Quantitative non-destructive indication of decarburized surface layers on steel products

0372511 - FZÚ 2012 RIV FI eng C - Konferenční příspěvek (zahraniční konf.)
Tomáš, Ivan - Kadlecová, Jana - Perevertov, Oleksiy - Skrbek, B.
Quantitative non-destructive indication of decarburized surface layers on steel products.
Proceedings of International Conference on Barkhausen Noise and Micromagnetic Testing - ICBM9. Vaajakoski: ICBM Conference Organisation, 2011, s. 23-31. ISBN 978-952-67247-4-4.
[International Conference on Barkhausen Noise and Micromagnetic Testing /9./ - ICBM9. Hejnice (CZ), 27.06.2011-30.06.2011]
Grant CEP: GA ČR GA101/09/1323
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: surface decarburization * magnetic non-destructive testing * minor hysteresis loops
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

Decarburization is a common adverse effect at manufacturing and processing of steel semi-products. A series of samples was produced from spring steel 54SiCr6 and annealed at 800oC at air atmosphere for 0, 1, 4, 8 and 20 hours. The decarburized layers that appeared on the surfaces were examined metalographically and magnetically. The magnetic hysteresis tests proved an appreciable sensitivity and experimental simpolicity, allowing nondestructive determination of thickness of the decarburized surface layer. Results of the measurement and shape of the calibration curves was shown to depend on surface treatment of the samples
Trvalý link: http://hdl.handle.net/11104/0205814