Powder metallurgy wear-resistant materials based on iron. I. Materials prepared by sintering and infiltration

Available information on the composition and methods of production of iron- based powder metallurgy wear-resistant materials is reviewed. It is shown t hat most developments in this field are based on the principle of obtaining wear-resistant material by the creation of a pseudoalloy with a clearly de fined heterogeneous structure, in which the microhardnesses of the base mat erial and a hard phase arc, substantially different. In addition to traditi onal methods, including pressing and sintering porous ingots and (in some c ases) infiltration with a lower melting alloy, methods bused on hot working sintered porous ingots under pressure have recently found wider applicatio n.