Effects of Lanthanum on Mechanical Properties of 5CrNiMo Forging Die Steel
来源期刊：JOURNAL OF RARE EARTHS2007年增刊第1期
论文作者：He Zhihui Gao Wenhai Guo Hongfei Hao Xin Liu Jingshun
Key words：forging die steel; 5CrNiMo; strength; hardness; impact ductility; rare earths;
Abstract: The alteration of the strength, hardness and impact ductility of 5CrNiMo steel using three different additions of RE La element is studied in this paper. The mechanical properties of 5CrNiMo steel with RE La additions are be compared with that of the 5CrNiMo steel on the same heat-treatment condition without RE La element addition. The results show that the strength. hardness and impact ductility of 5CrNiMo steel will be improved obviously when the content of RE La element is proper, and as the content of RE La element is 0.033% (mass fraction), the 5CrNiMo steel has the best mechanical properties.
He Zhihui1，Gao Wenhai2，Guo Hongfei1，Hao Xin1，Liu Jingshun1
(1.College of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051, China;
2.Baotou North Forging Co., Ltd, Inner Mongolia North Heavy Industries Group, Baotou 014033, China)
Abstract:The alteration of the strength, hardness and impact ductility of 5CrNiMo steel using three different additions of RE La element is studied in this paper. The mechanical properties of 5CrNiMo steel with RE La additions are be compared with that of the 5CrNiMo steel on the same heat-treatment condition without RE La element addition. The results show that the strength. hardness and impact ductility of 5CrNiMo steel will be improved obviously when the content of RE La element is proper, and as the content of RE La element is 0.033% (mass fraction), the 5CrNiMo steel has the best mechanical properties.
Key words:forging die steel; 5CrNiMo; strength; hardness; impact ductility; rare earths;
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