Influence of NbC Addition on the Sintering Behaviour of Medium Carbon PM Steels

Küçük Resim Yok

Tarih

2017

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Mdpi Ag

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

In this work, the effects of NbC additions on the microstructure and mechanical properties were examined. In order to do this, NbC compounds were added into the Fe matrix at the weight percentage of 0.1-2 with individually to obtain powder mixture. The microstructure of the powder metallurgy (PM) steels were characterized by optic microscope, scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). Experimental results indicated that NbC alloyed steels can be produced by PM technology. An increase in strength was observed when the amount of NbC compounds increased for all PM steels. The precipitation of carbides and nitrides in these steels limits austenite grain growth and increases the precipitation hardening or clustering hardening that results in significant improvement in strength.

Açıklama

Anahtar Kelimeler

powder metallurgy, PM steels, microstructure

Kaynak

Metals

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

7

Sayı

4

Künye