Glass formation and crystallization in rapidly solidified zirconium alloys

Banerjee, S. ; Savalia, R. T. ; Dey, G. K. (2001) Glass formation and crystallization in rapidly solidified zirconium alloys Materials Science and Engineering A, 304-306 . pp. 26-33. ISSN 0921-5093

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Zirconium-based alloys offer an unique opportunity for studying various aspects of metallic glass, namely glass forming ability, crystallisation modes and kinetics, diffusion mechanisms and formation of glass in bulk. Thermodynamic and kinetic rationale for glass formation have been summarised in binary and ternary metalloid free amorphous alloys rich in zirconium. A comparison has been made between the microstructures of the alloys obtained under different cooling rates in order to understand the process of solidification and the process of phase selection. The different types of nucleation processes and the growth mechanisms of crystals in the undercooled melts of Zr-based glass forming alloys have been investigated. Primary, eutectic as well as polymorphic crystallisation have been observed in the alloys of this class of materials. Crystal nucleation and growth kinetics during crystallisation has been examined.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Crystallisation; Polymorphic; Nucleation
ID Code:82475
Deposited On:10 Feb 2012 15:32
Last Modified:10 Feb 2012 15:32

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