Precipitates in an Al-Mg-Ge alloy studied by aberration-corrected scanning transmission electron micrscopy

Reuben Bjorge, Philip Nakashima, Calin Marioara, Sigmund Andersen, Barrington Muddle, Joanne Etheridge, Randi Holmestad

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The precipitates present in an Al–0.59Mg–0.71Ge (at.%) alloy have been studied using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy. Two types of needle-shaped precipitates growing along 〈0 0 1〉Al were found: a phase isostructural to the trigonal U1 phase found in Al–Mg–Si alloys, and finer precipitates with a hexagonal arrangement of Ge columns. The study revealed the presence of a complex interface structure surrounding the U1-like precipitates, and an explanation based on interatomic distances is proposed.
Original languageEnglish
Pages (from-to)6103 - 6109
Number of pages7
JournalActa Materialia
Volume59
Issue number15
DOIs
Publication statusPublished - 2011

Cite this

Bjorge, Reuben ; Nakashima, Philip ; Marioara, Calin ; Andersen, Sigmund ; Muddle, Barrington ; Etheridge, Joanne ; Holmestad, Randi. / Precipitates in an Al-Mg-Ge alloy studied by aberration-corrected scanning transmission electron micrscopy. In: Acta Materialia. 2011 ; Vol. 59, No. 15. pp. 6103 - 6109.
@article{74ef0eb31b1349398a5b3d53089d5584,
title = "Precipitates in an Al-Mg-Ge alloy studied by aberration-corrected scanning transmission electron micrscopy",
abstract = "The precipitates present in an Al–0.59Mg–0.71Ge (at.{\%}) alloy have been studied using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy. Two types of needle-shaped precipitates growing along 〈0 0 1〉Al were found: a phase isostructural to the trigonal U1 phase found in Al–Mg–Si alloys, and finer precipitates with a hexagonal arrangement of Ge columns. The study revealed the presence of a complex interface structure surrounding the U1-like precipitates, and an explanation based on interatomic distances is proposed.",
author = "Reuben Bjorge and Philip Nakashima and Calin Marioara and Sigmund Andersen and Barrington Muddle and Joanne Etheridge and Randi Holmestad",
year = "2011",
doi = "10.1016/j.actamat.2011.06.021",
language = "English",
volume = "59",
pages = "6103 -- 6109",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier",
number = "15",

}

Precipitates in an Al-Mg-Ge alloy studied by aberration-corrected scanning transmission electron micrscopy. / Bjorge, Reuben; Nakashima, Philip; Marioara, Calin; Andersen, Sigmund; Muddle, Barrington; Etheridge, Joanne; Holmestad, Randi.

In: Acta Materialia, Vol. 59, No. 15, 2011, p. 6103 - 6109.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Precipitates in an Al-Mg-Ge alloy studied by aberration-corrected scanning transmission electron micrscopy

AU - Bjorge, Reuben

AU - Nakashima, Philip

AU - Marioara, Calin

AU - Andersen, Sigmund

AU - Muddle, Barrington

AU - Etheridge, Joanne

AU - Holmestad, Randi

PY - 2011

Y1 - 2011

N2 - The precipitates present in an Al–0.59Mg–0.71Ge (at.%) alloy have been studied using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy. Two types of needle-shaped precipitates growing along 〈0 0 1〉Al were found: a phase isostructural to the trigonal U1 phase found in Al–Mg–Si alloys, and finer precipitates with a hexagonal arrangement of Ge columns. The study revealed the presence of a complex interface structure surrounding the U1-like precipitates, and an explanation based on interatomic distances is proposed.

AB - The precipitates present in an Al–0.59Mg–0.71Ge (at.%) alloy have been studied using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy. Two types of needle-shaped precipitates growing along 〈0 0 1〉Al were found: a phase isostructural to the trigonal U1 phase found in Al–Mg–Si alloys, and finer precipitates with a hexagonal arrangement of Ge columns. The study revealed the presence of a complex interface structure surrounding the U1-like precipitates, and an explanation based on interatomic distances is proposed.

UR - http://www.elsevier.com/locate/actamat

U2 - 10.1016/j.actamat.2011.06.021

DO - 10.1016/j.actamat.2011.06.021

M3 - Article

VL - 59

SP - 6103

EP - 6109

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 15

ER -