期刊
ACTA MATERIALIA
卷 90, 期 -, 页码 161-168出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2015.02.040
关键词
Steel; Annealing; Interface mobility; In situ TEM
资金
- governmental institute for the Promotion of Innovation by Science and Technology in Flanders (IWT)
- European Research Council under the European Union [306292]
- [RFCS-CT-2011-00017]
A 1C3Mn1.5Si steel was partially transformed into martensite by quenching to room temperature after full austenitisation. A partitioning treatment was applied in situ in a high resolution transmission electron microscope. The width of an austenite grain in between martensite constituents was followed as a function of the annealing time. Migration of the martensite austenite interfaces was quantitatively measured and compared with results from a model for carbon partitioning from martensite to austenite involving interface motion. The kinetics of the observed movement suggests that the interface has a semi-coherent nature. This work shows that grain boundary mobility of the martensite austenite interfaces during annealing may play an important role in the microstructure development during the process of Quenching and Partitioning in steels. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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