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首页> 外文期刊>Journal of Materials Engineering and Performance >Comparison between Explosive Welding and Roll-Bonding Processes of AA1050/Mg AZ31B Bilayer Composite Sheets Considering Microstructure and Mechanical Properties
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Comparison between Explosive Welding and Roll-Bonding Processes of AA1050/Mg AZ31B Bilayer Composite Sheets Considering Microstructure and Mechanical Properties

机译：考虑微观结构和机械性能的AA1050 / Mg AZ31B双层复合板爆炸焊接和轧辊粘接工艺的比较

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In this article, the effect of the manufacturing process on the microstructure and mechanical properties of AA1050/Mg-AZ31B bilayer composite sheets has been studied experimentally. In multilayer composite sheets, the interface bond strength plays a significant role in the mechanical properties of the composite. The most important factor affecting the bond strength is the manufacturing process of these sheets. So, two processes of explosive welding and roll bonding have been used to manufacture the bilayer composite sheets. The results show that the atomic diffusion in the interface is 6.5 microns in the explosive welding and 6.7 microns in the roll bonding. No intermetallic compounds have been observed in the interface of the studied bonding methods. The wavy and straight interface morphologies have been observed for explosive welding and roll bonding, respectively. Also, recrystallization has been observed in the microstructure of both methods. In the magnesium microstructure of rolled sample, twinning and deformation bands have been seen, while adiabatic shear bands have been formed in the explosive-welded sample. The ultimate tensile strength, elongation, and work of fracture (WOF) of explosive-welded sheets have been increased by 145%, 31%, and 407% relative to the rolled sheets, respectively. Besides, considering the separation of layers in the tensile test of rolled sheets compared to explosive welded ones, it can be stated that the structural failure in explosive welding occurs simultaneously for all layers. However, for roll bonding, the layer failure is independent of the entire structure failure. In this case, first, necking and fracture of the magnesium layer occur, and then, after the separation of the interface, the fracture of the aluminum layer happens.
机译：本文通过实验研究了制备工艺对AA1050/Mg-AZ31B双层复合板微观结构和力学性能的影响。在多层复合材料板中，界面粘结强度对复合材料的力学性能起着重要作用。影响粘结强度的最重要因素是这些板材的制造工艺。因此，我们采用了爆炸焊接和滚焊两种工艺来制造双层复合材料板。结果表明，爆炸焊接时界面原子扩散为6.5微米，滚焊时界面原子扩散为6.7微米。在所研究的键合方法的界面中未观察到金属间化合物。爆炸焊接和滚压焊分别观察到了波浪形和直形界面形态。此外，在两种方法的微观结构中都观察到了再结晶。在轧制试样的镁组织中，出现了孪晶和变形带，而爆炸焊接试样中形成了绝热剪切带。爆炸焊接板材的极限抗拉强度、伸长率和断裂功（WOF）分别比轧制板材提高了145%、31%和407%。此外，考虑到与爆炸焊接板材相比，轧制板材拉伸试验中的分层，可以说，爆炸焊接中的结构失效同时发生在所有层上。然而，对于滚焊，层失效与整个结构失效无关。在这种情况下，首先，镁层发生颈缩和断裂，然后，在界面分离后，铝层发生断裂。

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