Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al–Mn–Mo–Si–Zr–Sc–Er alloy

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

doi:10.1016/j.msea.2020.140550

Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al–Mn–Mo–Si–Zr–Sc–Er alloy

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

^*Corresponding author for this work

Materials Science and Engineering

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

6 Scopus citations

Abstract

A micro-addition (0.025 at.%) of slow-diffusing W to an Al-0.26Mn-0.11Mo-0.11Si-0.08Zr-0.02Sc-0.01Er (at.%) alloy accelerates L1₂-Al₃(Zr,Sc) precipitation but retards α-Al(Mn,Mo)Si precipitation. The W micro-addition increases the peak-microhardness of the alloy during isothermal aging but does not improve the coarsening resistance and creep resistance.

Original language	English (US)
Article number	140550
Journal	Materials Science and Engineering: A
Volume	803
DOIs	https://doi.org/10.1016/j.msea.2020.140550
State	Published - Jan 28 2021

Funding

This research was sponsored by the Ford-Northwestern University Alliance. The authors thank Drs. J.M. Boileau and B. Ghaffari (Ford Motor Company) for numerous useful discussions. DNS and DCD also acknowledge partial support (for the redaction of the manuscript) from the Office of Naval Research , under grant N00014-16-1-2402 . 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. This research was sponsored by the Ford-Northwestern University Alliance. The authors thank Drs. J.M. Boileau and B. Ghaffari (Ford Motor Company) for numerous useful discussions. DNS and DCD also acknowledge partial support (for the redaction of the manuscript) from the Office of Naval Research, under grant N00014-16-1-2402. 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.

Keywords

Aluminum alloys
Atom-probe tomography
Elevated-temperature
Precipitation kinetics

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al–Mn–Mo–Si–Zr–Sc–Er alloy",

abstract = "A micro-addition (0.025 at.%) of slow-diffusing W to an Al-0.26Mn-0.11Mo-0.11Si-0.08Zr-0.02Sc-0.01Er (at.%) alloy accelerates L12-Al3(Zr,Sc) precipitation but retards α-Al(Mn,Mo)Si precipitation. The W micro-addition increases the peak-microhardness of the alloy during isothermal aging but does not improve the coarsening resistance and creep resistance.",

keywords = "Aluminum alloys, Atom-probe tomography, Elevated-temperature, Precipitation kinetics",

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

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

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day = "28",

doi = "10.1016/j.msea.2020.140550",

language = "English (US)",

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journal = "Materials Science and Engineering: A",

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T1 - Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al–Mn–Mo–Si–Zr–Sc–Er alloy

AU - Shu, Shipeng

AU - De Luca, Anthony

AU - Dunand, David C.

AU - Seidman, David N.

PY - 2021/1/28

Y1 - 2021/1/28

N2 - A micro-addition (0.025 at.%) of slow-diffusing W to an Al-0.26Mn-0.11Mo-0.11Si-0.08Zr-0.02Sc-0.01Er (at.%) alloy accelerates L12-Al3(Zr,Sc) precipitation but retards α-Al(Mn,Mo)Si precipitation. The W micro-addition increases the peak-microhardness of the alloy during isothermal aging but does not improve the coarsening resistance and creep resistance.

AB - A micro-addition (0.025 at.%) of slow-diffusing W to an Al-0.26Mn-0.11Mo-0.11Si-0.08Zr-0.02Sc-0.01Er (at.%) alloy accelerates L12-Al3(Zr,Sc) precipitation but retards α-Al(Mn,Mo)Si precipitation. The W micro-addition increases the peak-microhardness of the alloy during isothermal aging but does not improve the coarsening resistance and creep resistance.

KW - Aluminum alloys

KW - Atom-probe tomography

KW - Elevated-temperature

KW - Precipitation kinetics

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JO - Materials Science and Engineering: A

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M1 - 140550

ER -

Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al–Mn–Mo–Si–Zr–Sc–Er alloy

Abstract

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Keywords

ASJC Scopus subject areas

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