Effect of heat treatment on phase structure and thermal conductivity of a copper-infiltrated steel

摘要: Infiltration of tool steels with copper is a suitable and cheap method to create dense parts using powder metallurgy. In this work, it shown that the network forms inside steel skeleton during infiltration enhances thermal conductivity resulting composite. The level enhancement dependent on phase volume fraction copper. Multiple heat treatments composite revealed strong dependency between solution state Fe in network. latter highly heat-treated condition multi-phase material. Using infiltration, electrical was increased from \(21.3\hbox { }50.1\,\hbox {Wm}^{-1}\, \hbox {K}^{-1}\) \(2.5\,\hbox }7.7\,{\upmu \Omega }^{-1}\, {m}^{-1},\) respectively, for aged steel-copper comparison original X245VCrMo9-4-4 steel. addition, model alloy represents copper-phase manufactured. By measuring both, bulk steel, comparing data composite, different models calculating overall are discussed.