Dislocation interaction with semicoherent precipitates ({Omega} phase) in deformed Al-Cu-Mg-Ag alloy
Journal Article
·
· Acta Materialia
- Univ. of Virginia, Charlottesville, VA (United States). Dept. of Materials Science and Engineering
The interaction between dislocations and semicoherent precipitates ({Omega} phase) is discussed. The investigation shows that the semicoherent precipitate is cut by dislocations during deformation. Conventional TEM and HRTEM observations demonstrate that shearing of precipitates by dislocations occurs by multiple cutting of the precipitate. A strengthening mechanism is proposed based on this observation. The general theory is not only applicable to the {Omega} precipitate in Al-Cu-Mg-Ag alloys, but also to semicoherent precipitates in other alloys.
- OSTI ID:
- 665202
- Journal Information:
- Acta Materialia, Journal Name: Acta Materialia Journal Issue: 15 Vol. 46; ISSN 1359-6454; ISSN ACMAFD
- Country of Publication:
- United States
- Language:
- English
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