Multiscale modification of aluminum alloys with deep cryogenic treatment for advanced properties

Matic Jovicevic-Klug; Levi Tegg; Patricia Jovicevic-Klug; Goran Dražic; László Almásy; Bryan Lim; Julie M. Cairney; Bojan Podgornik

doi:10.1016/j.jmrt.2022.10.089

Multiscale modification of aluminum alloys with deep cryogenic treatment for advanced properties

Matic Jovicevic-Klug, Levi Tegg, Patricia Jovicevic-Klug, Goran Dražic, László Almásy, Bryan Lim, Julie M. Cairney, Bojan Podgornik

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

13 Scopus citations

Abstract

Deep cryogenic treatment (DCT) has arisen as a promising green technology to modify the properties of metallic materials. Here we present a substantial (55%) improvement to the wear resistance of an Al-Mg-Si alloy using DCT without any deterioration of other mechanical properties. This improvement is attributed to a slight hardness increase resulting from multiscale microstructural modifications. DCT modifies the morphology of dispersoids as well as the organization and morphology of β'' precipitates that increase their fraction (25%) at the expense of β' precipitates. These effects are related to the greater nanoscale mobility and segregation of the alloying elements (Mg, Si) following DCT, resulting from lattice defect recombination. This research provides a fundamental breakthrough in understanding the DCT effect on aluminum alloys, confirming DCT as a feasible CO2-free treatment step towards improvement of aluminum alloys.

Original language	English
Pages (from-to)	3062-3073
Number of pages	12
Journal	Journal of Materials Research and Technology
Volume	21
DOIs	https://doi.org/10.1016/j.jmrt.2022.10.089
State	Published - Nov 2022
Externally published	Yes

Funding

This work was supported by Slovenian Research Agency ( ARRS ), Ljubljana, Slovenia [No. P2-0050]. Authors P.J-K., M.J-K. and B.P. would like to acknowledge Budapest Neutron Center, for providing beamtime at its neutrons scattering facilities and for financial support of project BRR¬-639. Authors L.T. and J.M.C. would like to acknowledge the Australian Research Council (ARC) [Future Fellowship FT180100232]. The contributions of author B.L. was sponsored by the Department of Industry, Innovation and Science under the auspices of the AUSMURI program.

Funders	Funder number
Budapest Neutron Center	BRR¬-639
Australian Research Council	FT180100232
Javna Agencija za Raziskovalno Dejavnost RS	P2-0050
Department of Industry, Innovation and Science, Australian Government

Keywords

Aluminum alloys
Atom probe tomography
Deep cryogenic treatment
Microstructure
Precipitation
Small-angle neutron scattering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jmrt.2022.10.089

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title = "Multiscale modification of aluminum alloys with deep cryogenic treatment for advanced properties",

abstract = "Deep cryogenic treatment (DCT) has arisen as a promising green technology to modify the properties of metallic materials. Here we present a substantial (55%) improvement to the wear resistance of an Al-Mg-Si alloy using DCT without any deterioration of other mechanical properties. This improvement is attributed to a slight hardness increase resulting from multiscale microstructural modifications. DCT modifies the morphology of dispersoids as well as the organization and morphology of β'' precipitates that increase their fraction (25%) at the expense of β' precipitates. These effects are related to the greater nanoscale mobility and segregation of the alloying elements (Mg, Si) following DCT, resulting from lattice defect recombination. This research provides a fundamental breakthrough in understanding the DCT effect on aluminum alloys, confirming DCT as a feasible CO2-free treatment step towards improvement of aluminum alloys.",

keywords = "Aluminum alloys, Atom probe tomography, Deep cryogenic treatment, Microstructure, Precipitation, Small-angle neutron scattering",

author = "Matic Jovicevic-Klug and Levi Tegg and Patricia Jovicevic-Klug and Goran Dra{\v z}ic and L{\'a}szl{\'o} Alm{\'a}sy and Bryan Lim and Cairney, {Julie M.} and Bojan Podgornik",

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AU - Jovicevic-Klug, Matic

AU - Tegg, Levi

AU - Jovicevic-Klug, Patricia

AU - Dražic, Goran

AU - Almásy, László

AU - Lim, Bryan

AU - Cairney, Julie M.

AU - Podgornik, Bojan

PY - 2022/11

Y1 - 2022/11

N2 - Deep cryogenic treatment (DCT) has arisen as a promising green technology to modify the properties of metallic materials. Here we present a substantial (55%) improvement to the wear resistance of an Al-Mg-Si alloy using DCT without any deterioration of other mechanical properties. This improvement is attributed to a slight hardness increase resulting from multiscale microstructural modifications. DCT modifies the morphology of dispersoids as well as the organization and morphology of β'' precipitates that increase their fraction (25%) at the expense of β' precipitates. These effects are related to the greater nanoscale mobility and segregation of the alloying elements (Mg, Si) following DCT, resulting from lattice defect recombination. This research provides a fundamental breakthrough in understanding the DCT effect on aluminum alloys, confirming DCT as a feasible CO2-free treatment step towards improvement of aluminum alloys.

AB - Deep cryogenic treatment (DCT) has arisen as a promising green technology to modify the properties of metallic materials. Here we present a substantial (55%) improvement to the wear resistance of an Al-Mg-Si alloy using DCT without any deterioration of other mechanical properties. This improvement is attributed to a slight hardness increase resulting from multiscale microstructural modifications. DCT modifies the morphology of dispersoids as well as the organization and morphology of β'' precipitates that increase their fraction (25%) at the expense of β' precipitates. These effects are related to the greater nanoscale mobility and segregation of the alloying elements (Mg, Si) following DCT, resulting from lattice defect recombination. This research provides a fundamental breakthrough in understanding the DCT effect on aluminum alloys, confirming DCT as a feasible CO2-free treatment step towards improvement of aluminum alloys.

KW - Aluminum alloys

KW - Atom probe tomography

KW - Deep cryogenic treatment

KW - Microstructure

KW - Precipitation

KW - Small-angle neutron scattering

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DO - 10.1016/j.jmrt.2022.10.089

M3 - Article

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SN - 2238-7854

VL - 21

SP - 3062

EP - 3073

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Multiscale modification of aluminum alloys with deep cryogenic treatment for advanced properties

Abstract

Funding

Keywords

UN SDGs

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