Low-Temperature Carbide Transformation in Pearlite of Medium-Carbon Steels

Metallographic studies of annealed medium-carbon steels (45, 40Kh, and 35KhGSA) showed that there is low-temperature peritectoid carbide transformation of pearlite of these steels, in which solid solutions of ferrite and cementite form solid solution with a broad homogeneity range on the basis of ε-...

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Bibliographic Details
Published in:Steel in translation 2020-09, Vol.50 (9), p.639-647
Main Author: Davydov, S. V.
Format: Article
Language:English
Subjects:
Carbides
Cementite
Chemistry and Materials Science
Homogeneity
Low temperature
Materials Science
Medium carbon steels
Pearlite
Solid solutions
Transformations
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Summary:Metallographic studies of annealed medium-carbon steels (45, 40Kh, and 35KhGSA) showed that there is low-temperature peritectoid carbide transformation of pearlite of these steels, in which solid solutions of ferrite and cementite form solid solution with a broad homogeneity range on the basis of ε-carbide Fe 2 C. It was suggested to plot the horizontal line of peritectoid transformation at the temperature of 382°C and the horizontal line of peritectoid transformation of cementite at 1650°C on the Fe–C diagram of state.
ISSN:0967-0912
1935-0988
DOI:10.3103/S0967091220090041