Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

Precipitation of the ? (Al 2Cu) phase was examined in Al-(1.75-x) at. Cu-x at. Ag alloys. In alloys containing trace Ag the ? precipitates formed T- or cross-shaped arrays of sympathetically-nucleated arrays similar to those reported in binary Al-Cu alloys. However, in alloys with equal atomic levels of copper and silver the ? plates formed at specific sites on dislocation loops alongside pre-existing ? (AlAg 2) precipitates. The dislocation loops appeared to dissociate at these sites in a manner which would provide a stacking fault that was isostructural with the ? precipitate. Energy dispersive X-ray (EDX) mapping showed that the dislocation loops were silver-enriched at the sites where the ? phase eventually precipitated and that a silver atmosphere remained after precipitation of the ? plates.
Original languageEnglish
Title of host publicationLight Metals 2012
EditorsCarlos E Suarez
Place of PublicationHoboken NJ USA
PublisherJohn Wiley & Sons
Pages307-312
Number of pages6
ISBN (Print)9781118291399
DOIs
Publication statusPublished - 2012
EventLight Metals 2012 - TMS 2012 Annual Meeting and Exhibition - Orlando, United States of America
Duration: 11 Mar 201215 Mar 2012
Conference number: 141st

Conference

ConferenceLight Metals 2012 - TMS 2012 Annual Meeting and Exhibition
CountryUnited States of America
CityOrlando
Period11/03/1215/03/12
Other Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 2012 Annual Meeting & Exhibition, Orlando, Florida, USA March 11-15,2012

Cite this

Rosalie, J., Bourgeois, L. N., & Muddle, B. C. (2012). Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  . In C. E. Suarez (Ed.), Light Metals 2012 (pp. 307-312). Hoboken NJ USA: John Wiley & Sons. https://doi.org/10.1002/9781118359259.ch52
Rosalie, Julian ; Bourgeois, Laure Nelly ; Muddle, Barrington Charles. / Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  . Light Metals 2012. editor / Carlos E Suarez. Hoboken NJ USA : John Wiley & Sons, 2012. pp. 307-312
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abstract = "Precipitation of the ? (Al 2Cu) phase was examined in Al-(1.75-x) at. Cu-x at. Ag alloys. In alloys containing trace Ag the ? precipitates formed T- or cross-shaped arrays of sympathetically-nucleated arrays similar to those reported in binary Al-Cu alloys. However, in alloys with equal atomic levels of copper and silver the ? plates formed at specific sites on dislocation loops alongside pre-existing ? (AlAg 2) precipitates. The dislocation loops appeared to dissociate at these sites in a manner which would provide a stacking fault that was isostructural with the ? precipitate. Energy dispersive X-ray (EDX) mapping showed that the dislocation loops were silver-enriched at the sites where the ? phase eventually precipitated and that a silver atmosphere remained after precipitation of the ? plates.",
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Rosalie, J, Bourgeois, LN & Muddle, BC 2012, Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  . in CE Suarez (ed.), Light Metals 2012. John Wiley & Sons, Hoboken NJ USA, pp. 307-312, Light Metals 2012 - TMS 2012 Annual Meeting and Exhibition, Orlando, United States of America, 11/03/12. https://doi.org/10.1002/9781118359259.ch52

Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  . / Rosalie, Julian; Bourgeois, Laure Nelly; Muddle, Barrington Charles.

Light Metals 2012. ed. / Carlos E Suarez. Hoboken NJ USA : John Wiley & Sons, 2012. p. 307-312.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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N2 - Precipitation of the ? (Al 2Cu) phase was examined in Al-(1.75-x) at. Cu-x at. Ag alloys. In alloys containing trace Ag the ? precipitates formed T- or cross-shaped arrays of sympathetically-nucleated arrays similar to those reported in binary Al-Cu alloys. However, in alloys with equal atomic levels of copper and silver the ? plates formed at specific sites on dislocation loops alongside pre-existing ? (AlAg 2) precipitates. The dislocation loops appeared to dissociate at these sites in a manner which would provide a stacking fault that was isostructural with the ? precipitate. Energy dispersive X-ray (EDX) mapping showed that the dislocation loops were silver-enriched at the sites where the ? phase eventually precipitated and that a silver atmosphere remained after precipitation of the ? plates.

AB - Precipitation of the ? (Al 2Cu) phase was examined in Al-(1.75-x) at. Cu-x at. Ag alloys. In alloys containing trace Ag the ? precipitates formed T- or cross-shaped arrays of sympathetically-nucleated arrays similar to those reported in binary Al-Cu alloys. However, in alloys with equal atomic levels of copper and silver the ? plates formed at specific sites on dislocation loops alongside pre-existing ? (AlAg 2) precipitates. The dislocation loops appeared to dissociate at these sites in a manner which would provide a stacking fault that was isostructural with the ? precipitate. Energy dispersive X-ray (EDX) mapping showed that the dislocation loops were silver-enriched at the sites where the ? phase eventually precipitated and that a silver atmosphere remained after precipitation of the ? plates.

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Rosalie J, Bourgeois LN, Muddle BC. Precipitation of the θ'(Al2Cu) phase in Al-Cu-Ag alloys  . In Suarez CE, editor, Light Metals 2012. Hoboken NJ USA: John Wiley & Sons. 2012. p. 307-312 https://doi.org/10.1002/9781118359259.ch52