Effect of chemical and mechanical treatment on the stability of Zr/sub 76/Fe/sub 24/ metallic glass
Journal Article
·
· J. Appl. Phys.; (United States)
OSTI ID:5313535
We demonstrate that mechanical grinding and chemical etching dramatically reduce the thermal stability of the eutectic Zr/sub 76/Fe/sub 24/ metallic glasses. Using differential scanning calorimetry and x-ray diffractometry, it is shown that this effect is due to the activation of a surface crystallization process associated with out-diffusion of zirconium and subsequent formation of a Zr/sub 2/Fe+..cap alpha..Zr crystalline layer. The kinetics and bulk crystallization are analyzed in detail for the etched samples using the concept of the local value of the Avrami exponent.
- Research Organization:
- Laser Physics Centre, Research School of Physical Sciences, The Australian National University, GPO Box 4, Canberra, ACT 2601, Australia
- OSTI ID:
- 5313535
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:1; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CALORIMETRY
COHERENT SCATTERING
COMMINUTION
CRYSTALLIZATION
DIFFRACTION
DIFFUSION
ETCHING
GRINDING
IRON ALLOYS
KINETICS
MACHINING
METALLIC GLASSES
PHASE TRANSFORMATIONS
SCATTERING
STABILITY
SURFACE FINISHING
SURFACE TREATMENTS
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CALORIMETRY
COHERENT SCATTERING
COMMINUTION
CRYSTALLIZATION
DIFFRACTION
DIFFUSION
ETCHING
GRINDING
IRON ALLOYS
KINETICS
MACHINING
METALLIC GLASSES
PHASE TRANSFORMATIONS
SCATTERING
STABILITY
SURFACE FINISHING
SURFACE TREATMENTS
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS