Toz Metalurjisi Yöntemiyle Mg-Sn Alaşımı Üretimi ve Karakterizasyonu

Year 2020, Volume: 8 Issue: 1, 112 - 119, 28.01.2020

Azim Gökçe

https://doi.org/10.21541/apjes.581814

Cited By: 8

Abstract

Magnezyum alaşımları özellikle
düşük yoğunlukları ve yüksek spesifik dayanımları nedeniyle günden güne daha
geniş alanlarda kullanım imkanı bulmaktadır. Bu alaşımların endüstriyel
uygulamalarda daha yüksek oranda kullanımının önündeki en büyük engel hegzagonal
sıkı paket olan kristal kafes yapısından dolayı geleneksel yöntemlerle plastik
deformasyon işlemlerinin zor olmasıdır. Bu zorlukların üstesinden gelmek için
kullanılabilecek yöntemlerden biri toz metalurjisi (TM) ile üretimdir. Bu
çalışmada ticari olmayan bir tozmetal magnezyum alaşımı toz metalurjisi
yöntemiyle geliştirilmiş ve geliştirilen alaşımın mikroyapısal özellikleri
incelenmiştir. Çalışma sonucunda magnezyuma yapılan Sn ilavesi ile tane
boyutunda ve dolayısıyla sertlik değerlerinde yükselme tespit edilmiştir. Ayrıca
magnezyuma yapılan Sn ilavesi ile Mg₂Sn fazının oluştuğu
görülmüştür. Kalay ilavesi ile daha düşük sıcaklıklarda yapılan sinterleme
işlemlerinde yüksek yoğunluk değerlerine ulaşılabildiği tespit edilmiştir.

Keywords

Magnezyum, Toz metalurjisi, Sinterleme

Supporting Institution

Sakarya Üniversitesi Bilimsel Araştırmalar Komisyonu

Project Number

2017-09-08-014

Development and Characterization of Mg-Sn Powder Metallurgy Alloy

Abstract

Magnesium
alloys have received increasing attention due to their low density and high
specific strength. Magnesium has hexagonal closed packet crystal structure at
all temperatures and therefore it is very difficult to give shape to the
magnesium by using conventional plastic deformation methods. One of the methods
that can be used to overcome this poor deformability problem is using powder
metallurgy. In this study, a non-commercial powder metal magnesium alloy was
developed and the properties of the alloy were investigated. It has been
observed that the addition of Sn to magnesium decreased the grain size and
hence increased the hardness values. Also formation of the Mg₂Sn
phase contributed to the achievement of the higher hardness values. It was
determined that the addition of tin makes it possible to reach the higher
density values even by sintering conducted at the lower temperatures.

Keywords

Magnesium, Powder metallurgy, Sintering

Project Number

2017-09-08-014

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