Rate-controlling processes during creep of super-purity aluminium
- 1 May 1980
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 41 (5) , 665-680
- https://doi.org/10.1080/01418618008239341
Abstract
The response to a sudden reduction in applied stress during creep of single and polycrystalline aluminium has been compared with the behaviour recorded in conventional creep tests carried out in tension and compression. In addition, studies have been made of the dislocation arrangements and the surface deformation patterns developed during creep. The results obtained are compatible with a recovery model for creep based on diffusion-controlled growth and rearrangement of the three-dimensional dislocation network present within subgrains. These recovery processes lead to the development of link lengths in the network which are sufficiently long to act as dislocation sources, allowing slip to occur.Keywords
This publication has 11 references indexed in Scilit:
- Microscopic creep models and the interpretation of stress-drop tests during creepActa Metallurgica, 1977
- On the subgrain size dependence of creepPhilosophical Magazine, 1976
- Steady-state creep of single-phase crystalline matter at high temperatureJournal of Materials Science, 1976
- Stress changes during anelastic recovery in nimonic 90Scripta Metallurgica, 1975
- Work hardening and recovery during compressive creep of polycrystalline MgOJournal of Materials Science, 1974
- Stress-Change Experiments during High-Temperature Creep of Copper, Iron, and ZincMetal Science Journal, 1973
- On internal stress measurement and the mechanism of high temperature creepScripta Metallurgica, 1971
- A technique for measuring mean internal stress during high temperature creepScripta Metallurgica, 1969
- Work hardening and recovery in creepProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1966
- Theory of Steady-State Creep Based on Dislocation ClimbJournal of Applied Physics, 1955