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Effect of \(\left\{ {10\bar 12} \right\}\) extension twins on microstructure enhancement of Mg-3Al-1Zn alloy in half channel angular extrusion

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Abstract

This paper mainly concerns the enhancement of the microstructure and mechanical properties of the Mg-3Al-1Zn rolled sheet alloy in the half channel angular extrusion (HCAE) process, linking with effects of the starting texture and \(\left\{ {10\bar 12} \right\}\) extension twin. The initial HCAE specimens are prepared by imposing the caxis compression of 5% along the rolling direction to the Mg-3Al-1Zn sheet. They were applied in the HCAE process at the forming temperature of 523 K to make the enhanced microstructure named after HCAE-It, IIt, IIIt according to different starting textures. Improved mechanical properties and homogeneous grain structure with enhanced elongation can be achieved by the specific starting texture (HCAE-It) rather than the effect of the induced \(\left\{ {10\bar 12} \right\}\) extension twins in the initial specimen.

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Authors and Affiliations

  1. School of Mechanical and Automotive Engineering, Kyungil University, Gyeongsan-si, Gyeongbuk, 712-701, Korea

    Kyungjin Kim

  2. Department of Mechanical Engineering, Hanyang University, 1271 Sa3-dong, Sangrok-gu, Ansan, Gyeonggi-do, 426-791, Korea

    Jonghun Yoon

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  1. Kyungjin Kim
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  2. Jonghun Yoon
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Correspondence to Jonghun Yoon.

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Kim, K., Yoon, J. Effect of \(\left\{ {10\bar 12} \right\}\) extension twins on microstructure enhancement of Mg-3Al-1Zn alloy in half channel angular extrusion. Met. Mater. Int. 21, 753–757 (2015). https://doi.org/10.1007/s12540-015-4401-2

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  • DOI: https://doi.org/10.1007/s12540-015-4401-2

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