SYMPOSIA PAPER Published: 01 January 1982
STP28901S

An Evaluation of Deformation Models for Grain Boundary Sliding

Source

Grain boundary sliding is an important deformation process during high-temperature creep. Sliding often makes a significant contribution to the total creep strain of the specimen and, in addition, the sliding process is important in the nucleation, growth, and subsequent linkage of intergranular cavities.

The various theoretical deformation models for grain boundary sliding are reviewed, and it is shown that they fall into two groups depending on whether they relate to intrinsic sliding or to sliding with an associated accommodation process. Published experimental data on grain boundary sliding are tabulated for a number of different metals for comparison with the theoretical models, and the data are supplemented with recent results obtained on aluminum. It is demonstrated that all the available models lead to predictions which are inconsistent with one or more of the trends observed experimentally.

Author Information

Langdon, TG
University of Southern California, Los Angeles, Calif.
Vastava, RB
Aircraft Group-Manufacturing Technology, Northrop Corporation, Hawthorne, Calif.
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E28
Pages: 435–451
DOI: 10.1520/STP28901S
ISBN-EB: 978-0-8031-4830-7
ISBN-13: 978-0-8031-0737-3