Institute of Metals Division - Grain Boundary Sliding Versus Grain Boundary Migration in Creep (TN)
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 2
- File Size:
- 181 KB
- Publication Date:
- Jan 1, 1961
Abstract
It has been suggested that grain boundary motion during creep is a two-stage process, i.e., sliding followed by migration. Wienbergl found alternate sliding and migration of aluminum tricrystals tested in shear. He concluded that curves of grain boundary sliding (G. B. S.) vs time were not reproducible from specimen to specimen. Couling and Roberts,' who worked on polycrystalline magnesium, found that sliding and migration were interdependent. They were able to correlate the amount of sliding with the number of sliding-migration cycles, i.e., the amount of migration observed metallographically. Rhines, Bond, and Kissel found that the curves of grain boundary sliding vs time were spasmodic but they did not find any migration of the boundary. Some recent creep tests on bicrystals of high-purity zinc (99.99 pct) help to elucidate the role of grain boundary migration in the G. B. S. process. The experimental technique and apparatus are described elsewhere. The tests were conducted in vacuum or a protective atmosphere of argon. All specimens were stressed in simple shear along
Citation
APA: (1961) Institute of Metals Division - Grain Boundary Sliding Versus Grain Boundary Migration in Creep (TN)
MLA: Institute of Metals Division - Grain Boundary Sliding Versus Grain Boundary Migration in Creep (TN). The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1961.