EFFECTS OF La ON STRUCTURE AND PROPERTIES OF HEAVY RAIL STEEL |
| |
| Authors: | C.J. Liu M.F. Jiang Y.S. Wang J.J. Chen C.L. Li |
| |
| Affiliation: | 1. Northeastern University, Shenyang 110004, China
2. Northeastern University, Shenyang 110004, China;Baotou Iron and Steel Group Corporation, Baotou 014010, China |
| |
| Abstract: | The mechanisms of La in heavy rail steel were studied by means of experimental measurements, microstructure observation and theoretical analysis in the present work. For heavy rail steel, the state and the content of La were measured, and the mechanisms and the effects of La on sulfide inclusions, microstructure and properties of steel were determined. Strip-like sulfides disappear in heavy rail steel with La/(O S)>3.50, which is shown that the metallurgical function of modi- fying sulfide inclusions has been achieved by La. La can fine the grain size of the austenite in heavy rail steel. Under the experimental condition, the plasticity and the impacting toughness of heavy rail steel with 0.005wt% La can evidently be improved. |
| |
| Keywords: | rare earth heavy rail steel microscopic structure sulfide inclusion property |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《金属学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《金属学报(英文版)》下载全文 |
|
