Conferences

MECHANISM FOR IMPROVING THE MECHANICAL PROPERTIES OF SINTERED IRON–COPPER COMPOSITES ALLOYED WITH MOLYBDENUM

V.Skorokhod,
  
.Panichkina,
    

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2017, #07/08
http://www.materials.kiev.ua/article/2401

Abstract

The structure of Fe–Cu composites after solid-phase and liquid-phase sintering is studied. The activating effect of 2–10 wt.% molybdenum addition on the diffusion processes during compaction, grain growth, and recrystallization, as well as on the amount and composition of copper and iron solid solutions is shown. Molybdenum alloying of 70 wt.% Fe–30 wt.% Cu composites simultaneously influences their strength and ductility properties. With increasing molybdenum content, the solubility of iron in copper decreases in the composites, thus promoting higher ductility, and the formation of copper and molybdenum solid solutions in iron retains their strength characteristics. Solid-phase sintering results in fine-grained FeCuMo samples with high relative density (up to 98.8%) and high ductility.


COPPER, HARDNESS, IRON, MOLYBDENUM, PLASTICITY, SINTERING, STRENGTH, СOMPOSITE