Effects of Rare Earth on Behavior of Precipitation and Properties in Microalloyed Steels
来源期刊：JOURNAL OF RARE EARTHS2003年第2期
论文作者：王怀斌 陈邦文 唐历 林勤 李联生 朱兴元
Key words：metal materials; microalloyed steel; precipitation; properties; rare earths;
Abstract: The influence of rare earths on the behavior of precipitation of 14MnNb,X60 and 10MnV steels was studied by STEM, XRD, ICP and thermal simulation method. The main carbonitride precipitates are Nb(C, N),(Nb, Ti)(C, N)and V(C, N). In austenite RE delays the beginning of precipitation, and decreases the rate of precipitation. In ferrite RE promotes precipitation and increases the amount of equilibrium carbonitride precipitation. RE can make precipitates fine, globular and dispersed in the microalloyed steels. With the increase of the amount of RE in steel, the amount of precipitation increases. The promotion effect is weakened with excessive RE. RE has only little influence on the strength of microalloyed steel, but it can improve impact toughness effectively.
王怀斌1，陈邦文2，唐历1，林勤3，李联生3，朱兴元2
(1.Panzhihua Iron and Steel (Group;
2.National Enterprise Technology Center,Wuhan Iron and Steel (Group;
3.Department of Physical Chemistry,University of Science and Technology Beijing, Beijng 100083,China)
Abstract:The influence of rare earths on the behavior of precipitation of 14MnNb,X60 and 10MnV steels was studied by STEM, XRD, ICP and thermal simulation method. The main carbonitride precipitates are Nb(C, N),(Nb, Ti)(C, N)and V(C, N). In austenite RE delays the beginning of precipitation, and decreases the rate of precipitation. In ferrite RE promotes precipitation and increases the amount of equilibrium carbonitride precipitation. RE can make precipitates fine, globular and dispersed in the microalloyed steels. With the increase of the amount of RE in steel, the amount of precipitation increases. The promotion effect is weakened with excessive RE. RE has only little influence on the strength of microalloyed steel, but it can improve impact toughness effectively.
Key words:metal materials; microalloyed steel; precipitation; properties; rare earths;
【全文内容正在添加中】
