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Erschienen in:
2019 | OriginalPaper | Buchkapitel
5. Influence of Heat Treatment Process to the Fatigue Properties of High Strength Steel
verfasst von : V. Chmelko, I. Berta, M. Margetin
Erschienen in: Mechanical Fatigue of Metals
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Abstract
This paper is devoted to the analysis of static and cyclic properties of two high strength steels (AS 4340). The reason for this analysis was the need to select suitable materials for the power engineering. Analyzed materials had a practically identical chemical composition. The heat treatment process declared by the inspection certificate was very similar too. By the measurements of mechanical properties there were differences in static strength and especially in cyclic properties of compared materials. To explain the significant differences in fatigue properties between materials, it was necessary to analyze their microstructure. The results have shown that a relatively small change in the heat treatment process has a significant effect on the fatigue properties of the steel.