摘要
研究Nb元素对Cr-Ni-Mo系合金在不同渗碳热处理工艺下组织和性能的影响。结果表明,不同渗碳工艺下Nb元素对表面硬度及表面残留奥氏体含量、非马组织影响不大。但是,通过Nb元素细化晶粒的试验钢,在较长的渗碳工艺下能使得有效硬化层深加深10%且获得更细的表层马氏体片层组织。
Effect of Nb on microstructure and properties of Cr-Ni-Mo alloyed gear steel under different carburizing processes was investigated.The results show that Nb element has little influence on surface hardness,retained austenite content and non-martensite microstructure in the carburizing layer under different carburizing processes.However,the test steel with Nb element refining grain can make the effective hardening depth deepen by 10%and obtain a finer surface lamellar structure of lath martensite after a longer carburizing process.
作者
桂伟民
刘义
周根树
何亮亮
王梦梦
汤文馨
Gui Weimin;Liu Yi;Zhou Genshu;He Liangliang;Wang Mengmeng;Tang Wenxin(Shaanxi Fast Gear Co.,Ltd.,Xi'an Shaanxi 710119,China;School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an Shaanxi 710049,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第1期114-119,共6页
Heat Treatment of Metals
关键词
微合金化
Nb元素
渗碳热处理
微观组织
性能
microalloying
Nb element
carburizing heat treatment
microstructure
properties
