Investigation of Short-Term Strength, Creep, and Impact Toughness of Graphite at 300-3500K. Experimental Procedure and Results,

Abstract

Measurements were made on graphites of different grain sizes. The modulus of elasticity increases steadily in the temp. range 300-2000K, reaches a max. at 3100K, and then decreases sharply up to 3500K. The magnitude of the activation energy of creep was almost consistent in the temp. range 2300-2900K and indicated that the mechanism was the sliding of dislocations. The high activation energy in the temp. range 2900-3100K indicated that creep was controlled by a diffusion mechanism at these temps. The impact strength decreased in the temp. range 300-2300K and then remained almost consistent up to 3000K.

Document Details

Document Type
Technical Report
Publication Date
Feb 19, 1971
Accession Number
AD0725003

Entities

People

  • G. G. Zaitsev
  • N. N. Dergunov
  • V. I. Strokov
  • V. M. Kurakin
  • V. N. Barabanov

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Diffusion
  • Dislocations
  • Elastic Properties
  • Energy
  • Grain Size
  • Graphitic Materials
  • Heat Of Activation
  • Impact Strength
  • Measurement
  • Mechanical Properties
  • Modulus Of Elasticity
  • Physical Properties
  • Toughness

Readers

  • Powder metallurgy of Titanium alloys.