Effect of hybrid reinforcement on microstructure and mechanical properties of AZ61 magnesium alloy processed by stir casting method

被引：57

作者：

Huang, Song-Jeng ^{[1
]}

Subramani, Murugan ^{[1
]}

Chiang, Chao-Ching ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, 43,Sect 4,Keelung Rd, Taipei 10607, Taiwan

来源：

COMPOSITES COMMUNICATIONS | 2021年 / 25卷

关键词：

AZ61; alloy; Hybrid composites; Microstructure; Mechanical properties; BEHAVIOR;

D O I：

10.1016/j.coco.2021.100772

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this present study, AZ61 magnesium alloys reinforced with a low weight fraction of alumina (Al2O3: 2 wt %) and silicon carbide (SiC: 0.5, 1, 1.5 wt %) nanoparticle hybrid composites were fabricated using the gravitating mechanical stir casting (GMSC) method. The microstructure analysis reveal a monolithic alloy structure composed of alpha-Mg grains with intermetallic secondary (beta-Mg17Al12) phases uniformly distributed at the grain boundaries. The addition of reinforcements to the monolithic alloy reduces their mean size and leads to a breaking down of the beta-Mg17Al12 phases from round to needle like in shape. The hardness, tensile and compressive strength results show a direct relationship with the SiC reinforcement contents, the maximum values obtained the addition being 1 wt% SiC along with AZ61+2 wt%Al2O3 hybrid composite.

引用

页数：7

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