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采用正交实验法研究了V,Cr与Mo元素的加入对Mn优化H13钢组织与硬度的影响。研究表明:V含量小于3at%时能显著降低晶界偏析并使晶粒得到细化;Cr含量为7at%~9at%的钢组织比较均匀且基体上弥散分布着细小的碳化物,其力学性能得到提高;1.5at%~3at%Mo的固溶强化能提高钢的硬度。
The effect of adding V, Cr and Mo on the microstructure and hardness of H13 steel optimized by Mn was studied by orthogonal experiment. The results show that when the content of V is less than 3at%, the grain boundary segregation can be remarkably reduced and the grains can be refined. The microstructure of the steel with the Cr content of 7at% ~ 9at% is relatively uniform and fine carbides disperse and distributed on the matrix. The mechanical properties Was increased; 1.5at% ~ 3at% Mo solution strengthening can improve the hardness of steel.