A kind of wc/fe composite material and preparation method thereof

Abstract

The invention discloses a WC / Fe composite material and a preparation method thereof. WC powder, Fe powder, graphite, Cu powder, Mn powder and Ni powder are used as raw materials, and the mass ratio of each component in the raw material is as follows: WC powder: 20 ~50%, graphite powder: 0.1~1%, Cu powder: 0.5~1.5%, Mn powder: 1~8%, Ni powder 5~10%, the balance is iron powder; after weighing, ball milling, drying and molding prepared by sintering. The invention adds Mn and Ni alloying elements into the matrix alloy components, and utilizes the solid solution strengthening effect of the alloying elements to change the matrix structure and performance of the composite material, thereby realizing the improvement of the overall performance of the composite material. The invention promotes the formation of tungsten carbide by adding Ni element, improves the shape of the composite material, can also optimize the interface between the matrix and WC particles, forms austenite around the WC particles, and effectively prevents cracks from expanding.

Description

A kind of WC / Fe composite material and preparation method thereof technical field The present invention relates to metal matrix composite material technical field, more particularly, relate to a kind of WC / Fe composite material and its preparation preparation method. Background technique [0002] Tungsten carbide (WC) is a high-hardness, high-wear-resistant material, and an iron (Fe)-based composite material obtained as a reinforcing phase, In theory, it has excellent wear resistance and can improve the service life of the material, which has become the key to the urgent need of wear-resistant parts. material with broad application prospects. Preliminary research results of WC / Fe composites show that the hardness and strength of composites are higher than those of composites. The test results of wear resistance and wear resistance are obviously lower than the theoretical expected value. During the friction process of WC / Fe composites, the WC particles Protects the ...

AI Technical Summary

Problems solved by technology

The above-mentioned technical solution is low in cost and improves the wear resistance of the mechanical properties of the iron-based alloy; however, the structure and surface of the composite material do not change, and the improvement of the overall performance of the composite material is limited.