Influence of selected rare earth metals on structural characteristics of 42CrMo4 steelReportar como inadecuado




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Metallurgy, Vol.55 No.4 October 2016. -

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.

Low-carbon 42CrMo4 steel; rare earth metals; centrifugal casting; structure; inclusions



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Fuente: http://hrcak.srce.hr/



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