Micromagnetic and Mössbauer spectroscopic investigation of strain-induced martensite in austenitic stainless steel |
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| Authors: | L. Mészáros M. Kéldor B. Hidasi A. Vértes I. Czakó-Nagy |
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| Affiliation: | 1. Department of Electrical Engineering Materials, Technical University of Budapest, H-1111 Goldman sq. 3, Budapest, Hungary
2. Department of Nuclear Chemistry, E?tv?s Loránd University, H-1117 Pázmány Péter sétány 2, Budapest, Hungary
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| Abstract: | Strain-induced martensite in 18/8 austenitic stainless steel was studied. Magnetic measurements and Mössbauer spectroscopic investigations were performed to characterize the amount of α’-martensite due to room-temperature plastic tensile loading. The effects of cold work and annealing heat treatment were explored using magnetic Barkhausen noise, saturation polarization, coercive force, hardness, and conversion electron Mössbauer spectra measurements. The results of the magnetic measurements were compared to results obtained by Mössbauer spectroscopy. The suggested Barkhausen noise measurement technique proved to be a useful quantitative and nondestructive method for determining the ferromagnetic phase ratio of the studied alloy. |
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| Keywords: | austenitic stainless steel martensite formation mechanical working strain hardening |
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