AZ31镁合金单轴压缩变形机理研究

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-04-23 DOI:10.1080/02670836.2023.2200324

Xiaoyan Fang, Chen Zhou, Jinbao Lin, Wenwen Li

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引用次数: 2

摘要

通过实验和粘塑性自洽(VPSC)模型研究了室温单轴压缩AZ31合金的非基滑移和孪晶模式对挤压态力学行为和织构演变的影响。结果表明:锥体滑移和{10-11}收缩孪晶(CT)的激活可以降低压缩后期的应变硬化速率;棱柱滑移对应变硬化速率有显著影响，{10-12}扩展孪晶(ET)的激活可以显著降低应变硬化速率和抗压屈服强度。{10-11} CT活性的增加导致{0002}极图中的极密度向法向(ND)转移。

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Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

The effects of the non-basal slip and twinning modes on the mechanical behaviour and texture evolution of as-extruded AZ31 alloys during uniaxial compression at room temperature have been investigated by experiments and Visco-Plastic Self Consistent (VPSC) modelling. The results show that the activation of pyramidal slip and {10-11} contraction twinning (CT) can reduce the strain hardening rate in the later stage of compression. And the prismatic slip has a significant effect on the strain hardening rate, the activation of {10-12} extension twinning (ET) can significantly reduce the strain hardening rate and the compressive yield strength. Increased activity of the {10-11} CT causes the pole density transfer to the normal direction (ND) in the {0002} pole figure.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.