Plasma Nitriding of Low Alloy Sintered Steels
来源期刊：材料热处理学报2004年第5期
论文作者：Fakhreddin Ashrafizadeh Tom Bell Xiao-Ying Li Shiva Mansoorzadeh
关键词：sintered steel; manganese; plasma nitriding;
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.
Fakhreddin Ashrafizadeh1，Tom Bell2，Xiao-Ying Li2，Shiva Mansoorzadeh1
(1.Department of Materials Engineering, Isfahan University of Technology Isfahan, Iran;
2.School of Engineering, Metallurgy and Materials, The University of Birmingham, Birmingham, UK)
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.
关键词:sintered steel; manganese; plasma nitriding;
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