Comparative study of the mechanical and tribological properties of a Hadfield and a Fermanal steel

• Published in: Hyperfine interactions 2017-11, Vol.238 (1), p.1-12, Article 56
• Main Authors: Astudillo A., P. C., Soriano G., A. F., Barona Osorio, G. M., Sánchez Sthepa, H., Ramos, J., Durán, J. F., Pérez Alcázar, G. A.
• Format: Article
• Language: English
• Subjects: 13-18 November 2016; Alloys; Atomic; Chromium iron; Comparative studies; Condensed Matter Physics; Diffraction patterns; Ferromagnetism; Gamma phase; Hadrons; Heavy Ions; Hyperfine structure; Iron carbides; Iron oxides; Martensite; Mechanical properties; Molecular; Mossbauer spectroscopy; Nuclear Physics; Optical and Plasma Physics; Panama; Panama City; Physics; Physics and Astronomy; Proceedings of the 15th Latin American Conference on the Applications of the Mössbauer Effect (LACAME 2016); Surfaces and Interfaces; Thin Films; Tribology; X-ray diffraction
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-017-1422-x

In this study, Fe-12.50Mn-1.10C-1.70Cr-0.40Mo-0.40Si-0.50(max)P-0.50(max)S (Hadfield alloy) and Fe-28.4Mn-0.86C-1.63Al-0.42Cu-1.80Mo-1.59Si-0.60W (Fermanal alloy) (Wt. %) in the aged condition were compared in terms of its tribological and microstructural properties. The x-ray diffraction (XRD) patterns were refined with the lines of the austenitic γ -phase, Chromium Iron Carbide (Cr 2 Fe 14 C), Iron Carbide (Fe 2 C), and Iron Oxide (Fe 0.974 O (II)) for the Hadfield alloy, and the lines of the austenitic γ -phase, martensite (M), Mn 1.1 Al 0.9 phase and iron carbide (Fe 7 C 3 ) for the Fermanal alloy. Mössbauer spectra were fit with two sites for the Hadfield alloy, which displayed as a broad singlet because of the austenitic disordered phase, and had a magnetic hyperfine field distribution, which corresponds to the Cr 2 Fe 14 C ferromagnetic carbides found by XRD. There were two paramagnetic sites, a singlet, which corresponds to the austenite disordered phase, and a doublet, which can be attributed to the Fe 7 C 3 carbide. The obtained Rockwell C hardness for aged Hadfield and Fermanal alloys were 43.786 and 50.018 HRc, respectively.