Three phase crystallography and solute distribution analysis during residual austenite decomposition in tempered nanocrystalline bainitic steels

Journal Article · Fri Feb 14 23:00:00 EST 2014 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2013.11.013· OSTI ID:22288734

Caballero, F. G. ^[1]; Yen, Hung-Wei ^[2]; Miller, M. K. ^[3]; Cornide, J. ^[1]; Chang, Hsiao-Tzu ^[2]; Garcia-Mateo, C. ^[1]; Yang, Jer-Ren ^[2]

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1. Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Avda Gregorio del Amo, 8, Madrid E-28040 (Spain)
2. Department of Materials Science and Engineering, National Taiwan University, 1, Roosevelt Rd. Sec. 4, Taipei 10617, Taiwan (China)
3. Oak Ridge National Laboratory (ORNL), Materials Science and Technology Division, Oak Ridge, TN 37831-6139 (United States)

Interphase carbide precipitation due to austenite decomposition was investigated by high resolution transmission electron microscopy and atom probe tomography in tempered nanostructured bainitic steels. Results showed that cementite (θ) forms by a paraequilibrium transformation mechanism at the bainitic ferrite–austenite interface with a simultaneous three phase crystallographic orientation relationship. - Highlights: • Interphase carbide precipitation due to austenite decomposition • Tempered nanostructured bainitic steels • High resolution transmission electron microscopy and atom probe tomography • Paraequilibrium θ with three phase crystallographic orientation relationship.

• OSTI ID: 22288734
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 88; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMS
AUSTENITE
CEMENTITE
CRYSTALLOGRAPHY
CRYSTALS
DECOMPOSITION
NANOSTRUCTURES
PRECIPITATION
STEELS
TOMOGRAPHY
TRANSMISSION ELECTRON MICROSCOPY