AZ31镁合金轧制变形后组织与性能研究

发布时间：2018-05-05 16:28

本文选题：AZ镁合金 + 轧制　；参考：《稀有金属材料与工程》2017年05期

【摘要】：研究了不同轧制变形量和轧制速度对AZ31镁合金板材微观组织和力学性能的影响。轧制变形可显著细化AZ31镁合金板材的晶粒尺寸并提高其综合力学性能。当轧制速度为5 m/min,轧制变形量为50%时,板材平均晶粒尺寸最细可达到9μm,其抗拉强度、屈服强度和延伸率分别提高到280、180 MPa和30%以上,同时探讨了AZ31镁合金屈服强度与晶粒大小之间的关系。在大量AZ31镁合金轧制文献数据和本实验一系列数据的基础上,对比分析了不同轧制工艺对AZ31镁合金综合力学性能的影响。研究表明,本实验所采用轧制工艺可显著提高AZ31镁合金板材的综合力学性能,同时降低板材轧向(RD)和横向(TD)的各向异性。
[Abstract]:The effect of different rolling deformation amount and rolling speed on Microstructure and mechanical properties of AZ31 magnesium alloy sheet is studied. Rolling deformation can significantly refine the grain size of AZ31 magnesium alloy sheet and improve its comprehensive mechanical properties. When the rolling speed is 5 m/min and the rolling deformation amount is 50%, the average grain size of the plate can reach 9 m, and its resistance is up to 9. The tensile strength, yield strength and elongation increase to 280180 MPa and 30% respectively. The relationship between yield strength and grain size of AZ31 magnesium alloy is discussed. On the basis of a large number of AZ31 magnesium alloy rolling documents and a series of data in this experiment, the effects of different rolling processes on the comprehensive mechanical properties of AZ31 magnesium alloys are compared and analyzed. The study shows that the rolling process in this experiment can improve the comprehensive mechanical properties of AZ31 magnesium alloy sheet and reduce the anisotropy of sheet rolling (RD) and transverse (TD).

【作者单位】：西安欧中材料科技有限公司;哈尔滨工业大学;
【分类号】：TG339

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