PRODUCTION AND CHARACTERIZATION OF ALUMINUM BASED COMPOSITES BY POWDER METALLURGY METHOD FOR DIFFERENT MATRIX COMPOSITION AND AMOUNTH OF THE REINFORCEMENT

Abstract

In this study, effect of the different matrix composition and amounth of the boron carbide (B4C) reinforcment on the microstructure, mikrohardness and theoretical density were examined at aluminum based composites produced by powder metallurgy (P/M) method. For this purpose, three different matrix compositions (Al5Cu, Al5Mg and Al2.5Cu.2.Mg) and four different amount of the B4C by weight (% 5, 10, 20 and 30) were used. In addition to this, in order to investigate the effect of the production conditions, two different pressure (200 and 400 MPa) and three different sintering periods (60, 120 and 240 min.) were used. The theoretical density and microhardness of the produced aluminum based composites were measured and microstructure characterization was achieved via optic microscope

Keywords

• powder metallurgy, sintering, boron carbide, aluminum

FARKLI MATRİS KOMPOZİSYONLARI VE TAKVİYE ORANLARI İÇİN ALÜMİNYUM ESASLI KOMPOZİTLERİN TOZ METALURJİSİ YÖNTEMİYLE ÜRETİMİ VE KARAKTERİZASYONU

Abstract

FARKLI MATRİS KOMPOZİSYONLARI VE TAKVİYE ORANLARI İÇİN ALÜMİNYUM ESASLI KOMPOZİTLERİN TOZ METALURJİSİ YÖNTEMİYLE ÜRETİMİ VE KARAKTERİZASYONU

  

Bu çalışmada, toz metalurjisi (T/M) yöntemiyle üretilen alüminyum esaslı kompozitlerde farklı matris kompozisyonlarının ve bor karbür (B4C) takviye oranlarının mikroyapı, mikrosertlik ve teorik yoğunluğa etkisi incelenmiştir. Bu amaçla, üç farklı matris kompozisyonu (Al5Cu, Al5Mg ve Al2.5Cu.2.Mg) ve ağırlıkça dört farklı B4C (% 5, 10, 20 ve 30) oranı kullanılmıştır. Ayrıca üretim şartlarının etkisinin incelenebilmesi amacıyla iki farklı basınç (200 ve 400 MPa) kullanılmıştır. Numuneler atmosferik gaz ortamında üç farklı sinterleme süresinde (60, 120 ve 240 dk.) sinterlenmiştir. Üretilen alüminyum esaslı kompozitlerin teorik yoğunluk, mikrosertlik değerleri ölçülmüştür ve optik mikroskop yardımıyla mikroyapı karakterizasyonu gerçekleştirilmiştir.

 

PRODUCTION AND CHARACTERIZATION OF ALUMINUM BASED COMPOSITES BY POWDER METALLURGY METHOD FOR DIFFERENT MATRIX COMPOSITION AND AMOUNTH OF THE REINFORCEMENT

 

In this study, effect of the different matrix composition and amounth of the boron carbide (B4C) reinforcment on the microstructure, mikrohardness and theoretical density were examined at aluminum based composites produced by powder metallurgy (P/M) method. For this purpose, three different matrix compositions (Al5Cu, Al5Mg and Al2.5Cu.2.Mg) and four different amount of the B4C by weight (% 5, 10, 20 and 30) were used. In addition to this, in order to investigate the effect of the production conditions, two different pressure (200 and 400 MPa) and three different sintering periods (60, 120 and 240 min.) were used. The theoretical density and microhardness of the produced aluminum based composites were measured and microstructure characterization was achieved via optic microscope.

 

 

Keywords

• Toz metalurjisi, sinterleme, bor karbür, alüminyum

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