Determination of carbon distributions in quenched and partitioned microstructures using nanoscale secondary ion mass spectroscopy

Journal Article · Mon Apr 20 00:00:00 EDT 2015 · Scripta Materialia, 104:79-82

DOI:https://doi.org/10.1016/j.scriptamat.2015.03.027· OSTI ID:1208718

Choi, Kyoo Sil; Zhu, Zihua; Sun, Xin; De Moor, Emmanuel; Taylor, Mark D.; Speer, John; Matlock, David K.

A multi-modal characterization technique, which combines nanoscale secondary ion mass spectroscopy (Nano-SIMS) with a spatial resolution of ~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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1208718
• Report Number(s): PNNL-SA-107815; 47721; 600306000
• Journal Information: Scripta Materialia, 104:79-82, Journal Name: Scripta Materialia, 104:79-82
• Country of Publication: United States
• Language: English

Related Subjects

Environmental Molecular Sciences Laboratory
Nano-SIMS
Quenching and Partitioning
carbon partitioning kinetics