Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties · 1981 · 27 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceInterface ScienceMechanical Behavior Of MaterialsSolid State PhysicsCreep BehaviorCreep DeformationDeformation MechanismsDislocation MechanicsDislocation TheoryPlastic DeformationAustenitic Stainless SteelsDislocationsGrain BoundariesGrain Boundary SlidingHigh-temperature CreepPower-law CreepSteady-state CreepTwin Boundaries
Abstract Offsets due to grain boundary sliding have been observed at previously coherent annealing twin boundaries after high-temperature power-law creep of an austenitic stainless steel (Alloy 800). On average the magnitude of these offsets was 0middot;2-0middot;3 of that measured at 'general' grain boundaries. Sliding at twin boundaries contributed approximately 1middot;6% of the total strain during steady-state creep, while sliding at 'general' grain boundaries contributed 12-22%. Observations of dislocation structures in twin boundaries after creep suggest that twin boundary sliding is a direct result of the mobility of extrinsic boundary dislocations collected at these interfaces through interactions with matrix dislocations.
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On the role of grain boundary dislocations in high temperature creep
R.C. Pond, D. A. Smith, P. W. J. Southerden · Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties · 1978 · 123 citations
Natural Sciences, Materials Engineering, Materials Science +17
The Formation and Growth of Cavities in Creep
Y. Ishida, David McLean · Metal Science Journal · 1967 · 33 citations