Using standard Pt alloys with 7, 10, and 15 Rh, the authors investigated the contribution, during creeping, of intergranular deformation to total specimen elongation at temperatures of 1350, 1400, and 1500 degrees and stresses of 0.2, 0.5, and 1.3 kgsq mm. In all cases, intergranular deformation was found to be significantly less pronounced than overall specimen elongation, with its contribution to total elongation decreasing inversely to creep time. During the steady-state creep stage the relative grain displacement vector is directly proportional to both overall and intragranular deformation. Author
Edited trans. of Izvestiya Vysshikh Uchebnykh Zavedenii. Tsvetnaya Metallurgiya (USSR) n3 p140-143 1969, by R. J. Zeccola.