Powder Metallurgy Processing of Magnesium and Its Alloys

Yıl 2020, , 522 - 534, 31.01.2020

Azim Gökçe

https://doi.org/10.29130/dubited.569098

Cited By: 2

Öz

In this study, the usability of powder metal magnesium
alloys in industrial applications was investigated. It is well known that there
are difficulties in the plastic deformation of magnesium, due to its hexagonal
closed package crystal structure. So it is thought that powder metallurgy can
be used to overcome these aforementioned problems. Hence, the studies on the
powder metallurgy processing of magnesium alloys were compiled. The findings of
the studies on eliminating the surface oxide layer formed during the production
of magnesium particles are summarized. As a result, when more sophisticated
methods or secondary processes are used rather than press-sinter methods, it is
possible to produce Mg alloys with higher strength than that of casted
counterparts. Also, it is expected that in the near future along with the
development of new kind of particulate material processing methods  (such as selective laser sintering, direct
energy deposition) Mg alloys will be used in much greater amounts.

Anahtar Kelimeler

Magnesium, Powder Metallurgy, Sintering

Magnezyum ve Alaşımlarının Toz Metalurjisi İşlemleri

Öz

Bu çalışmada, günden güne daha geniş alanlarda kullanılan magnezyum tozmetal
alaşımların endüstriyel uygulamalarda kullanılabilirliği incelenmiştir. Bu
malzemenin hegzagonal sıkı paket kafes yapısından dolayı plastik deformasyonunda
yaşanan zorlukları aşmak için geleneksel plastik deformasyon yöntemleri yerine
toz metalurjisi yöntemi ile şekillendirilebilirliği hakkında literatürde
bulunan çalışmalar derlenmiştir. Özellikle magnezyum partiküllerinin üretimi
sürecinde oluşan yüzey oksidi tabakasının elimine edilmesi için
kullanılabilecek yöntemlerle ilgili çalışmaların bulguları özetlenmiştir. Sonuç
olarak press-sinter yöntemine göre daha sofistike yöntemler veya ikincil
işlemler kullanılması durumunda döküm alaşımlarına göre daha yüksek dayanım
gösteren Mg alaşımlarının üretiminin mümkün olduğu ve gelişen partikül malzeme
üretim yöntemleri (Seçici lazer sinterleme, direkt enerji biriktirme gibi) ile
birlikte yakın gelecekte tozmetal magnezyum alaşımlarının daha geniş alanlarda
kullanılacağı öngörülmektedir. 

Anahtar Kelimeler

Magnezyum, Toz metalurjisi, Sinterleme

Kaynakça

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