微合金化元素Nb对高碳钢组织和性能的影响  

The Effect of Micro-alloying Element Nb on the Microstructure and Mechanical Properties of High Carbon Steel

作　　者：孙曼丽[1,2] 江波[1,2] 陈刚[1,2] 方金凤[1,2] 杨丽珠[1,2] 钟斌[1,2] 

机构地区：[1]高性能轨道交通新材料及安全控制安徽省重点实验室 [2]马鞍山钢铁股份有限公司

出　　处：《安徽冶金》2015年第2期36-39,共4页Anhui Metallurgy

摘　　要：通过进行拉伸、奥氏体晶粒长大和淬透性试验,研究微合金化元素Nb对普通高碳钢组织和性能的影响。结果表明,高碳钢中加入Nb不仅有利于细化晶粒,提高奥氏体晶粒稳定性,还可在保持高碳钢强度和硬度的同时提高其塑性,另外Nb还具有改善高碳钢组织均匀性和抑制马氏体转变的作用。The effect of micro-alloying element Nb on the microstructure and mechanical properties of high carbon steel was investigated by tensile,austenite grain growth and hardenability tests.The results showed that addition of niobium is not only beneficial to grain refinement and stability of austenite grain,but also improves the plasticity while maintaining the strength and hardness of high carbon steel.Moreover,niobium can also improve the microstructure uniformity and inhibit martensitic transformation in high carbon steel.

关 键 词：高碳钢 性能 硬度 马氏体 

分 类 号：TG142.41[一般工业技术—材料科学与工程]