) structure. The MTCS-model considers two boundary conditions (i.e., twinning does not occur in previously twinned areas and coplanar slip occurs in the TML region) to simulate the rolling texture of Cu–30%Zn. In the first approximation, texture simulation using the MTCS-model revealed brass-type textures, including Y{1 1 1} <1 1 2> and Z{1 1 1} <1 1 0> components, which correspond to the observed experimental textures. Single orientations of C$\left(1 1 2\right)\left[\overline{1} \overline{1} 1\right]$ and S’$\left(1 2 3\right)\left[\overline{4} \overline{1} 2\right]$ were applied to the MTCS-model to understand the evolution of Y and Z components. For the Y orientation, the C orientation rotates toward T(5 5 2)[1 1 5] by twinning after 30% reduction and then toward Y(1 1 1)[1 1 2] by coplanar slip after over 30% reduction. For the Z orientation, the S’ orientation rotates toward T’$\left(3 2 1\right)\left[2 \overline{1} \overline{4}\right]$ by twinning after 30% reduction and then toward Z$\left(1 1 1\right)\left[1 0 \overline{1}\right]$ by coplanar slip after over 30% reduction.

【 授权许可】

Unknown