Effect of alloy elements on properties of iron-base hardfacing alloy

A kind of iron-base hardfacing alloy for carbon arc welding was developed, which is Cr -B-Ni -W-V poly-elements strengthening alloy system.The paper has studied the performance of grinding wear-resistant by analyzing the average degree of hardness, the abrasion weight loss and microstructure of deposited metal, and discussed the effect of alloy elements on the overlay' s structure, degree of hardness and ability of wear-resistant, such as Cr, B, Ni, W, V.The best composition of the alloy system was confirmed.The results show that the mixture ratio of hardfacing alloy is suitable, and the hardness and wearing resistance of overlay is better when Cr content is 24.5%-25.5%, B content is 1.30%-1.40%, W content is 3.9%-4.2%, V content is 3.0%-3.2%.