Effect of RE Yttrium on Microstructure and Mechanical Properties of FAC/AZ91D Composites

Li Fanguo; Yu Sirong; Chu Hongchao; Yuan Ming; Liu Enyang; Wang Jiexia

doi:10.15980/j.tzzz.2016.12.022

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Effect of RE Yttrium on Microstructure and Mechanical Properties of FAC/AZ91D Composites
Vol. 36, Issue 12, Pages: 1319-1322(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.12.022

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[1]李凡国,于思荣,初宏超,袁明,刘恩洋,汪洁霞.稀土Y对漂珠/AZ91D复合材料组织和力学性能的影响[J].特种铸造及有色合金,2016,36(12):1319-1322.

Li Fanguo, Yu Sirong, Chu Hongchao, et al. Effect of RE Yttrium on Microstructure and Mechanical Properties of FAC/AZ91D Composites. [J]. Special Casting & Nonferrous Alloys 36(12):1319-1322(2016)
[1]李凡国,于思荣,初宏超,袁明,刘恩洋,汪洁霞.稀土Y对漂珠/AZ91D复合材料组织和力学性能的影响[J].特种铸造及有色合金,2016,36(12):1319-1322. DOI： 10.15980/j.tzzz.2016.12.022.

Li Fanguo, Yu Sirong, Chu Hongchao, et al. Effect of RE Yttrium on Microstructure and Mechanical Properties of FAC/AZ91D Composites. [J]. Special Casting & Nonferrous Alloys 36(12):1319-1322(2016) DOI： 10.15980/j.tzzz.2016.12.022.

摘要

为了弥补AZ91D镁合金结构件强度和硬度不足等缺点

以AZ91D合金为基体

添加漂珠和稀土Y

制备出新型的漂珠/AZ91D复合材料。利用光学显微镜、X射线衍射仪、维氏硬度计、压缩试验机

研究了稀土Y对复合材料组织和性能的影响。结果表明

在复合材料中添加稀土Y后

显微组织得到明显细化

同时Mg2Si相由网状变成块状;稀土Y和漂珠对复合材料硬度的提高都有促进作用;在漂珠/镁合金复合材料中添加适量的稀土Y可提高其抗压强度。

Abstract

In order to improve strength and hardness of the magnesium alloy structural parts

through taking AZ91 Dalloy as the matrix

adding fly-ash cenosphere（FAC）and rare earth Y

a new FAC/magnesium alloy composites was prepared.Effects of Y on microstructure and mechanical properties of FAC/AZ91 Dcomposites prepared were investigated by means of optical microscope

XRD

Vickers hardness testing and compressive testing.The results show that the microstructure is refined obviously with Y addition

and the Mg2 Si phase is transformed from network structure to bulky one.Addition of Y and FAC can improve hardness of the composite.In addition

Addition of Y can increase the compressive strength of FAC/AZ91 Dcomposites.