Optimizing Size and Number Density of Al3Zr Dispersoids in Al–Zn–Mg–Cu Alloys

Mohammad Taha Honaramooz; Roland Morak; Oskar Paris

doi:10.1002/adem.202400353

Optimizing Size and Number Density of Al₃Zr Dispersoids in Al–Zn–Mg–Cu Alloys

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Optimizing Size and Number Density of Al₃Zr Dispersoids in Al–Zn–Mg–Cu Alloys. / Honaramooz, Mohammad Taha; Morak, Roland; Paris, Oskar.
In: Advanced Engineering Materials, Vol. 26.2024, No. 19, 2400353, 16.03.2024.

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

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@article{6f26e8090a1641bc83de06814b05ab7c,

title = "Optimizing Size and Number Density of Al3Zr Dispersoids in Al–Zn–Mg–Cu Alloys",

abstract = "The formation and temporal evolution of Al3Zr dispersoids in an Al–Zn–Mg–Cu alloy is investigated by in situ small-angle X-ray scattering during different homogenization treatments. The aim is to determine the most effective homogenization parameters for obtaining a high number density and small size of the dispersoids. Nucleation of the dispersoids is found to start above 400 °C and is boosted after isothermal holding at 425 °C. Regardless of the detailed homogenization profile, coarsening of the dispersoids is not observed below 450 °C. The results demonstrate that decreasing the heating rate, prolonging the first isothermal step, or increasing the number of steps are all beneficial regarding an increase of both, the volume fraction, and the number density of the dispersoids. Among the four investigated homogenization profiles, the one with decreasing the heating rate shows the highest impact.",

keywords = "aluminum alloys, homogenizations, in situ small-angle X-ray scattering, phase transformation kinetics",

author = "Honaramooz, {Mohammad Taha} and Roland Morak and Oskar Paris",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH.",

year = "2024",

month = mar,

day = "16",

doi = "10.1002/adem.202400353",

language = "English",

volume = "26.2024",

journal = "Advanced Engineering Materials",

issn = "1438-1656",

publisher = "Wiley-VCH ",

number = "19",

}

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TY - JOUR

T1 - Optimizing Size and Number Density of Al3Zr Dispersoids in Al–Zn–Mg–Cu Alloys

AU - Honaramooz, Mohammad Taha

AU - Morak, Roland

AU - Paris, Oskar

PY - 2024/3/16

Y1 - 2024/3/16

N2 - The formation and temporal evolution of Al3Zr dispersoids in an Al–Zn–Mg–Cu alloy is investigated by in situ small-angle X-ray scattering during different homogenization treatments. The aim is to determine the most effective homogenization parameters for obtaining a high number density and small size of the dispersoids. Nucleation of the dispersoids is found to start above 400 °C and is boosted after isothermal holding at 425 °C. Regardless of the detailed homogenization profile, coarsening of the dispersoids is not observed below 450 °C. The results demonstrate that decreasing the heating rate, prolonging the first isothermal step, or increasing the number of steps are all beneficial regarding an increase of both, the volume fraction, and the number density of the dispersoids. Among the four investigated homogenization profiles, the one with decreasing the heating rate shows the highest impact.

AB - The formation and temporal evolution of Al3Zr dispersoids in an Al–Zn–Mg–Cu alloy is investigated by in situ small-angle X-ray scattering during different homogenization treatments. The aim is to determine the most effective homogenization parameters for obtaining a high number density and small size of the dispersoids. Nucleation of the dispersoids is found to start above 400 °C and is boosted after isothermal holding at 425 °C. Regardless of the detailed homogenization profile, coarsening of the dispersoids is not observed below 450 °C. The results demonstrate that decreasing the heating rate, prolonging the first isothermal step, or increasing the number of steps are all beneficial regarding an increase of both, the volume fraction, and the number density of the dispersoids. Among the four investigated homogenization profiles, the one with decreasing the heating rate shows the highest impact.

KW - aluminum alloys

KW - homogenizations

KW - in situ small-angle X-ray scattering

KW - phase transformation kinetics

UR - http://www.scopus.com/inward/record.url?scp=85188568569&partnerID=8YFLogxK

U2 - 10.1002/adem.202400353

DO - 10.1002/adem.202400353

M3 - Article

AN - SCOPUS:85188568569

VL - 26.2024

JO - Advanced Engineering Materials

JF - Advanced Engineering Materials

SN - 1438-1656

IS - 19

M1 - 2400353

ER -

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Optimizing Size and Number Density of Al₃Zr Dispersoids in Al–Zn–Mg–Cu Alloys

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