Journal Article

FZJ-2017-01026

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Al-rich Region of Al-Cu-Mn

Grushko, B. (Corresponding author)FZJ* ; Mi, S.

2016
Elsevier Lausanne

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Please use a persistent id in citations: doi:10.1016/j.jallcom.2016.07.075

Abstract: The Al–Cu–Mn alloy system was studied above 45 at.% Al between 550 and 910 °C by scanning electron microscopy, powder X-ray diffraction and differential thermal analysis. A wide ternary region of the so-called β-phase extending along ∼50 at.% Al was confirmed. It has a CsCl-type structure with a ≈ 0.292–0.298 nm. The total γ1/γ2-region extends from Al–Mn up to ∼17 at.% Cu and the high-temperature T-Al3Mn phase (Pnma, a ≈ 1.48, b ≈ 1.24, c ≈ 1.25 nm) extends up to ∼15 at.% Cu. The so-called R-phase (Bbmm, a ≈ 2.41, b ≈ 1.25, c ≈ 0.76 nm) was found to exist in a compositional region of Al74-80Cu5-12.5Mn12.5-18. The ternary phase earlier reported at Al57.9Cu26.3Mn15.8 was confirmed. It exists below 697 °C in a compositional region of Al55-58Cu29-37Mn7.5-14. The decagonal D3-phase was concluded to be stable in a compositional region of Al61.5-68.5Cu19-29.5Mn9-16. Below 631 °C an fcc phase (a = 0.5814 nm) was revealed around ∼ Al60Cu36.5Mn3.5. Partial isothermal sections at 550, 600, 650, 750, 850 and 910 °C were constructed.

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Contributing Institute(s):

1. Mikrostrukturforschung (PGI-5)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2016

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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