Rapid solidification behavior of Fe-Cr-Mn-Mo-Si-C alloys
2007 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 38, no 6, 917-926 p.Article in journal (Refereed) Published
The rapid solidification behavior of alloys in the Fe-Cr-Mn-Mo-Si-C system was investigated for different compositions and cooling rates. The C content was varied and alloying additions of Mo and B were studied with respect to their effect on the microstructure. The alloys were cast as either melt-spun ribbons or as 1-mm-thick plates after levitation or as rods 2 to 4 mm in diameter by injection into copper molds. A homogeneous single-phase structure was obtained for the alloy of composition 72.8Fe-8Cr-6Mn-5Si-5Mo-3.2C (wt pct), for a sample diameter of 2.85 mm, at a cooling rate of approximate to 1100 K/s. The single-phase structure was identified as a metastable solid solution, exhibiting the characteristics of the e phase. Upon reheating, decomposition of the single-phase structure into fine bainite plates and secondary carbides was observed between 600 degrees C and 700 degrees C. The annealed structure obtained showed high hardness values (> 850 HV).
Place, publisher, year, edition, pages
2007. Vol. 38, no 6, 917-926 p.
bulk metallic glasses; amorphous-alloys; epsilon-phase; steel
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-7309DOI: 10.1007/s11663-007-9108-4ISI: 000251925700009ScopusID: 2-s2.0-37449031278OAI: oai:DiVA.org:kth-7309DiVA: diva2:12278
QC 201008052007-06-072007-06-072010-12-07Bibliographically approved