Accession Number : AD0725003

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

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Dergunov,N. N. ; Barabanov,V. N. ; Kurakin,V. M. ; Zaitsev,G. G. ; Strokov,V. I.

Report Date : 19 FEB 1971

Pagination or Media Count : 14

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.

Descriptors :   (*GRAPHITE, MECHANICAL PROPERTIES), HIGH TEMPERATURE, MODULUS OF ELASTICITY, CREEP, HEAT OF ACTIVATION, IMPACT SHOCK, SHOCK RESISTANCE, USSR

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE