Microstructure and mechanical properties of AA7039+20%SiC<sub>w</sub> composite

Błaż, L.; Kula, A.; Kaneko, Junichi; Sugamata, Makoto; Włoch, Grzegorz; Sobota, K.

doi:10.1111/j.1365-2818.2009.03276.x

Cited by 4 publications

(1 citation statement)

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“…The process starts with mixing or mechanical alloying of aluminum (or aluminum alloy) powder with ceramic particles followed by compaction and hot pressing, sintering or hot extrusion. Addition of ceramics particles has a positive influence on grain refinement during the milling process and increases the hardness of sintered samples [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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

Suśniak¹,

Karwan-Baczewska²,

Grande³

et al. 2015

Archives of Metallurgy and Materials

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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.

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