Characterization of Zr-Containing Dispersoids in Al–Zn–Mg–Cu Alloys by Small-Angle Scattering
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In: Materials, Vol. 16.2023, No. 3, 1213, 31.01.2023.
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TY - JOUR
T1 - Characterization of Zr-Containing Dispersoids in Al–Zn–Mg–Cu Alloys by Small-Angle Scattering
AU - Honaramooz, Mohammadtaha
AU - Morak, Roland
AU - Pogatscher, Stefan
AU - Popovski, Gerhard
AU - Kremmer, Thomas
AU - Meisel, Thomas
AU - Österreicher, Johannes A
AU - Arnoldt, Aurel
AU - Paris, Oskar
N1 - Publisher Copyright: © 2023 by the authors.
PY - 2023/1/31
Y1 - 2023/1/31
N2 - The characterization of Zr-containing dispersoids in aluminum alloys is challenging due to their broad size distribution, low volume fraction, and heterogeneous distribution within the grains. In this work, small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) were compared to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) regarding their capability to characterize Zr-containing dispersoids in aluminum alloys. It was demonstrated that both scattering techniques are suitable tools to characterize dispersoids in a multi-phase industrial 7xxx series aluminum alloy. While SAXS is more sensitive than SANS due to the high electron density of Zr-containing dispersoids, SANS has the advantage of being able to probe a much larger sample volume. The combination of both scattering techniques allows for the verification that the contribution from dispersoids can be separated from that of other precipitate phases such as the S-phase or GP-zones. The size distributions obtained from SAXS, SANS and TEM showed good agreement. The SEM-derived size distributions were, however, found to significantly deviate from those of the other techniques, which can be explained by considering the resolution-limited restrictions of the different techniques.
AB - The characterization of Zr-containing dispersoids in aluminum alloys is challenging due to their broad size distribution, low volume fraction, and heterogeneous distribution within the grains. In this work, small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) were compared to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) regarding their capability to characterize Zr-containing dispersoids in aluminum alloys. It was demonstrated that both scattering techniques are suitable tools to characterize dispersoids in a multi-phase industrial 7xxx series aluminum alloy. While SAXS is more sensitive than SANS due to the high electron density of Zr-containing dispersoids, SANS has the advantage of being able to probe a much larger sample volume. The combination of both scattering techniques allows for the verification that the contribution from dispersoids can be separated from that of other precipitate phases such as the S-phase or GP-zones. The size distributions obtained from SAXS, SANS and TEM showed good agreement. The SEM-derived size distributions were, however, found to significantly deviate from those of the other techniques, which can be explained by considering the resolution-limited restrictions of the different techniques.
KW - Al–Zn–Mg–Cu
KW - SANS
KW - SAXS
KW - size distribution
KW - Zr-containing dispersoid
UR - http://www.scopus.com/inward/record.url?scp=85147842804&partnerID=8YFLogxK
U2 - 10.3390/ma16031213
DO - 10.3390/ma16031213
M3 - Article
AN - SCOPUS:85147842804
VL - 16.2023
JO - Materials
JF - Materials
SN - 1996-1944
IS - 3
M1 - 1213
ER -
