Header menu link for other important links
X
Non-equilibrium solidification of concentrated Fe-Ge alloys
Krishanu Biswas, , Dieter M. Herlach, Kamanio Chattopadhyay
Published in Elsevier
2007
Volume: 448-451
   
Pages: 12 - 17
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. © 2006 Elsevier B.V. All rights reserved.
About the journal
JournalData powered by TypesetMaterials Science and Engineering A
PublisherData powered by TypesetElsevier
ISSN09215093
Open AccessNo
Concepts (12)
  •  related image
    Binary alloys
  •  related image
    Growth rate
  •  related image
    METASTABLE PHASES
  •  related image
    Morphology
  •  related image
    Order disorder transitions
  •  related image
    Rapid solidification
  •  related image
    UNDERCOOLING
  •  related image
    CONCENTRATED ALLOYS
  •  related image
    CONTAINERLESS PROCESSING
  •  related image
    LASER RESOLIDIFICATION
  •  related image
    Iron alloys
  •  related image
    UNDERCOOLING