Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains

Patrick Willenshofer; Matheus Tunes; Christina Laura Kainz; Oliver Renk; Thomas M. Kremmer; Stefan Gneiger; Peter J. Uggowitzer; Stefan Pogatscher

doi:10.1080/21663831.2023.2281589

Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains

Patrick Willenshofer, Matheus Tunes, Christina Laura Kainz, Oliver Renk, Thomas M. Kremmer, Stefan Gneiger, Peter J. Uggowitzer, Stefan Pogatscher

LKR Light Metals Technologies

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	1063-1072
Number of pages	10
Journal	Materials Research Letters
Volume	11
Issue number	12
DOIs	https://doi.org/10.1080/21663831.2023.2281589
Publication status	Published - 2 Dec 2023

Research Field

Casting Processes for High Performance Materials

Keywords

Dsc
Precipitation of T-phase(Mg-32(ZnAl)(49))
Xr
In situtransmission electronmicroscopy
Ultrafine-grained aluminiumcrossover alloys

Access to Document

10.1080/21663831.2023.2281589

Cite this

@article{44194507e4974983a87b884805b8e9bb,

title = "Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains",

abstract = "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.",

keywords = "Dsc, Precipitation of T-phase(Mg-32(ZnAl)(49)), Xr, In situtransmission electronmicroscopy, Ultrafine-grained aluminiumcrossover alloys",

author = "Patrick Willenshofer and Matheus Tunes and Kainz, {Christina Laura} and Oliver Renk and Kremmer, {Thomas M.} and Stefan Gneiger and Uggowitzer, {Peter J.} and Stefan Pogatscher",

year = "2023",

month = dec,

day = "2",

doi = "10.1080/21663831.2023.2281589",

language = "English",

volume = "11",

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journal = "Materials Research Letters",

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TY - JOUR

T1 - Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grains

AU - Willenshofer, Patrick

AU - Tunes, Matheus

AU - Kainz, Christina Laura

AU - Renk, Oliver

AU - Kremmer, Thomas M.

AU - Gneiger, Stefan

AU - Uggowitzer, Peter J.

AU - Pogatscher, Stefan

PY - 2023/12/2

Y1 - 2023/12/2

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 - Precipitation of T-phase(Mg-32(ZnAl)(49))

KW - Xr

KW - In situtransmission electronmicroscopy

KW - Ultrafine-grained aluminiumcrossover alloys

U2 - 10.1080/21663831.2023.2281589

DO - 10.1080/21663831.2023.2281589

M3 - Article

SN - 2166-3831

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EP - 1072

JO - Materials Research Letters

JF - Materials Research Letters

IS - 12

ER -