General Process for In Situ Formation of Iron-Matrix Surface Composites Reinforced by Carbide Ceramic

Xi Zhang; Li Sheng Zhong; Na Na Zhao; Vladimir E. Ovcharenko; Hong Wu; Yun Hua Xu

doi:10.4028/www.scientific.net/MSF.852.467

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HomeMaterials Science ForumMaterials Science Forum Vol. 852General Process for In Situ Formation of...

General Process for In Situ Formation of Iron-Matrix Surface Composites Reinforced by Carbide Ceramic

Abstract:

Ceramic particles with high hardness and thermal stability can be used to fabricate in situ carbide particulate-reinforced iron-matrix surface composites with high macro-hardness while retaining high toughness. This paper describes a general process by which in situ carbide particulate-reinforced iron-matrix surface composites with hard ceramic particles are readily formed by a novel in situ synthesis process that combines an infiltration casting process with subsequent heat treatment. The basis of our approach is integrating selected plates of different alloys that can form carbide easily into a metal matrix with a certain amount of carbon such as gray or ductile cast iron by casting to form alloy plates reinforced iron-matrix surface composites. Subsequent thermal treatment of resulting composites leads to alloy elements of plate reacting to the carbon in the matrix to form carbide particles. This approach is applicable to a wide range of materials and morphologies, and can be used in composites and machining tools, as well as in the wear-resistant component industry.