AZ80镁合金模锻汽车轮毂组织 与性能研究
Research on Microstructure and Properties of Az80 Alloy Forged Wheel Hub

DOI: 10.12677/AMC.2014.22003, PP. 13-20

Keywords: AZ80镁合金，模锻轮毂，微观组织，力学性能
Az80 Alloy, Forging Wheel Hub, Microstructure, Mechanical Properties

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Abstract:

本试验针对模锻AZ80汽车轮毂的轮芯、轮辐、轮缘和轮辋四个部位，分析其锻后的微观组织和力学性能。试验结果表明，经过此种模锻工艺后的汽车轮毂力学性能较成形前的AZ80镁合金有大幅度的提高，在扫描电镜下发现微观组织大量类似于珠光体构造方式的层片状组织，但经过微区成分分析，基体和片层组织的Mg、Al两种元素含量只出现了小范围波动。通过微观组织与力学性能的关系，为进一步优化工艺参数提供参考依据。

This experiment is focused on the microstructures and mechanical properties of four parts on AZ80 wheel: hub wheel core, spokes, outer rim and rim. The result shows that mechanical properties of AZ80 magnesium alloy have improved greatly after forging and a large amount of lamellar structure has been founded which is similar to the construction of pearlyte under the scanning electron microscopy. However, the elements of Mg and Al nearly keep unchanged in the EDS analysis. Studying on the relationship of microstructure and mechanical properties can provide a reference for optimizing process parameters.

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