Plasma nitriding of low alloy sintered steels

被引：0

作者：

Mansoorzadeh, Shiva ^{[1
]}

Ashrafizadeh, Fakhreddin ^{[1
]}

Li, Xiao-Ying ^{[2
]}

Bell, Tom ^{[2
]}

机构：

[1] Dept. of Mat. Eng., Isfahan Univ. of Technol., Isfahan, Iran

[2] Sch. of Eng., Univ. of Birmingham, Birmingham, United Kingdom

来源：

Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2004年 / 25卷 / 05期

关键词：

Alloying elements - Manganese - Metallographic microstructure - Microhardness - Porosity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Fe-3Cr-0.5Mo-0.3C and Fe-3Cr-1.4Mn-0.5Mo-0.367C sintered alloys were plasma nitrided at different temperatures. Characterization was performed by microhardness measurement, optical microscopy, SEM and XRD. Both materials had similar nitriding case properties. 1.4% manganese did not change the as-sintered microstructure considerably. It was observed that monophase compound layer, γ′, formed with increasing temperature. Compound layer thickness increased with increasing temperature while nitriding depth increased up to a level and then decreased. Core softening was more pronounced at higher temperature owing to cementite coarsening.

引用

页码：325 / 329