Solidification of hastelloy alloys: an alternative interpretation

Author： Perricone M.   DuPont J.   Cieslak M.  

Publisher： Springer Publishing Company

ISSN： 1543-1940

Source： Metallurgical and Materials Transactions A, Vol.34, Iss.5, 2003-05, pp. : 1127-1132

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Abstract

HASTELLOY C-22 and C-276 are engineering nickel-based alloys that served as the focus of a comprehensive examination of the microstructural development of this class of materials presented previously by Cieslak et al. The work presented here provides a re-examination of this study. The use of computational thermodynamic algorithms combined with solidification-path calculations based on experimentally determined solute-partition data eliminates the need for many assumptions and serves as the basis for the solute-redistribution model that is presented here. A new series of solidification sequences for HASTELLOY C-22 and C-276 is proposed based on this model, and these conclusions are supported by the microstructural characterization presented in the previous work.

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