Effects of the refining treatment on the microstructure and the mechanical properties of H13 mandrel

摘要

This study researches the effects of the refining treatment on the microstructure and the mechanical properties of H13 mandrel steel and compares these effects with those of the conventional treatment.The results indicate that both carbide particles and grains were refined,carbide particles were uniformly distributed by the refining treatment,and therefore,the strength and toughness of H13 mandrel steel were improved.Rapid cooling after the solution treatment may inhibit intra-granular precipitation of carbide particles,which is favorable to enhancing toughness.Consequently,high-performance H13 mandrel steel can be produced by proper refining treatment.