Interfacial microstructure evolution and deformation mechanism in an explosively welded Al/Mg alloy plate
Interfacial microstructure evolution and deformation mechanism in an explosively welded Al/Mg alloy plate
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爆炸焊接Al/Mg合金板界面显微组织演化及变形机制
DOI：
10.1007/s10853-019-03529-1
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发表时间：
2019-03
影响因子：
4.5
通讯作者：
Yan Zhifeng
中科院分区：
文献类型：
--
作者：
Zhang Tingting;Wang Wenxian;Zhang Wei;Zhou Jun;Yan Zhifeng
界面对复合材料的力学性能起着至关重要的作用。本文对AA 6061/AZ 31 B复合材料爆炸焊接接头的界面形貌、微观组织和变形机理进行了实验和数值模拟研究。SEM分析表明，结合界面呈周期性的波浪状，并伴有熔融（涡流）区。涡流的形成与基板的变形直接相关。在旋涡中发现的化合物成分是由界面处的喷射引起的。由于AA 6061和AZ 31 B的晶体结构和热/物理性能不同，变形晶粒在靠近结合界面的Al基体侧占主导地位，而Mg基体侧主要包含再结晶晶粒。通过EDS和EBSD分析，在熔化区发现了Mg 17 Al 12金属间化合物。TEM分析表明，在结合界面处形成了2.5 μ m厚的Mg 17 Al 12相过渡层。纳米压痕测试结果表明，熔化区具有较高的纳米硬度，这是由于在熔化区形成了硬脆的Al-Mg金属间化合物。
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. Mg17Al12intermetallic compounds were found in the melted zones through EDS and EBSD analyses. TEM analysis showed that a 2.5-μm-thick transitional layer of Mg17Al12phase 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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影响因子：
5.3
作者：
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通讯作者：
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影响因子：
8.4
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作者：
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DOI：
10.1016/j.msea.2016.01.080
发表时间：
2016-03-21
影响因子：
6.4
作者：
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影响因子：
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作者：
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