EFFECTS OF RARE EARTH ELEMENTS ON THE CHARACTERISTICS OF AUTO-TEMPERING AND DECOMPOSITION OF MARTENSITE FOR A LOW CARBON Si-Mn-V STEELS
来源期刊：JOURNAL OF RARE EARTHS1990年第4期
论文作者：王笑天 姚引良 邵潭华
文章页码：286 - 290
摘 要：<正> The effect of rare earth metals（REM）on the characteristics of auto-tempering and decomposition ofmartensite for low-carbon and low-alloy steels（20SiMn2V and 20SiMn2VRE）was investigated usingTEM,dilatometer and microhardness test.Results show that both ε.and θ carbides,during auto-tempering,may precipitate from the low-carbon martensite matrix at the same time in the 20SiMn2V steel,however,theprecipitation of the ε-carbides can be inhibited by the REM contained in the 20SiMn2 VRE steel,resulting inchange of the type of precipitated carbides and decrease of the extent of auto-tempering.The“in-situ”ob-servations show that the decomposition of martensite is also inhibited by the REM contained in the20SiMn2 VRE steel during low temperature tempering.
王笑天，姚引良，邵潭华
摘 要：<正> The effect of rare earth metals（REM）on the characteristics of auto-tempering and decomposition ofmartensite for low-carbon and low-alloy steels（20SiMn2V and 20SiMn2VRE）was investigated usingTEM,dilatometer and microhardness test.Results show that both ε.and θ carbides,during auto-tempering,may precipitate from the low-carbon martensite matrix at the same time in the 20SiMn2V steel,however,theprecipitation of the ε-carbides can be inhibited by the REM contained in the 20SiMn2 VRE steel,resulting inchange of the type of precipitated carbides and decrease of the extent of auto-tempering.The“in-situ”ob-servations show that the decomposition of martensite is also inhibited by the REM contained in the20SiMn2 VRE steel during low temperature tempering.
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