Abstract
The development of wear-resistant materials with excellent properties is of great research value in the manufacturing industry. In this paper, a new kind of low-vanadium wear-resistant alloy was designed and characterized to unveil the influence of vanadium content coupling with heat treatment on the microstructure, hardness, and abrasive wear property. The performances of commercial high chromium cast iron (HCCI) and the new low-vanadium wear-resistant alloy are compared. The alloy with 3 wt.% vanadium quenched at 900 °C and tempered at 250 °C, possessing VC, Mo2C, and M7C3 distributed in the martensite matrix, displayed a wear resistance two times better than the HCCI. The results showed that the increase of vanadium content from 0.98 wt.% to 3.00 wt.% resulted in a decrease in the size of M7C3 and a more homogeneous distribution of M7C3. VC with a bimodal distribution is effective for impeding grooving or indenting by abrasives because of their high hardness, which plays a vital role in improving the wear resistance of low-vanadium wear-resistant alloy.
Highlights
Wear-resistant materials are important consumables in the manufacturing industry and are widely used in mining, metallurgy, and cement industries [1,2,3]
The mass fraction of VC can be obtained by the mass fraction of V in the alloy because vanadium exists in the alloy in the form of vanadium carbide
4 o of V in the alloy because vanadium exists in the alloy in the form of vanadium carbi The density of VC is about 5.8 g/cm3 according to PDF#65-8074
Summary
Wear-resistant materials are important consumables in the manufacturing industry and are widely used in mining, metallurgy, and cement industries [1,2,3] An assortment of these parts includes: construction and mining machinery parts (excavators’ teeth and teeth covers) and parts of grinders and mills for stone, ore, coal, and minerals (balls, hammers, impact plates, mill linings, and separation grids, etc.). The performance of wear-resistant materials needs to be improved to meet the service life requirements of large-scale equipment. Otherwise it will result in large consumption of wear-resistant materials, low equipment operation efficiency, and high production costs, which severely restrict the development of equipment manufacturing in the direction of large-scale, high-efficiency, and continuity. Improving the service life of wear-resistant materials has become one of the important tasks for improving the overall competitiveness of the manufacturing industry [6,7,8,9]
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