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Effect of thermomechanical processing on the microstructure and retained austenite stability during in situ tensile testing using synchrotron X-Ray diffraction of NbMoAl TRIP steel

journal contribution
posted on 2011-01-01, 00:00 authored by E Pereloma, L Zhang, K D Liss, U Garbe, J Almer, T Schambron, Hossein BeladiHossein Beladi, Ilana Timokhina
In this work we compare and contrast the stability of retained austenite during tensile testing of Nb-Mo-Al transformation-induced plasticity steel subjected to different thermomechanical processing schedules. The obtained microstructures were characterised using optical metallography, transmission electron microscopy and X-ray diffraction. The transformation of retained austenite to martensite under tensile loading was observed by in-situ high energy X-ray diffraction at 1ID / APS. It has been shown that the variations in the microstructure of the steel, such as volume fractions of present phases, their morphology and dimensions, play a critical role in the strain-induced transition of retained austenite to martensite.

History

Journal

Solid state phenomena

Volume

172-174

Pagination

741 - 746

Publisher

Scitec Publications

Location

Zürich, Switzerland

ISSN

1012-0394

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2011, Trans Tech Publications