New Equation for Prediction of Martensite Start Temperature in High Carbon Ferrous Alloys

Title
New Equation for Prediction of Martensite Start Temperature in High Carbon Ferrous Alloys
Authors
심재혁박지혜이석재
Keywords
Ferrous alloy; Martensite; Martensite start temperature; Cabide; Empirical equation; Fe3C; M7C3
Issue Date
2018-02
Publisher
Metallurgical and materials transactions. A, Physical metallurgy and materials science
Citation
VOL 49A, NO 2-454
Abstract
Since previous equations fail to predict MS temperature of high carbon ferrous alloys, we first propose an equation for prediction of MS temperature of ferrous alloys containing>2 wt pct C. The presence of carbides (Fe3C and Cr-rich M7C3) is thermodynamically considered to estimate the C concentration in austenite. Especially, equations individually specialized for lean and high Cr alloys very accurately reproduce experimental results. The chemical driving force for martensitic transformation is quantitatively analyzed based on the calculation of T0 temperature.
URI
http://pubs.kist.re.kr/handle/201004/70199
ISSN
1073-5623
Appears in Collections:
KIST Publication > Article
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