Kinetics of the partitioning of carbon and substitutional alloying elements during quenching and partitioning (Q&P) processing of medium Mn steel
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SCOPUS
- Title
- Kinetics of the partitioning of carbon and substitutional alloying elements during quenching and partitioning (Q&P) processing of medium Mn steel
- Authors
- Seo, EJ; Cho, L; De Cooman, BC
- Date Issued
- 2016-04-01
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Quenching and partitioning (Q&P) processing of medium Mn steel is a new approach to produce formable ultra-high strength steel with a martensite +/- austenite microstructure. Carbon partitioning from martensite into austenite is essential for austenite stabilization during Q&P processing, and substitutional atom partitioning is usually considered not to occur. The present study provides a direct atomic-scale evidence for the partitioning of both interstitial carbon and substitutional Mn and Si, during the Q&P processing of medium Mn steel by means of 3-dimensional atom probe tomography. The experimental results were compared to results of a numerical simulation of the kinetics of carbon, Si and Mn partitioning during Q&P processing assuming an immobile martensite-austenite phase boundary. Both show that short range substitutional alloying element partitioning occurs during the partitioning stage in Q&P processing. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36090
- DOI
- 10.1016/J.ACTAMAT.2016.01.059
- ISSN
- 1359-6454
- Article Type
- Article
- Citation
- ACTA MATERIALIA, vol. 107, page. 354 - 365, 2016-04-01
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