ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract A mathematical procedure is proposed in order to determine separately the activation energy for nucleation,E n, and for growth,E g, from isothermal crystallization experiments on metallic glasses. Differential scanning calorimetry (DSC) is used in the isothermal mode to estimate the crystalline fraction as a function of time. The model deals only with polymorphic and eutectic growth. Cu60Zr40 amorphous alloys produced with different quenching rates are taken as an example for demonstrating the ability of the proposed method. It is shown that the number of pre-nuclei can be related to the conditions of the initial quench.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02403006
Permalink