The effects of environment on surface pit formation in aluminium
- 1 March 1966
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 13 (123), 453-464
- https://doi.org/10.1080/14786436608212639
Abstract
High temperature metallographic techniques have been used to observe the formation and disappearance of vacancy condensation pits under a variety of environmental conditions. The phenomenon has been shown to bear a close relationship to surface oxidation. Treatment in vacuo completely inhibits pit formation. Large vacancy condensation pits are formed on aluminium by quenching under an argon atmosphere. The formation of secondary pits during repeated cycling suggests some relationship with the points of emergence of dislocations. Higher temperatures are required to form the pits under argon than in air.Keywords
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