热处理温度对高钒高速钢显微组织和硬度的影响
Effect of Heat Treatment Temperature on Microstructure and Hardness of High Vanadium High Speed Steel
摘 要
研究了淬火温度和回火温度对高钒高速钢显微组织和硬度的影响.结果表明:在空冷条件下,当淬火温度低于1 040 ℃时,随着淬火温度的升高,钢的硬度逐渐升高;超过1 040 ℃后,随着淬火温度的升高,其硬度又逐渐降低;同时随着淬火温度的升高,钢中碳化物的数量逐渐减少,马氏体不断粗化,而残余奥氏体含量逐渐增加;在1 040 ℃淬火后,当回火温度低于500 ℃时,钢的硬度变化不明显;超过500 ℃后随着回火温度的升高,其硬度先升高,并在520 ℃时达到最高值,此后钢的硬度又逐渐降低;随着回火温度的升高,马氏体中弥散析出的碳化物数量逐渐增加并聚集长大,同时马氏体和部分残余奥氏体转变为回火马氏体.
显微组织
硬度
热处理
high vanadium high speed steel
microstructure
hardness
heat treatment
Abstract
The effects of quenching temperature and tempering temperature on the microstructure and hardness of high vanadium high speed steel(HVHSS) were investigated.The results show that with the increase of quenching temperature,the hardness of the steel first increased when the quenching temperatuive lower than 1 040 ℃ and then decreased when the quenching temperature higher than 1 040 ℃.With the increase of quenching temperature,carbide in the microstructure decreased,martensite became coarsing and residual austenite increased.With the increase of tempering temperature,the hardness of the steel had no obvious change when the tempering temperature lower than 500 ℃,but when the tempering temperature higher than 500 ℃,the hardness first increased and then decreased and reached a peak value at 520 ℃.With the increase of tempering temperature,disperse carbides precipitated from the martensite gradurally and grew up together,and at the same time martensite and partial residual austenite transformed into tempered martensite.
中图分类号 TG146.1
所属栏目 材料性能及其应用
基金项目 科技部“中小企业技术创新基金”资助项目(07C26215110842)
收稿日期 2008/5/7
修改稿日期 2008/10/16
网络出版日期
作者单位点击查看
备注李萍(1981-),女,陕西韩城人,硕士研究生.
引用该论文: LI Ping,DU Zhong-ze,FU Han-guang,FENG Zhen-jun. Effect of Heat Treatment Temperature on Microstructure and Hardness of High Vanadium High Speed Steel[J]. Materials for mechancial engineering, 2009, 33(6): 93～95
李萍,杜忠泽,符寒光,丰振军. 热处理温度对高钒高速钢显微组织和硬度的影响[J]. 机械工程材料, 2009, 33(6): 93～95
被引情况:
【1】李日良,岑启宏,蒋业华,李祖来, "铸态中碳高硼合金钢的三体磨料磨损特性",机械工程材料 37, 63-67(2013)
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参考文献
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【2】KIM C K,PARK J I,LEE S,et al.Effects of alloying elements on microstructure hardness and fracture toughness of centrifugally cast high-speed steel rolls[J].Metallurgical and Materials Transactions,2005,A36 (1):87-97.
【3】WEI Shi-zhong,ZHU Jin-hua,XU Liu-jie,et al.Effects of carbon on microstructures and properties of high vanadium high-speed steel[J].Mater Design,2006(1):58-63.
【4】CHAUS A S.Modifying cast tungsten-molybdenum high-speed steels with niobium zirconium and titanium[J].Metal Science and Heat Treatment,2005,47(1):53-61.
【5】XUA Liu-jie,XING Jian-dong,WEI Shi-zhong,et al.Study on relative wear resistance and wear stability of high-speed steel with high vanadium content[J].Wear,2007:253-261.
【6】符寒光,邢建东.高速钢轧辊制造技术[M].北京:冶金工业出版社,2007.
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