Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions

M. M. Sharma; M. F. Amateau; T. J. Eden

doi:10.1016/j.jallcom.2005.08.045

Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions

M. M. Sharma, M. F. Amateau, T. J. Eden

Applied Research Laboratory (ARL)

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

60 Scopus citations

Abstract

The hardening mechanisms in spray formed Al-Zn-Mg-Cu alloys with additions of chromium, zinc and scandium were studied. The microstructure of the spray formed alloys was analyzed by transmission electron microscopy. A range of tensile strengths were achieved, and varied based on elemental additions, and second phase particle strengthening. To explain the significantly higher strength in one alloy with scandium, theoretical results due to the yield stress of Al-Zn-Mg-Cu alloys as a function of volume fraction and precipitate particle size, were compared to experimental data. Both the possibilities of coherency and order strengthening are examined. The significant additional hardening achieved in the alloy with scandium is attributed to small ordered particles of Al₃Sc, which precipitated during aging.

Original language	English (US)
Pages (from-to)	135-142
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	416
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2005.08.045
State	Published - Jun 8 2006

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2005.08.045

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title = "Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions",

abstract = "The hardening mechanisms in spray formed Al-Zn-Mg-Cu alloys with additions of chromium, zinc and scandium were studied. The microstructure of the spray formed alloys was analyzed by transmission electron microscopy. A range of tensile strengths were achieved, and varied based on elemental additions, and second phase particle strengthening. To explain the significantly higher strength in one alloy with scandium, theoretical results due to the yield stress of Al-Zn-Mg-Cu alloys as a function of volume fraction and precipitate particle size, were compared to experimental data. Both the possibilities of coherency and order strengthening are examined. The significant additional hardening achieved in the alloy with scandium is attributed to small ordered particles of Al3Sc, which precipitated during aging.",

author = "Sharma, {M. M.} and Amateau, {M. F.} and Eden, {T. J.}",

note = "Funding Information: The authors would like to thank Naval Sea Systems Command for the financial support of this research under Contract No. N00039-97-D-0042, Delivery Order Nos. 0214 and 0215. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.jallcom.2005.08.045",

language = "English (US)",

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AU - Sharma, M. M.

AU - Amateau, M. F.

AU - Eden, T. J.

N1 - Funding Information: The authors would like to thank Naval Sea Systems Command for the financial support of this research under Contract No. N00039-97-D-0042, Delivery Order Nos. 0214 and 0215. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2006/6/8

Y1 - 2006/6/8

N2 - The hardening mechanisms in spray formed Al-Zn-Mg-Cu alloys with additions of chromium, zinc and scandium were studied. The microstructure of the spray formed alloys was analyzed by transmission electron microscopy. A range of tensile strengths were achieved, and varied based on elemental additions, and second phase particle strengthening. To explain the significantly higher strength in one alloy with scandium, theoretical results due to the yield stress of Al-Zn-Mg-Cu alloys as a function of volume fraction and precipitate particle size, were compared to experimental data. Both the possibilities of coherency and order strengthening are examined. The significant additional hardening achieved in the alloy with scandium is attributed to small ordered particles of Al3Sc, which precipitated during aging.

AB - The hardening mechanisms in spray formed Al-Zn-Mg-Cu alloys with additions of chromium, zinc and scandium were studied. The microstructure of the spray formed alloys was analyzed by transmission electron microscopy. A range of tensile strengths were achieved, and varied based on elemental additions, and second phase particle strengthening. To explain the significantly higher strength in one alloy with scandium, theoretical results due to the yield stress of Al-Zn-Mg-Cu alloys as a function of volume fraction and precipitate particle size, were compared to experimental data. Both the possibilities of coherency and order strengthening are examined. The significant additional hardening achieved in the alloy with scandium is attributed to small ordered particles of Al3Sc, which precipitated during aging.

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Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions

Abstract

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