Effect of Quench Rate on the Structural Relaxation of a Metallic Glass.

Abstract

Measurements of the ferromagnetic Curie temperature, Tc, have been used to monitor the structural relaxation of the metallic glass Fe81.5B14.5Si4. The glass was produced by melt-spinning to various ribbon thicknesses at consequently different quench rates. It is shown that faster quenched (i.e. thinner) ribbons have lower initial Tc's, corresponding to less relaxed structures. All the materials, however, tend to the same equilibrium on annealing. An effect which is particularly marked at low annealing temperatures is that faster quenched ribbons relax faster. The results are interpreted in terms of two relaxation mechanisms.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1982
Accession Number
ADA109906

Entities

People

  • A. L. Greer

Organizations

  • Harvard University

Tags

DTIC Thesaurus Topics

  • Amorphous Materials
  • Annealing
  • Crystallization
  • Curie Temperature
  • Electron Microscopy
  • Fiber Spinning
  • Heat Transfer
  • Heating
  • Low Temperature
  • Magnetic Properties
  • Materials
  • Measurement
  • Metallic Glass
  • Military Research
  • Phase
  • Transmission Electron Microscopy
  • Transport Properties

Fields of Study

  • Materials science
  • Physics

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Powder metallurgy of Titanium alloys.