TY - JOUR
T1 - Interfacial microstructure evolution and deformation mechanism in an explosively welded Al/Mg alloy plate
AU - Zhang, Tingting
AU - Wang, Wenxian
AU - Zhang, Wei
AU - Zhou, Jun
AU - Yan, Zhifeng
N1 - Funding Information:
The study was supported by National Natural Science Foundation of China (Grant 51805359 and 51375328) and China Postdoctoral Science Foundation (Grant 2018M631772).
Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/6/30
Y1 - 2019/6/30
N2 - Interface plays a crucial role in the mechanical properties of composite materials. In this study, the interfacial morphology, microstructure and deformation mechanism of an explosively welded AA6061/AZ31B composite plate were both experimentally and numerically investigated. SEM analysis showed that the bonding interface has a periodic wavy shape with melted (vortex) zones. The vortex formation was found directly related with the deformation of the base plate. The compound composition found in the vortex was caused by the jetting at the interface. Owing to the different crystal structures and thermal/physical properties of the AA6061 and AZ31B, deformed grains were dominant at the Al matrix side near the bonding interface, while the Mg matrix side contained mainly recrystallized grains. Mg17Al12 intermetallic compounds were found in the melted zones through EDS and EBSD analyses. TEM analysis showed that a 2.5-μm-thick transitional layer of Mg17Al12 phase was formed at the bonding interface. Nanoindentation test results showed the melted zone had a high nano-hardness, owning to the formation of a hard and brittle Al–Mg intermetallic compound there.
AB - Interface plays a crucial role in the mechanical properties of composite materials. In this study, the interfacial morphology, microstructure and deformation mechanism of an explosively welded AA6061/AZ31B composite plate were both experimentally and numerically investigated. SEM analysis showed that the bonding interface has a periodic wavy shape with melted (vortex) zones. The vortex formation was found directly related with the deformation of the base plate. The compound composition found in the vortex was caused by the jetting at the interface. Owing to the different crystal structures and thermal/physical properties of the AA6061 and AZ31B, deformed grains were dominant at the Al matrix side near the bonding interface, while the Mg matrix side contained mainly recrystallized grains. Mg17Al12 intermetallic compounds were found in the melted zones through EDS and EBSD analyses. TEM analysis showed that a 2.5-μm-thick transitional layer of Mg17Al12 phase was formed at the bonding interface. Nanoindentation test results showed the melted zone had a high nano-hardness, owning to the formation of a hard and brittle Al–Mg intermetallic compound there.
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U2 - 10.1007/s10853-019-03529-1
DO - 10.1007/s10853-019-03529-1
M3 - Article
AN - SCOPUS:85063473539
SN - 0022-2461
VL - 54
SP - 9155
EP - 9167
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 12
ER -