Development of nano-ZrO2 reinforced magnesium nanocomposites with significantly improved ductility

被引：12
作者：
Hassan, S. F.
Tan, M. J.
Gupta, M.
机构：
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[2] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2007年 / 23卷 / 11期
关键词：
mg nanocomposites; nano-ZrO2; ductility; work of fracture;
D O I：
10.1179/174328407X236913
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano-ZrO2 particulates containing magnesium nanocomposites were synthesised using blend press sinter hot extrusion technique. Microstructural characterisation showed reasonably uniform distribution of reinforcement, significant grain refinement of magnesium matrix, and the presence of minimal porosity. Mechanical testing revealed that the presence of nano-ZrO2 reinforcement leads to improvement in microhardness and 0.2% yield strength, and significant increase in ductility and work of fracture of magnesium matrix. Fracture surface of Mg matrix exhibited mixed mode (brittle ductile) fracture in the cases of Mg-ZrO2 nanocomposites.
引用
收藏
页码：1309 / 1312
页数：4
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