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Coarsening resistance of MC carbides in secondary hardening steels: Part I. Theoretical model for multicomponent coarsening kinetics.
- Source :
- Metallurgical transactions. Part A: Physical Metallurgy & Materials Science; 1991, Vol. 22 Issue 12, p2863-2868, 6p
- Publication Year :
- 1991
-
Abstract
- The development of very high-strength levels in many alloy steels is achieved by a secondary hardening reaction. In high Co-Ni steels containing the strong carbide-forming elements Mo, Cr, and W, secondary hardening is accomplished by the precipitation of fine-scale MC alloy carbides. Coarsening resistance of the MC precipitates depends on the alloy content of these elements, and there should be an addition to the alloy of these carbide-forming elements which optimizes the MC coarsening resistance. Current Lifshitz-Slyozov-Wagner (LSW) theory cannot properly be used to describe, the coarsening behavior of multicomponent carbides, which involves concentrations and diffusivities of two or more solutes and nonspherical carbide morphologies. A model is introduced for the coarsening resistance of multicomponent carbides. This model treats the coarsening of shape-preserving particle and is applicable to rodlike particles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03602133
- Volume :
- 22
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Metallurgical transactions. Part A: Physical Metallurgy & Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 73005717
- Full Text :
- https://doi.org/10.1007/BF02650247