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Effect of surface carbonitriding by plasma immersion ion implantation on the fatigue behaviour of 316L austenitic stainless stee
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SYSNO ASEP 0026256 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effect of surface carbonitriding by plasma immersion ion implantation on the fatigue behaviour of 316L austenitic stainless stee Title Vliv povrchové karbonitridace plazmovou imerzní iontovou implantací na únavové chování austenitické nerezavějící oceli 316L Author(s) Obrtlík, Karel (UFM-A) RID, ORCID
Jirásková, Yvonna (UFM-A) RID, ORCID
Man, Jiří (UFM-A) RID, ORCID
Polák, Jaroslav (UFM-A) RID, ORCIDSource Title Computer Methods and Experimental Measurements for Surface Effects and Contact Mechanics /7./. - Southampton : WIT Press, 2005 / De Hosson J.T.M. ; Brebia C.A. ; Nishida S.I. - ISBN 1-84564-022-5 Pages s. 13-22 Number of pages 10 s. Action Contact Surface 2005 /7./ Event date 05.09.2005-07.09.2005 VEvent location Bologna Country IT - Italy Event type WRD Language eng - English Country GB - United Kingdom Keywords austenitic stainless steel ; fatigue life curves ; plasma immersion ion implantation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA106/03/1265 GA ČR - Czech Science Foundation (CSF) 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) ME 373 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation Cylindrical specimens of 316L austenitic stainless steel in as-received condition and with surface carbonitriding by plasma immersion ion implantation were cyclically strained under plastic strain control. Micro-hardness depth profile of hardened surface layer was measured. Mössbauer spectroscopy and X-ray diffraction were used to study the phase composition of the treated layer. Stress-strain response and fatigue life data of both materials were obtained. Surface relief and fracture surface were examined to study fatigue damage mechanisms. Two domains separated by the transitional plastic strain amplitude could be distinguished in fatigue behaviour of the treated steel. In the low amplitude domain, the main crack originates in subsurface region resulting in the prolonged lifetime. The main crack initiates at the surface in the high amplitude domain and the fatigue life of the treated steel is reduced compared to the untreated one. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2006
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