An Experimental Study Of Aluminum Alloy Matrix Composite Reinforced SiC Made By Hot Pressing Method

Archives of Metallurgy and Materials

J. Karwan-Baczewska¹  M. Suśniak¹  J. Dutkiewicz²  M. Actis Grande³  M. Rosso³ 

[1] AGH- UNIVERSITY OF SCIENCE AND TECHNOLOGY IN CRACOW, FACULTY OF NON-FERROUS METAL, POLAND;POLISH ACADEMY OF SCIENCE, INSTITUTE OF METALLURGY AND MATERIALS ENGINEERING, POLAND;POLITECNICO DI TORINO, DEPARTMENT OF APPLIED SCIENCE AND TECHNOLOGY, ITALY

关键词: Keywords: Al/SiC composites;    powder metallurgy;    mechanical alloying;    hot pressing;   

DOI  :  10.1515/amm-2015-0165

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The present work investigates the possibility of using powder metallurgy processing for producing a metal matrix composite. Materials were prepared from AlSi5Cu2 chips with reinforcement of 10, 15, 20 wt. % silicon carbide. Aluminum alloy chips were milled with SiC powder in a high-energy ball mill by 40 hours. Mechanical alloying process lead to obtain an uniform distribution of hard SiC particles in the metallic matrix and refine the grain size. The consolidation of composite powders was performed by vacuum hot pressing at 450°C, under pressure of 600 MPa by 10 min. The results shows that the addition of SiC particles has a substantial influence on the microstructure and mechanical properties of composite powder as well as consolidated material. Hot pressing is an effective consolidation method which leads to obtain dense AlSi5Cu2/SiC composite with homogeneous structure and advanced mechanical properties.

【 授权许可】

Unknown