On the Chemical Heterogeneity of Austenite in Maraging Steel

On the Chemical Heterogeneity of Austenite in Maraging Steel

T.M. Makhneva, V.B. Dementyev

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Abstract. The change of Ni-, Cr-, Cu- contents in maraging steel composition occurring on heating in the subcritical and intercritical interval has been studied by the X-ray spectral microanalysis. Heating in the temperature range from 490 to 550C has resulted in increasing of Ni- Cu- concentrations in the 1iquation austenite when the latter is present in the steel structure as a consequence of several reasons (the large ingot, low level of forging reduction ratio, etc.). The significant enrichment of surface layers of austenite inclusions may probably occur if there are great differences between interphase and intraphase diffusion rates. By varying the thermal treatment and thus the Ni-diffusion in austenite it is possible to create austenite layers with different Ni-contents within a grain or massive martensite and it is also possible to control the material properties.

Maraging Steel, X-Ray Spectral Microanalysis, Phase Transformation, Liquation Austenite

Published online 1/5/2022, 5 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: T.M. Makhneva, V.B. Dementyev, On the Chemical Heterogeneity of Austenite in Maraging Steel, Materials Research Proceedings, Vol. 21, pp 224-228, 2022

DOI: https://doi.org/10.21741/9781644901755-40

The article was published as article 40 of the book Modern Trends in Manufacturing Technologies and Equipment

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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