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Published in: Metal Science and Heat Treatment 3-4/2022

07-09-2022 | HEAT-RESISTANT ALLOYS

Effect of Casting Method on Phase Composition of Heat-Resistant Austenitic Alloys Based on the Fe – 25% Cr – 35% Ni System

Author: S. Yu. Kondrat’ev

Published in: Metal Science and Heat Treatment | Issue 3-4/2022

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Abstract

Methods of optical and electron microscopy and x-ray spectrum microanalysis are used to study the microstructure and the phase composition of alloy HP40NbTi produced by different casting methods. The effect of melt cooling rate within 1 – 1000 K/sec in the process of crystallization on chemical heterogeneity and quantitative proportion of chromium carbide to niobium carbide in the cast structure is investigated. It is shown that chemical heterogeneity of phases in the alloy is the highest when melt is cooled at a rate of 100 – 300 K/sec, which corresponds to crystallization conditions during welding and surfacing.

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Footnotes
1
Here are subsequently through the text element content, apart from stipulated cases, is given in weight fractions expressed as a %.
 
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Metadata
Title
Effect of Casting Method on Phase Composition of Heat-Resistant Austenitic Alloys Based on the Fe – 25% Cr – 35% Ni System
Author
S. Yu. Kondrat’ev
Publication date
07-09-2022
Publisher
Springer US
Published in
Metal Science and Heat Treatment / Issue 3-4/2022
Print ISSN: 0026-0673
Electronic ISSN: 1573-8973
DOI
https://doi.org/10.1007/s11041-022-00783-0

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