Carbon diffusivity in multi-component austenite

Carbon diffusivity in multi-component austenite

The diffusivity of carbon in multi-component austenite has been investigated using a thermodynamic-based analysis. The activity coefficient of carbon as a function of alloying elements and temperature was used to derive the carbon diffusivity as a function of composition and temperature. The strong...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Scripta materialia 2011-05, Vol.64 (9), p.805-808
Hauptverfasser: Lee, Seok-Jae, Matlock, David K., Van Tyne, Chester J.
Format: Artikel
Sprache:eng
Schlagworte:
Activity coefficients
Alloying element
Alloys
Austenite
Carbon
Carbon diffusivity
Chromium
Diffusion rate
Diffusivity
Mathematical analysis
Thermodynamic-based analysis
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The diffusivity of carbon in multi-component austenite has been investigated using a thermodynamic-based analysis. The activity coefficient of carbon as a function of alloying elements and temperature was used to derive the carbon diffusivity as a function of composition and temperature. The strong influence of chromium (which decreases carbon diffusion rates) was incorporated in the diffusivity equation. The equation for carbon diffusivity was verified by comparing calculated results with measured diffusivity of carbon for various alloys.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2011.01.001