Metal Processing Operations. Volume I: Grain Boundary and Sub-Boundary Strengthening in Aluminum at Room Temperature.
Abstract
Data on the room temperature strength of polycrystalline aluminum appearing in the literature, have been analysed to separate and to compare the strength contributions from grain boundaries and from sub-boundaries; it had been shown that, for the same boundary density, cold work and anneal sub-boundaries make a greater contribution to strength than grain boundaries. The analysis has also shown that hot work sub-boundaries make a smaller contribution than grain boundaries for subgrain and grain sizes larger than approximately 0.000003 m; below this size, however, hot work sub-boundaries make the greater contribution to strength, and this becomes comparable with the strength contribution expected from cold work and anneal sub-boundaries at about 0.000001 m. The sub-boundary strength data for hot work sub-boundaries are consistent with a model in which the density of dislocation sources in the sub-boundaries varies markedly with subgrain size.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1974
- Accession Number
- ADA002630
Entities
People
- D. J. Abson