摘要
本文研究了低合金高速钢 W3Mo2Cr4VSi 的显微组织和力学性能,讨论了该钢的性能、成分和组织之间的关系。结果表明:该钢主要依靠 MC 型碳化物产生二次硬化;在600℃以下,其力学性能和 M2高速钢相当,具有良好的强度、硬度和韧性的配合。
Microstructures and mechanical properties of a low alloyed high speed steelW3Mo2Cr4VSi have been investigated,and relationships among the compositon,themicrostructures and mechanical properties are discussed in detail.The experimental resultsshow that the MC-type tempering precipitates are responsible for secondary hardening ofsteel W3Mo2Cr4VSi,and its various mechanical properties below 600℃ are approximatelythe same as steel M2.The retained austenite in the new steel,however,is more stable thanthat in steel M2.
关键词
低合金
高速钢
组织
性能
high speed steel
tool steel
secondary hardening
tempered
silicon
