Superplasticity in Splat-Quenched Pb-Sn Eutectic.

Abstract

Lead-tin eutectic alloy tapes have been prepared by melt-spinning over a wide range of solidification conditions. In all cases, the rapid solidification produces a microstructure consisting of equiaxed lead-rich and tin-rich grains, approximately 4 micron in size. This microstructure could result from a divorced eutectic solidification process, or, more likely, from post-solidification, coarsening. Under tensile loading, the melt-spun lead-tin eutectic tapes exhibit superplastic deformation with large failure strains, a sigmoidal variation of log flow stress with log flow strain, a strain rate sensitivity of approximately 0.42, and an activation energy for superplastic flow of approx. 54KJ mole. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1980
Accession Number
ADA082046

Entities

People

  • B. Cantor
  • R. Cheese

Organizations

  • University of Sussex

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystal Growth
  • Crystals
  • Energy
  • Engineered Materials
  • Engineering
  • Equations
  • Eutectics
  • Fiber Spinning
  • Grain Boundaries
  • Grain Size
  • Heat Energy
  • Materials
  • Materials Engineering
  • Materials Science
  • Metallurgy
  • Regression Analysis
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Powder metallurgy of Titanium alloys.