Growth ledges on silver-segregated theta' (Al2Cu) precipitates

Julian Rosalie, Laure Nelly Bourgeois

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Abstract

The interfacial structure and composition of theta (Al 2Cu) precipitates in Al-0.9at. Cu-0.9at. Ag alloys were examined using high resolution electron microscopy. High angle annular dark field scanning transmission electron microscope (HAADF-STEM) images showed the presence of a silver(Ag)-rich bi-layer on the coherent (100) ? -Al interfaces of the precipitates (1). Despite the presence of this layer, growth ledges were observed on the ? phase and thickening of the precipitates was able to proceed via ledges of step height 0.5c(? ).
Original languageEnglish
Title of host publicationLight Metals 2013: Aluminium Alloys: Fabrication, Characterization and Applications
EditorsBarry Sadler
Place of PublicationHoboken, NJ United States of America
PublisherJohn Wiley & Sons
Pages367 - 371
Number of pages5
ISBN (Print)9781118605721
DOIs
Publication statusPublished - 2013
EventThe Minerals, Metals & Materials Society Annual Meeting and Exhibition 2013 - Henry B. Gonzalez Convention Center, San Antonio, United States of America
Duration: 3 Mar 20137 Mar 2013
Conference number: 142nd
http://www.tms.org/meetings/annual-13/AM13home.aspx
https://www.tms.org/meetings/annual-13/AM13home.aspx

Conference

ConferenceThe Minerals, Metals & Materials Society Annual Meeting and Exhibition 2013
Abbreviated titleTMS Annual 2013
CountryUnited States of America
CitySan Antonio
Period3/03/137/03/13
Internet address

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