钒-铌微合金化对铬-镍-钼系重载齿轮钢性能的影响
Effect of Vanadium-niobium Microalloying on Properties of Cr-Ni-Mo Heavy-duty Gear Steel
摘 要
对铬-镍-钼系重载齿轮钢进行钒-铌微合金化处理,并对比了微合金化处理前后的淬火与渗碳组织及其性能.结果表明:经过钒-铌微合金化处理后,该钢的奥氏体晶粒得到显著细化:伴随着晶粒的细化,其冲击吸收功得到较大幅度的提高:在渗碳温度范围内长时间保温时不会发生奥氏体晶粒的异常长大:晶粒细化也使其渗碳层的组织和性能得到改善.
微合金化
奥氏体晶粒
渗碳
heavy-duty gear steel
microalloying
austenite grain
carburizing
Abstract
Cr-Ni-Mo heavy-duty gear steel was microalloyed with vanadium and niobium,and the microstructure after quenching and carburizing as well as mechanical properties before and after microalloying were compared.The austenite grains of the test steel are significantly refined after the microalloying process.The impact energy is also increased with the decrease of the austenite grain size.The vanadium/niobium microalloyed steel do not show abnormal coarsening of austenite grains when it was austenitized in the temperature range of carburization for a long time,and the mechanical properties of the carburizing phase are also improved.
中图分类号 TG142.1
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收稿日期 2006/7/3
修改稿日期 2006/10/31
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备注张文汉(1977-),男,湖北天门人,硕士研究生.
引用该论文: ZHANG Wen-han,WANG Mao-qiu,SHI Jie,HUI Wei-jun,DONG Han,WU Run. Effect of Vanadium-niobium Microalloying on Properties of Cr-Ni-Mo Heavy-duty Gear Steel[J]. Materials for mechancial engineering, 2007, 31(6): 30～33
张文汉,王毛球,时捷,惠卫军,董瀚,吴润. 钒-铌微合金化对铬-镍-钼系重载齿轮钢性能的影响[J]. 机械工程材料, 2007, 31(6): 30～33
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参考文献
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