Impact of microstructure modification on deformation behaviour of bulk TRIP steel
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Date
2013-04-24
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Trans Tech Publications Ltd
Abstract
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 deformation 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.© 2014 Trans Tech Publications Ltd.
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Keywords
Steels, Structure, Neutron diffraction, Microstructure, Deformation, Materials
Citation
Zrník, J., Muránsky, O., & Šittner, P. (2014). Impact of microstructure modification on deformation behaviour of bulk TRIP steel. Paper presented to the International Symposium on Metallography, “Metallography 2013”, 24 – 26 April 2013, Stará Lesná, Slovak Republic. In Materials Science Forum, 782, 99-103. doi:10.4028/www.scientific.net/MSF.782.99