Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties

Shipeng Shu; Anthony De Luca; David N. Seidman; David C. Dunand

doi:10.1007/978-3-030-36408-3_45

Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties

Shipeng Shu^*, Anthony De Luca, David N. Seidman, David C. Dunand

^*Corresponding author for this work

Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

Dilute Al–Zr–Sc–Er–Si alloys strengthened by coherent L1₂ Al₃(Sc, Er, Zr) nanoprecipitates have potential applications at temperatures higher than 400 °C. In this research, the effects of micro-additions of 0.25 at.% Mn and/or 0.10 at.% Mo to a dilute Al-0.08Zr-0.014Sc-0.008Er-0.09Si (at.%) alloy were investigated using atom-probe tomography, as well as mechanical testing after different heat treatments. Molybdenum and manganese result in solid-solution strengthening. Aging at 400 °C leads to the formation of core-shell (L1₂ structure) nanoprecipitates, with Mn partitioning to the core, and Mo partitioning to both the core and nanoprecipitate/matrix interface. Manganese-modified L1₂ nanoprecipitates exhibit a higher number density, while Molybdenum-modified L1₂ nanoprecipitates display an improved coarsening resistance.

Original language	English (US)
Title of host publication	Light Metals 2020
Editors	Alan Tomsett
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	312-317
Number of pages	6
ISBN (Print)	9783030364076
DOIs	https://doi.org/10.1007/978-3-030-36408-3_45
State	Published - 2020
Event	Light Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States Duration: Feb 23 2020 → Feb 27 2020

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	Light Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020
Country/Territory	United States
City	San Diego
Period	2/23/20 → 2/27/20

Funding

Acknowledgements This research was sponsored by the Ford-Northwestern University Alliance. Atom-probe tomography was performed at the Northwestern University Center for Atom-Probe Tomography (NUCAPT). The LEAP tomograph in NUCAPT was purchased and upgraded with funding from NSF-MRI (DMR-0420532) and ONR DURIP (N00014e0400798, N00014e0610539, N00014-0910781, N00014-1712870) programs. Instrumentation at NUCAPT was partially supported by the Initiative for Sustainability and Energy at Northwestern University (ISEN). This work made use of the MatCI Facility and the EPIC facility (NUANCE Center) at Northwestern University. NUCAPT, MatCI and NUANCE received support from the MRSEC program (NSF DMR-1720139) through Northwestern’s Materials Research Center; NUCAPT and NUANCE also benefitted from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF NNCI-1542205). NUANCE received support from the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN. DNS and DCD disclose financial interests in Braidy Industries, which is active in the area of aluminum alloys. This research was sponsored by the Ford-Northwestern University Alliance. Atom-probe tomography was performed at the Northwestern University Center for Atom-Probe Tomography (NUCAPT). The LEAP tomograph in NUCAPT was purchased and upgraded with funding from NSF-MRI (DMR-0420532) and ONR DURIP (N00014e0400798, N00014e0610539, N00014-0910781, N00014-1712870) programs. Instrumentation at NUCAPT was partially supported by the Initiative for Sustainability and Energy at Northwestern University (ISEN). This work made use of the MatCI Facility and the EPIC facility (NUANCE Center) at Northwestern University. NUCAPT, MatCI and NUANCE received support from the MRSEC program (NSFDMR-1720139) through Northwestern?s Materials Research Center; NUCAPT and NUANCE also benefitted from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSFNNCI-1542205). NUANCE received support from the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN. DNS and DCD disclose financial interests in Braidy Industries, which is active in the area of aluminum alloys.

