Effects of rare earth on behavior of precipitation and properties in microalloyed steels

被引：0

作者：

Lin, Q ^{[1
]}

Chen, BW

Tang, L

Li, LS

Zhu, XY

Wang, HB

机构：

[1] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China

[2] Wuhan Iron & Steel Grp Co, Natl Enterprise Technol Ctr, Wuhan 430080, Peoples R China

[3] Panzhihua Iron & Steel Grp Co, Panzhihua 617000, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2003年 / 21卷 / 02期

关键词：

metal materials; microalloyed steel; precipitation; properties; rare earths;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：167 / 171

页数：5

共 8 条

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