Affiliation:
1. Okayama University of Science
Abstract
Fractography was used in order to investigate the effects of Ta addition on the
diffusion behavior of carbon in molybdenum. Mo-1.5mass%Ta alloy was carburized by the
solid-state carburization process at a temperature between 1073 and 1473 K. Fracture surface of
the specimen was observed before and after the carburization process and carbon diffusion distance
was estimated from the change in fracture mode as a function of distance from the specimen surface.
Results are as follows. (1) Ta addition slightly decreased the carbon diffusion distance. (2) Ta
addition had almost no effect on the activation energy for diffusion. (3) These results suggest
preferential combination between carbon atoms and Ta atoms is only minor.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Reference8 articles.
1. A.I. Nakonecnikov, L.V. Pavlinov, V.N. Bykov: Fiz. Met. I. Metalloved., Vol. 22(1966), p.234.
2. P.S. Rudman: Trans. Metall. Soc. AIME, Vol. 239(1967), p. (1949).
3. J. Kunze, W. Reichelt: J. Less-Common Met., Vol. 20(1970), p.327.
4. Y. Hiraoka et al.: J. Alloys & Compounds, Vol. 377(2004), p.127.
5. For example, Y. Hiraoka, M. Okada and R. Watanabe: J. Less-Common Met., Vol. 75(1980), p.31.