Effect of prior martensite on bainite transformation in nanobainite steel

Gong, W.; Tomota, Yo*; Harjo, S. ; Su, Y. H. ; Aizawa, Kazuya

Nanobainite transformation behavior was comparably studied using in situ neutron diffraction measurements, scanning electron microscopy and electron backscatter diffraction observations for two heat treatments: with and without partial quenching before isothermal holding at 523 or 573 K. Prior martensite transformation was found to accelerate the subsequent nanobainite transformation. Bainitic lathes formed adjacent to a pre-existing martensite plate exhibited an almost identical orientation. Dislocations introduced in austenite due to stress relaxation of transformation strains are believed to assist bainite transformation accompanying variant selection.

Language	:	English
Journal	:	Acta Materialia
Volume	:	85
Number	:
Pages	:	p.243 - 249
Publication Year/Month	:	2015/02
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Paper URL	:	https://doi.org/10.1016/j.actamat.2014.11.029
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	J-PARC物質・生命科学実験施設
Press Release	:
Article of JAEA R&D Review	:	Neutron Diffraction Study of Phase Transformations in Steels; Effect of Partial Quenching on Phase Transformation in Nano-Bainite Steel[/]
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Registration No. : AA20150230
JAEA Abstracts No. : 43001052
Paper Submission No. : 16149

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