Biswas, Krishanu and Phanikumar, Gandham and Herlach, Dieter M and Chattopadhyay, Kamanio (2007) Non-equilibrium solidification of concentrated Fe–Ge alloys. In: Materials Science and Engineering A, 449-45 . pp. 12-17.
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Abstract
The solidification of concentrated alloys containing ordered compounds is less well understood. These alloys often exhibit complex phase change like peritectic reaction during liquid to solid transformation. The Fe-rich part of Fe–Ge binary alloy system consists of several critical points and ordered–disorder transitions and can be used as a model system to study the effect of departure from equilibrium on the solidification microstructure. In order to understand the phase selection and morphological transitions, undercooling and recalescence behaviour; growth rate of the solidifying phases and microstructure need to be explored.In the present paper, we summarise the results obtained in several iron rich alloy compositions (Fe–(14–25) at.% Ge) using techniques of melt quenching, levitation and laser resolidification. These results provide insight to the current theories of dendritic growth and reveals possibility of a new pathway for phase evolution in peritectic alloys at high undercooling involving a massive transformation.
Item Type: | Journal Article |
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Publication: | Materials Science and Engineering A |
Publisher: | Elsevier |
Additional Information: | Copyright of this article belongs to Elsevier. This article is also published in Proceedings of the 12th International Conference on Rapidly Quenched & Metastable Materials. |
Keywords: | Undercooling;Containerless processing;Rapid solidification;Metastable phases;Laser resolidification. |
Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
Date Deposited: | 28 Jul 2008 |
Last Modified: | 19 Sep 2010 04:48 |
URI: | http://eprints.iisc.ac.in/id/eprint/15259 |
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