Farklı oranlarda CrC partikül takviyesi kullanılarak toz metalürjisi yöntemiyle üretilmiş Cu matrisli kompozit malzemelerin mikroyapı ve mekanik özelliklerinin incelenmesi

Year 2018, Volume: 22 Issue: 2, 495 - 501, 01.04.2018

Mahir Uzun , Mehmet Mehdi Münis Üsame Ali Usca

https://doi.org/10.16984/saufenbilder.335545

Cited By: 6

Abstract

 

Bu çalışmada, toz metalürjisi (T/M) yöntemi
kullanılarak farklı oranlarda CrC partikülleri, Cu matrisi içerisinde
kullanılarak Cu matrisli kompozit malzeme üretimi amaçlanmıştır. Bu amaçla Saf
Cu tozu içerisine CrC partikülleri ağırlıkça %5, %10,  %15 ve %20 olmak üzere farklı oranlarda
katılmıştır. Hazırlanan karşımlar 450 MPa basınç altında şekillendirilmiştir.
Şekillendirilen parçalar 950 ⁰C’de 60 dakika boyunca
sinterlenmiştir. Sinterleme işleminin başarısı yoğunluğun ve SEM görüntülerinin
incelenmesi ile değerlendirilmiştir. Üretilen kompozit malzemelerin mikroyapı
ve mekanik özellikleri incelenmiştir. Mikroskop incelemeleri taramalı elektron
mikroskobu (SEM) kullanılarak yapılmıştır. Yapılan SEM incelenmesinde, eş
eksenli tanelerden oluşan Cu matrisi içerisinde CrC fazının dengeli dağıldığı
gözlenmiştir. Yapılan sertlik ölçümlerinde, CrC oranı arttıkça buna bağlı
olarak sertliğin arttığı gözlenmiştir.

Keywords

bakır, kompozit, krom-karbür, sertlik

Investigation of microstructure and hardness properties of Cu matrix composite materials produced by powder metallurgy using CrC particle reinforcements at different ratios

Abstract

In
this study, it was aimed to investigate the effect of CrC particles in Cu
matrix, Cu matrix composite material production, CrC particles hardness value
of Cu matrix composites using powder metallurgy (P / M) method.. For this purpose, CrC particles in pure Cu dust were
added at different ratios of 5%, 10%, 15% and 20% by weight. The prepared samples were
stirred for 24 hours using a turbula mixer. The prepared mixtures were shaped under a pressure of 450 MPa. The
shaped parts were sintered at 950 ⁰C for 60 minutes. The actual and
theoretical densities of the sintered samples were determined The success rate of sintering was evaluated by
examining the intensity and SEM images. Microstructure and mechanical
properties of the produced composite materials were investigated. Microstructure and
hardness values of the produced composite materials were investigated. Microscope studies were performed using scanning
electron microscopy (SEM). In the SEM study, it was observed that the CrC phase
was uniformly distributed in the Cu matrix composed of coaxial grains. In the
hardness measurements made, it was observed that as the CrC ratio increased,
the hardness increased accordingly.

Keywords

copper, composite, crom-carbide, hardness

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