期刊
SCRIPTA MATERIALIA
卷 142, 期 -, 页码 46-49出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.08.024
关键词
Martensitic phase transformations; Steel; Kinetics
类别
资金
- Danish Council for Independent Research [DFF-4005-00223]
Magnetometry was applied to investigate the formation of alpha/alpha-martensite in 13 ferrous alloys during immersion in boiling nitrogen and during re-heating to room temperature at controlled heating rates in the range 0.00830.83 M s(-1). Data shows that in 3 of the alloys, those that form (5 5 7)gamma, martensite, no martensite develops during cooling. For all investigated alloys, irrespective of the type of martensite forming, thermally activated martensite develops during heating. The activation energy for thermally activated martensite formation is in the range 827 kJ marl and increases with the fraction of interstitial solutes in the alloy. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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