DEFORMATION CHARACTERISTICS OF METALS AND ALLOYS.

Abstract

The effects of deformation during a phase transformation were studied on the three plain carbon steels AISI 1018, 1045 and 1095, the bearing steel AISI 52100 and commercially pure titanium. Specimens subjected to a constant load were cycled through the alpha reversibly yields gamma or alpha reversibly yields beta transformation range. A considerable increase in the creep rate is observed due to the occurrence of the phase transformations. For the steels, the elongation per complete temperature cycle increases linearly with the applied stress up to 2500 psi and elongations of 500 percent and more are observed on specimens temperature cycled to complete failure. It is further shown that on heating (alpha yields gamma transformation) the steels investigated deform more than on cooling (gamma yields alpha transformation). Titanium also exhibits a linear relationship between the elongation per temperature cycle and the applied stress, and gives an elongation of approx. 300% when temperature cycled to failure. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1965
Accession Number
AD0624267

Entities

People

  • D. Oelschlagel
  • R. Kot
  • V. Weiss

Organizations

  • Syracuse University

Tags

DTIC Thesaurus Topics

  • Alloys
  • Carbon Steels
  • Critical Temperature
  • Elongation
  • Glass Transition Temperature
  • Metals
  • Phase Transformations
  • Steel
  • Titanium
  • Transition Temperature

Readers

  • Analytical Mechanics
  • Metallurgy
  • Structural Health Monitoring of Composite Structures.