初始温度对低温轧制az31镁合金组织和性能的影响

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materiali in tehnologije Pub Date : 2022-10-06 DOI:10.17222/mit.2022.443

Zhenyu Wu, Chenchen Zhi, Lifeng Ma, Z. Zheng, Yanchun Zhu, Weitao Jia

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引用次数: 1

摘要

通过对AZ31双铸轧薄板低温轧制后的性能进行表征，研究了初始温度对低温轧制薄板组织和力学性能的影响。结果表明:当初始温度为室温时，由于显微组织中存在大量位错，合金的硬度最大;在初始温度为200℃时，屈服强度和伸长率最高，显微组织以细小等轴晶为主。随着初始温度的升高，晶粒逐渐增大，屈服强度和延伸率逐渐降低。屈服强度和伸长率总体呈先升高后降低的趋势。根据不同初始温度处理的结果，在初始温度为200℃时，AZ31镁合金的组织和性能达到最佳。

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EFFECT OF INITIAL TEMPERATURE ON THE MICROSTRUCTURE AND PROPERTIES OF CRYOGENIC ROLLED AZ31 MAGNESIUM ALLOY

By characterizing the properties of a twin cast-rolled AZ31 sheet after cryogenic rolling, the effects of the initial temperature on the microstructure and mechanical properties of the sheet obtained by cryogenic rolling were studied. The results indicate that the hardness of the alloy was a maximum due to the high-density dislocations in the microstructure when the initial temperature was room temperature. The highest yield strength and elongation appeared at the initial temperature of 200 °C, and the microstructure was mainly fine equiaxed grains. It was observed that fine grains increased, and the yield strength and elongation gradually decreased with the increase of the initial temperature. The overall trend of yield strength and elongation increased first and then decreased. Based on the results of different initial temperature treatments, the optimal microstructure and properties of AZ31 magnesium alloy were acquired when the initial temperature was 200 °C.

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.