Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains
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in: Materials Research Letters, Jahrgang 11.2023, Nr. 12, 15.11.2023, S. 1063-1072.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains
AU - Willenshofer, Patrick
AU - Tunes, Matheus Araujo
AU - Kainz, Christina
AU - Renk, Oliver
AU - Kremmer, Thomas
AU - Gneiger, Stefan
AU - Uggowitzer, Peter
AU - Pogatscher, Stefan
N1 - Publisher Copyright: © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2023/11/15
Y1 - 2023/11/15
N2 - Crossover aluminium alloys have recently been introduced as a new class of coarse-grained age-hardenable alloys. Here, we study the evolution of precipitation of the T-phase — Mg32(Zn,Al)49-phase — in a 5xxx/7xxx crossover alloy with coarse- and ultrafined microstructures. Both alloys were examined using differential scanning calorimetry, X-ray diffraction and in situ transmission electron microscopy. The ultrafine-grained alloy revealed significant different and accelerated precipitation behaviour due to grain boundaries acting as fast diffusion paths. Additionally, the ultrafine-grained alloy revealed high resistance to grain growth upon heating, an effect primarily attributed to inter-granular precipitation synergistically with trans-granular precipitation of T-phase.
AB - Crossover aluminium alloys have recently been introduced as a new class of coarse-grained age-hardenable alloys. Here, we study the evolution of precipitation of the T-phase — Mg32(Zn,Al)49-phase — in a 5xxx/7xxx crossover alloy with coarse- and ultrafined microstructures. Both alloys were examined using differential scanning calorimetry, X-ray diffraction and in situ transmission electron microscopy. The ultrafine-grained alloy revealed significant different and accelerated precipitation behaviour due to grain boundaries acting as fast diffusion paths. Additionally, the ultrafine-grained alloy revealed high resistance to grain growth upon heating, an effect primarily attributed to inter-granular precipitation synergistically with trans-granular precipitation of T-phase.
KW - DSC
KW - in situ transmission electron microscopy
KW - Precipitation of T-phase ()
KW - ultrafine-grained aluminium crossover alloys
KW - XRD
UR - http://www.scopus.com/inward/record.url?scp=85177027718&partnerID=8YFLogxK
U2 - 10.1080/21663831.2023.2281589
DO - 10.1080/21663831.2023.2281589
M3 - Article
VL - 11.2023
SP - 1063
EP - 1072
JO - Materials Research Letters
JF - Materials Research Letters
SN - 2166-3831
IS - 12
ER -
