Growth ledges on silver-segregated θ′ (Al2Cu) precipitates

Julian Rosalie, Laure Bourgeois

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch


The interfacial structure and composition of θ′ (Al2Cu) 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) θ′-Al interfaces of the precipitates (1). Despite the presence of this layer, growth ledges were observed on the θ′ phase and thickening of the precipitates was able to proceed via ledges of step height 0.5c(θ′).

Original languageEnglish
Title of host publicationLight Metals 2013
Subtitle of host publicationProceedings of the Symposia Sponsored by the TMS Aluminum Committee at the TMS 2013 Annual Meeting & Exhibition
EditorsBarry A. Sadler
Place of PublicationCham Switzerland
Number of pages5
ISBN (Electronic)9783319651361
ISBN (Print)9783319651354
Publication statusPublished - 2016
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

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


ConferenceThe Minerals, Metals & Materials Society Annual Meeting and Exhibition 2013
Abbreviated titleTMS Annual 2013
Country/TerritoryUnited States of America
CitySan Antonio
Internet address


  • Aluminium alloys
  • Interfaces
  • Ledges
  • Precipitation
  • Segregation

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