Two strain-hardening mechanisms in nanocrystalline austenitic steel: An in situ synchrotron X-ray diffraction study

Autor:	P. Schloth, Martin Heilmaier, B.S. Murty, Stefan Lauterbach, H. Van Swygenhoven, S. Van Petegem, M.A. Weisser, V. Subramanya Sarma, P. Susila
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	Materials science Twinning Retained austenite X ray diffraction Nucleation Tensile deformation Stainless-Steels Deformation twinning Phase (matter) Alloys General Materials Science Martensite Synchrotron X-ray diffraction Martensitic phase transformations Nanocrystallines Austenite Nanocrystalline materials Behavior In-situ synchrotrons Synchrotron radiation Mechanical Engineering Metallurgy Metals and Alloys Temperature Mechanical behaviour Strain hardening exponent Condensed Matter Physics Nanocrystalline material Deformation Mechanics of Materials Metals Phase transitions Austenitic steel Deformation (engineering) Crystal twinning Nano-crystalline structures Martensitic phase transformation
Zdroj:	IndraStra Global.
ISSN:	2381-3652
Popis:	The mechanical behaviour of nanocrystalline austenitic steels with and without yttria particles was investigated using in situ synchrotron diffraction during tensile deformation. Two different strain-hardening regimes were found. The first regime can be assigned predominantly to a martensitic phase transformation, the second to deformation twinning in the fragmented retained austenite. The kinetics of martensitic phase transformation is remarkably enhanced in the nanocrystalline structure. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ee06ee8298a3fe162e91238b2745270 https://igi.indrastra.com/items/show/80339 Zobrazit plný text záznamu