Journal
SCRIPTA MATERIALIA
Volume 104, Issue -, Pages 79-82Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.03.027
Keywords
Nano-SIMS; EBSD; Carbon partitioning kinetics; Quenching and partitioning
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Funding
- US Department of Energy (DOE) [DE-AC05-76RL01830]
- DOE's Vehicle Technologies Office under the Automotive Lightweight Materials Program
- Office of Biological and Environmental Research
- ASPPRC, an industry-university cooperative research center at the Colorado School of Mines
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A multi-modal characterization technique, which combines nanoscale secondary ion mass spectroscopy (Nano-SIMS) with a spatial resolution of similar to 100 nm and electron back scatter diffraction (EBSD) to determine carbon distributions in austenite and martensite in a quenched and partitioned (Q&P) Fe-0.29C-2.95Mn-1.59Si steel is presented. Significant carbon enrichment of austenite was measured with decreased levels of carbon in martensite, supporting the carbon partitioning mechanism. Fresh untempered martensite could be identified, and different degrees of enrichment were observed for blocky and lath austenite. (C) 2015 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
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