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首页> 外文期刊>Materials Science and Engineering >Grain refinement and mechanical properties improvement of AZ31 Mg alloy sheet obtained by two - stage rolling
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Grain refinement and mechanical properties improvement of AZ31 Mg alloy sheet obtained by two - stage rolling

机译：两步轧制AZ31镁合金薄板的晶粒细化和力学性能的改善。

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摘要

A simple process named two - stage rolling was proposed and investigated to obtain a fine-grained microstructure of AZ31 Mg alloy sheet. The first stage rolling is deformed at 773 K with a large reduction by single pass, while the second stage process is a multi-pass warm rolling deformed at 573 K. Microstructure and texture were measured on sheets subjected to rolling experiments of different reductions, and the tensile test was also carried out. After the two-stage rolling and subsequent annealing, reductions as large as 8996 were achieved without surface cracking; the AZ31 alloy sheet exhibits a homogenous microstructure with fine grains and weak basal texture, where the final average grain size is stabilized around 3 μm; thus, it shows the high strengths and good ductility.
机译：提出并研究了一种称为两阶段轧制的简单工艺，以获得AZ31镁合金薄板的细晶粒组织。第一阶段的轧制在773 K处发生一次大的压下变形，而第二阶段的工艺是在573 K处进行的多道次热轧。在经过不同压下量的轧制实验的板材上测量了组织和织构，还进行了拉伸试验。经过两阶段的轧制和随后的退火处理后，压下率高达8996，且无表面裂纹。 AZ31合金薄板组织均匀，晶粒细小，基体组织薄弱，最终平均晶粒尺寸稳定在3μm左右。因此，它显示出高强度和良好的延展性。

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