Accession Number:

ADA184500

Title:

Ultra-Fine Grained Alloy Material.

Descriptive Note:

Contractor rept.,

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD

Personal Author(s):

Report Date:

1987-06-01

Pagination or Media Count:

50.0

Abstract:

Thermomechanical processing has been applied to selected alloys to produce enhanced ductility. A fine-grained microstructure at high ductility was produced in eutectic lead-tin and lead-antimony. Melt-extracted fibers of lead-antimony were also produced and exhibited high ductility. Microstructural analyses were performed using optical and X-ray methods. It was concluded that ductility enhancement was due to the presence of large quantities of metastable, disordered grain boundary material.

Subject Categories:

  • Properties of Metals and Alloys
  • Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE