INFLUENCE OF SELECTED RARE EARTH METALS ON STRUCTURAL CHARACTERISTICS OF 42CrMo4 STEEL

被引：0
|
作者：
Drapala, J. [1 ]
Brozova, S. [1 ]
Szurman, I. [1 ]
Konecna, K. [1 ]
Kostiukova, G. [1 ]
Vontorova, J. [1 ]
Jonsta, P. [2 ]
Sobotkova, K. [3 ]
机构：
[1] VSB Tech Univ Ostrava, Fac Met & Mat Engn, Ostrava, Czech Republic
[2] Vitkovice Heavy Machinery As, Ostrava, Czech Republic
[3] Tescan Orsay Holding As, Brno, Czech Republic
来源：
METALURGIJA | 2016年 / 55卷 / 04期
关键词：
Low-carbon; 42CrMo4; steel; rare earth metals; centrifugal casting; structure; inclusions;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influence of rare earth metals (REM) addition on solidification structure of the low-carbon 42CrMo4 steel was investigated. Alloys were prepared by means of a centrifugal casting. The addition of cerium, praseodymium or mischmetal in the steel produced greatly improved solidification structure with a suppressed columnar grain zone, finer grain size in the equiaxed grain zone. The additions occurred in the steel bath in the form of REM oxide and/or oxide-sulphide inclusions and as dissolved REM segregated along with other elements at prior grain boundaries and interdendritic spaces. Microstructure (light microscope), SEM/EDX chemical microanalysis, and TOF-SIMS analysis - mapping of elements in the structure of alloys were obtained.
引用
收藏
页码：757 / 760
页数：4
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