TRACKING SOLUTE ATOMS DURING BAINITE REACTION IN A NANOCRYSTALLINE STEEL

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Materials Science and Technology

DOI:https://doi.org/10.1179/026708310X12635619987943· OSTI ID:986387

Caballero, Francesca G. ^[1]; Miller, Michael K ^[2]; Garcia-Mateo, C. ^[1]

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1. CENIM-CSIC, Madrid, Spain
2. ORNL

The extremely slow transformation kinetics of a nanocrystalline bainitic steel makes this novel structure the perfect candidate to determine the carbon content of the bainitic ferrite away from any carbon enriched regions, such as dislocations and boundaries, as the bainite transformation progresses at extremely low temperatures. The purpose of this atom probe tomography study was to systematically track atom distributions during the bainite reaction in a nanocrystalline steel. The results will provide new experimental evidence on the explanation for the incomplete reaction phenomenon and the carbon supersaturation of the bainitic ferrite during transformation, subjects critically relevant to understanding the atomic mechanism controlling bainitic ferrite growth.

• Research Organization: Oak Ridge National Laboratory (ORNL); Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 986387
• Journal Information: Materials Science and Technology, Journal Name: Materials Science and Technology Journal Issue: 8 Vol. 26; ISSN 0267-0836; ISSN MSCTEP
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMS
BAINITE
CARBON
DISLOCATIONS
FERRITE
KINETICS
PROBES
SOLUTES
STEELS
SUPERSATURATION
TOMOGRAPHY
TRANSFORMATIONS