0431443 - FZÚ 2015 RIV CH eng C - Conference Paper (international conference)
Zrník, J. - Muránsky, O. - Šittner, Petr
Impact of microstructure modification on deformation behaviour of bulk TRIP steel.
METALLOGRAPHY XV. Zurich: TRANS TECH PUBLICATIONS LTD, 2014 - (Longauerová, M.; Zubko, P.), s. 99-103. Materials Science Forum. ISSN 0255-5476.
[International Symposium on Metallography /15./. Stará Lesná (SK), 24.04.2013-26.04.2013]
Institutional support: RVO:68378271
Keywords : TRIP steel * austenite conditioning * structure * retained austenite * neutron diffraction
Subject RIV: BM - Solid Matter Physics ; Magnetism

The paper presents results of in-situ neutron diffraction experiments aimed on monitoring the phase evolution and load distribution in TRIP steel when subjected to tensile loading. Tensile eformation behaviour of TRIP steel with different initial microstructures showed that the applied tensile load is redistributed at the yield point and the harder retained austenite (Feγ) bears larger load then ferrite (Feα) matrix. After load partioning is finished, macroscopic yielding comes through simultaneous activity of the martensite transformation (in the austenite) and plastic deformation process in ferrite. The steel with higher volume fraction of retained austenite and less stronger ferrite appears to be a better TRIP steel having efficient structure for better plasticity purpose.
Permanent Link: http://hdl.handle.net/11104/0236033