Transactions of the Indian Institute of Metals

, Volume 65, Issue 6, pp 565–570 | Cite as

Comparative Studies of Different Methods for Determining Crystallization Kinetics of Metallic Glass

  • A. Barman
  • C. Chattopadhayay
  • S. Sangal
  • K. Mondal
Technical Paper
  • 166 Downloads

Abstract

Different non-isothermal and isothermal techniques are used to find out the phase transformation kinetic parameters (in this case, activation energy [E] of crystallization, Avrami exponent [n] and frequency factor [k 0]) for the crystallization of a newly developed four component Zr58Cu22Al12Ag8 glassy alloy using differential scanning calorimetry (DSC) data. A comparative study is carried out to understand the effectiveness of different methods of evaluation of crystallization kinetic parameters from the DSC traces. n for the alloy varies in the range of 2.5–4 suggesting that growth varies from one to three dimensional with growth mechanism varying from diffusion controlled 3D growth to an interface controlled 1D growth.

Keywords

Crystallization Bulk metallic glass Differential scanning calorimetry 

Notes

Acknowledgments

Authors appreciate the financial support extended by Naval Research Board (NRB), Govt. of India (Project no: NRB/MET/20090196) for doing this work. The authors also appreciate Dr. K. Hono of NIMS, Japan for allowing preparation of samples at his laboratory.

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Copyright information

© Indian Institute of Metals 2012

Authors and Affiliations

  • A. Barman
    • 1
  • C. Chattopadhayay
    • 1
  • S. Sangal
    • 1
  • K. Mondal
    • 1
  1. 1.Department of Materials Science and EngineeringIndian Institute of TechnologyKanpurIndia

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