材料期刊网

Dynamic strain aging (DSA) in a newly developed Ni-Co superalloy, TMW-2, was examined at temperatures ranging from room temperature to 600 degrees C and strain rates between 3 x 10(-2) and 8 x 10(-5) s(-1). The alloy exhibited both normal and inverse DSA effects at the temperatures and strain rates tested. Transmission electron microscopy evidence suggests that the normal behavior is associated with conventional DSA due to dynamic dislocation-solute interaction, while the inverse behavior may be related to the occurrence of stacking faults. Crown Copyright (C) 2010 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.