Interstitial elements in steel: effect on structure and properties
-
V. Gavriljuk
und B. Shanina
Abstract
Atomic distribution, thermodynamic stability of solid solutions and properties of dislocations in steels are discussed in terms of the effect of carbon, nitrogen and hydrogen on the electronic structure of iron. It is shown that nitrogen and hydrogen increase the density of electron states at the Fermi level, which results in the enhanced metallic character of interatomic bonds, whereas carbon acts in the opposite direction and enhances the covalent bonds. Some remarkable features of mechanical behavior of austenitic steels containing carbon, nitrogen and hydrogen are analyzed based on the differences and similarities of the electronic structure.
Kurzfassung
Die Verteilung der Atome, thermodynamische Stabilität fester Lösungen und Eigenschaften von Versetzungen in Stählen werden in Bezug auf den Einfluss von Kohlenstoff, Stickstoff und Wasserstoff auf die Elektronenstruktur des Eisens diskutiert. Es wird gezeigt, dass Stickstoff und Wasserstoff die Dichte der Elektronenzustände im Fermi-Niveau erhöhen, was sich in einem zunehmenden metallischen Charakter der interatomaren Bindungen ausdrückt. Kohlenstoff wirkt dagegen in die entgegengesetzte Richtung und verstärkt die kovalenten Bindungen. Einige wichtige Kennzeichen des mechanischen Verhaltens austenitischer Stähle mit Kohlenstoff, Stickstoff und Wasserstoff werden auf der Grundlage von Unterschieden und Ähnlichkeiten der Elektronenstruktur diskutiert.
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© 2010, Carl Hanser Verlag, München
Artikel in diesem Heft
- Veranstaltungen/Events
- Veranstaltungen in Zusammenarbeit mit der AWT
- HTM-Praxis
- HTM Praxis
- Inhalt/Contents
- Inhalt/Contents
- Fachbeiträge/Technical Contributions
- Die Bedeutung der t10/7-Zeit für die Wärmebehandlung hochlegierter Stähle
- Interstitial elements in steel: effect on structure and properties
- Corrosion of stainless PM tool steels: Interpretation of current density potential curves in acid environments
- Korrosionsbeständige Metall-Matrix-Composite
- Verzugsarme Wärmebehandlung niedriglegierter Werkzeugstähle
- Neuere Werkzeugwerkstoffe für das Druckgießen
- Wälzlager aus höher legierten Stählen
- Computer assisted development of high alloyed steels for hydrogen applications
Artikel in diesem Heft
- Veranstaltungen/Events
- Veranstaltungen in Zusammenarbeit mit der AWT
- HTM-Praxis
- HTM Praxis
- Inhalt/Contents
- Inhalt/Contents
- Fachbeiträge/Technical Contributions
- Die Bedeutung der t10/7-Zeit für die Wärmebehandlung hochlegierter Stähle
- Interstitial elements in steel: effect on structure and properties
- Corrosion of stainless PM tool steels: Interpretation of current density potential curves in acid environments
- Korrosionsbeständige Metall-Matrix-Composite
- Verzugsarme Wärmebehandlung niedriglegierter Werkzeugstähle
- Neuere Werkzeugwerkstoffe für das Druckgießen
- Wälzlager aus höher legierten Stählen
- Computer assisted development of high alloyed steels for hydrogen applications