Keywords

Aluminum alloys
Atom-probe tomography
Precipitation strengthening

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-030-36408-3_45

Cite this

@inproceedings{cacaae13e3a04d07ba0a54b8b45f6285,

title = "Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties",

abstract = "Dilute Al–Zr–Sc–Er–Si alloys strengthened by coherent L12 Al3(Sc, Er, Zr) nanoprecipitates have potential applications at temperatures higher than 400 °C. In this research, the effects of micro-additions of 0.25 at.% Mn and/or 0.10 at.% Mo to a dilute Al-0.08Zr-0.014Sc-0.008Er-0.09Si (at.%) alloy were investigated using atom-probe tomography, as well as mechanical testing after different heat treatments. Molybdenum and manganese result in solid-solution strengthening. Aging at 400 °C leads to the formation of core-shell (L12 structure) nanoprecipitates, with Mn partitioning to the core, and Mo partitioning to both the core and nanoprecipitate/matrix interface. Manganese-modified L12 nanoprecipitates exhibit a higher number density, while Molybdenum-modified L12 nanoprecipitates display an improved coarsening resistance.",

keywords = "Aluminum alloys, Atom-probe tomography, Precipitation strengthening",

author = "Shipeng Shu and {De Luca}, Anthony and Seidman, {David N.} and Dunand, {David C.}",

note = "Publisher Copyright: {\textcopyright} 2020, The Minerals, Metals & Materials Society.; Light Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020 ; Conference date: 23-02-2020 Through 27-02-2020",

year = "2020",

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language = "English (US)",

isbn = "9783030364076",

series = "Minerals, Metals and Materials Series",

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}

Shu, S, De Luca, A, Seidman, DN & Dunand, DC 2020, Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties. in A Tomsett (ed.), Light Metals 2020. Minerals, Metals and Materials Series, Springer Science and Business Media Deutschland GmbH, pp. 312-317, Light Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020, San Diego, United States, 2/23/20. https://doi.org/10.1007/978-3-030-36408-3_45

Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties. / Shu, Shipeng; De Luca, Anthony; Seidman, David N. et al.
Light Metals 2020. ed. / Alan Tomsett. Springer Science and Business Media Deutschland GmbH, 2020. p. 312-317 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties

AU - Shu, Shipeng

AU - De Luca, Anthony

AU - Seidman, David N.

AU - Dunand, David C.

PY - 2020

Y1 - 2020

N2 - Dilute Al–Zr–Sc–Er–Si alloys strengthened by coherent L12 Al3(Sc, Er, Zr) nanoprecipitates have potential applications at temperatures higher than 400 °C. In this research, the effects of micro-additions of 0.25 at.% Mn and/or 0.10 at.% Mo to a dilute Al-0.08Zr-0.014Sc-0.008Er-0.09Si (at.%) alloy were investigated using atom-probe tomography, as well as mechanical testing after different heat treatments. Molybdenum and manganese result in solid-solution strengthening. Aging at 400 °C leads to the formation of core-shell (L12 structure) nanoprecipitates, with Mn partitioning to the core, and Mo partitioning to both the core and nanoprecipitate/matrix interface. Manganese-modified L12 nanoprecipitates exhibit a higher number density, while Molybdenum-modified L12 nanoprecipitates display an improved coarsening resistance.

AB - Dilute Al–Zr–Sc–Er–Si alloys strengthened by coherent L12 Al3(Sc, Er, Zr) nanoprecipitates have potential applications at temperatures higher than 400 °C. In this research, the effects of micro-additions of 0.25 at.% Mn and/or 0.10 at.% Mo to a dilute Al-0.08Zr-0.014Sc-0.008Er-0.09Si (at.%) alloy were investigated using atom-probe tomography, as well as mechanical testing after different heat treatments. Molybdenum and manganese result in solid-solution strengthening. Aging at 400 °C leads to the formation of core-shell (L12 structure) nanoprecipitates, with Mn partitioning to the core, and Mo partitioning to both the core and nanoprecipitate/matrix interface. Manganese-modified L12 nanoprecipitates exhibit a higher number density, while Molybdenum-modified L12 nanoprecipitates display an improved coarsening resistance.

KW - Aluminum alloys

KW - Atom-probe tomography

KW - Precipitation strengthening

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Y2 - 23 February 2020 through 27 February 2020

ER -

Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties

Abstract

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Funding

Keywords

ASJC Scopus subject areas

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