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Journal of Materials Engineering and Performance

Erschienen in:

25.11.2015

Modeling of Austenite Grain Growth During Austenitization in a Low Alloy Steel

verfasst von: Dingqian Dong, Fei Chen, Zhenshan Cui

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 1/2016

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Abstract

The main purpose of this work is to develop a pragmatic model to predict austenite grain growth in a nuclear reactor pressure vessel steel. Austenite grain growth kinetics has been investigated under different heating conditions, involving heating temperature, holding time, as well as heating rate. Based on the experimental results, the mathematical model was established by regression analysis. The model predictions present a good agreement with the experimental data. Meanwhile, grain boundary precipitates and pinning effects on grain growth were studied by transmission electron microscopy. It is found that with the increasing of the temperature, the second-phase particles tend to be dissolved and the pinning effects become smaller, which results in a rapid growth of certain large grains with favorable orientation. The results from this study provide the basis for the establishment of large-sized ingot heating specification for SA508-III steel.

Vorheriger Artikel Erratum to: Influence of Cyclic Straining on Fatigue, Deformation, and Fracture Behavior of High-Strength Alloy Steel

Nächster Artikel Application of the Materials-by-Design Methodology to Redesign a New Grade of the High-Strength Low-Alloy Class of Steels with Improved Mechanical Properties and Processability

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Titel: Modeling of Austenite Grain Growth During Austenitization in a Low Alloy Steel
verfasst von: Dingqian Dong
Fei Chen
Zhenshan Cui
Publikationsdatum: 25.11.2015
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 1/2016
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-015-1810-9

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