Characterization of microstructure and properties of Al�?�Al$_3$Zr�?�Al$_2$O$_3$ composite

Bulletin of materials science

ANUP MANDAL¹  SIDDHARTHA DAS¹  KARABI DAS¹ 

[1] Department of Metallurgical & Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$Department of Metallurgical & Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, IndiaDepartment of Metallurgical & Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$

关键词: Metal matrix composite;    hardness;    wear;    scanning electron microscopy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Aluminium-based metal matrix composite strengthened by in situ Al$_2$O$_3$ and Al$_3$Zr particles were synthesized by powder metallurgy route. Phase analysis by X-ray diffraction and scanning electronmicroscopy revealed that the reaction between Al and ZrO$_2$ produced Al$_2$O$_3$ and Al$_3$Zr phases in the sintered composites. The hardness of the composite is a strong function of sintering temperature as well as the volume fraction of reinforcements. The dry sliding wear test results clearly indicated that increasing the volume fraction of zirconia particles in the compositeimproved the wear resistance. Microcutting, ploughing, delamination and oxidation were the main mechanisms of wear.

【 授权许可】

Unknown