Preparation and Effect Analysis of {10–12} Extension Twins at the Edge of AZ31 Magnesium Alloy Plate

Huang, Zhiquan; Qi, Chuanlu; Zhu, Yanjun; Yang, Guowei; Lai, Hongyu; Zou, Jinchao

doi:10.1007/s12540-020-00684-y

Met. Mater. Int.

2020

DOI: 10.1007/s12540-020-00684-y

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Preparation and Effect Analysis of {10–12} Extension Twins at the Edge of AZ31 Magnesium Alloy Plate

Zhiquan Huang

Chuanlu Qi

Yanjun Zhu

et al.

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2022

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Analysis of Tensile Deformation Behavior of Rolled AZ31 Mg Alloy Subjected to Precompression and Subsequent Annealing Using DIC

Lee¹,

Kim²,

Park³

2022

Korean J. Met. Mater.

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This study investigates the effects of precompression and subsequent annealing on the tensile deformation behavior of a rolled AZ31 Mg alloy at room temperature using digital image correlation (DIC). When the as-rolled sample (AR sample) is subjected to precompresssion along the rolling direction (RD) and transverse direction (TD), the sample’s texture changes from the typical normal direction (ND)-oriented basal texture to the RD- and TD-oriented basal textures, respectively, because of the lattice reorientation by {10– 12} twinning. During tension along the RD, the AR sample and the sample precompressed along the TD and subsequently annealed at 250 o C (TDCA sample) accomodate the tensile strain via dislocation slip, resulting in high yield strengths and slip-dominant strain-hardening behaviors. In contrast, the sample precompressed along the RD and subsequently annealed at 250 o C (RDCA sample) exhibits a low yield strength and twinningdominant strain-hardening behavior, owing to the vigorous activation of {10–12} twinning during tension. DIC results reveal that in the AR sample, noticeable strain localization occurs at an early stage of tensile deformation due to the difficulty of accommodating strain along the thickness direction. In the RDCA sample, strain distribution is relatively homogeneous via {10–12} twinning, but the rapid strain hardening caused by abundant {10–12} twins causes premature crack initiation. Because the basal planes of most grains of the TDCA sample are aligned parallel to the thickness direction, the thickness strain is effectively accommodated via prismatic slip, resulting in the highest tensile elongation among the three samples.

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Analysis of Tensile Deformation Behavior of Rolled AZ31 Mg Alloy Subjected to Precompression and Subsequent Annealing Using DIC

Lee¹,

Kim²,

Park³

2022

Korean J. Met. Mater.

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show abstract

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Preparation and Effect Analysis of {10–12} Extension Twins at the Edge of AZ31 Magnesium Alloy Plate

Cited by 1 publication

References 17 publications

Analysis of Tensile Deformation Behavior of Rolled AZ31 Mg Alloy Subjected to Precompression and Subsequent Annealing Using DIC

Analysis of Tensile Deformation Behavior of Rolled AZ31 Mg Alloy Subjected to Precompression and Subsequent Annealing Using DIC

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