Impact of Microstructure Modification on Deformation Behaviour of Bulk TRIP Steel

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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.

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Edited by:

Margita Longauerová and Pavol Zubko

Pages:

99-103

DOI:

10.4028/www.scientific.net/MSF.782.99

Citation:

J. Zrník et al., "Impact of Microstructure Modification on Deformation Behaviour of Bulk TRIP Steel", Materials Science Forum, Vol. 782, pp. 99-103, 2014

Online since:

April 2014

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$38.00

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