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Microstructural changes during deformation of AISI 300 grade austenitic stainless steels: Impact of chemical heterogeneity
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SYSNO ASEP 0465434 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Microstructural changes during deformation of AISI 300 grade austenitic stainless steels: Impact of chemical heterogeneity Author(s) Man, Jiří (UFM-A) RID, ORCID
Kuběna, Ivo (UFM-A) RID, ORCID
Smaga, M. (DE)
Man, O. (CZ)
Järvenpää, A. (FI)
Weidner, A. (DE)
Chlup, Zdeněk (UFM-A) RID, ORCID
Polák, Jaroslav (UFM-A) RID, ORCIDNumber of authors 8 Source Title 21st European Conference on Fracture. - Amsterdam : Elsevier, 2016 - ISSN 2452-3216 Pages s. 2299-2306 Number of pages 8 s. Publication form Online - E Action ECF21 - European Conference on Fracture /21./ Event date 20.06.2016-24.06.2016 VEvent location Catania Country IT - Italy Event type WRD Language eng - English Country NL - Netherlands Keywords austenitic stainless steels ; deformation induced martensite ; chemical banding ; UFG structure ; color metallography Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA13-32665S GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 UT WOS 000387976802045 DOI 10.1016/j.prostr.2016.06.288 Annotation The importance of chemical heterogeneity for destabilization of austenitic structure and formation of deformation induced martensite (DIM) in AISI 300 grade austenitic stainless steels (ASSs) of different level of austenite stability (316L, 304, 301LN) is pointed out. Color etching reveals that the structure of wrought Cr–Ni type steels of diverse wrought semi-product forms (plates, sheets, bars) is never fully chemically homogeneous. Confrontation of distribution and morphology of DIM after static and cyclic straining with the characteristic local variations in chemical composition proved prominent role of chemical banding in the destabilization of originally fully austenitic structure. This fact should be considered especially when interpreting the results of hydrogen embrittlement tensile testing of Cr–Ni ASSs with lowered Ni content. An impact of chemical heterogeneity on microstructural changes during production of UFG structure of 301LN and its cyclic straining is highlighted. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2017
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