Effects of B₄C on mechanical properties of high carbon ferrochrome self-shielded flux-cored wire

The effect of B₄C content on microstructures, hardness and wear resistance under multi-stress were researched respectively. The results indicated that the primary carbides grew directionally and the macrohardness of hardfacing layer was increased with the increment of B₄C content.The wear resistance of hardfacing alloys presented different characteristics under different stress.When a few primary carbides had broken off, its wear resistance was better than those of hardfacing alloys which lot of primary carbides broke off.