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首页> 外文会议>International Conference on Aluminum Alloys >Interfacial Reaction During Dissimilar Joining of Aluminum Alloy to Magnesium and Titanium Alloys
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Interfacial Reaction During Dissimilar Joining of Aluminum Alloy to Magnesium and Titanium Alloys

机译：铝合金与镁和钛合金异种接合过程中的界面反应

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Ultrasonic welding (USW), a solid state joining process, has been used to produce welds between AA6111 aluminum alloy and AZ31 magnesium alloys or titanium alloy Ti-6Al-4V. The mechanical properties of the welds have been assessed and it has been shown that it is the nature and thickness of the intermetallic compounds (IMCs) at the joint line that are critical in determining joint strength and particularly fracture energy. Al-Mg welds suffer from a very low fracture energy, even when strength is comparable with that of similar metal Mg-Mg welds, due to a thick IMC layer always being formed. It is demonstrated that in USW of Al-Ti alloy the slow interdiffusion kinetics means that an IMC layer does not form during welding, and fracture energy is greater. A model has been developed to predict IMC formation during welding and provide an understanding of the critical factors that determine the IMC thickness. It is predicted that in Al-Mg welds, most of the IMC thickening occurs whilst the IMC regions grow as separate islands, prior to the formation of a continuous layer.
机译：超声波焊接（USW），固态连接过程已用于在AA6111铝合金和AZ31镁合金或钛合金Ti-6Al-4V之间产生焊缝。已经评估了焊缝的机械性能，并且已经证明是在确定关节强度和特别是断裂能中的关节线处的金属间化合物（IMC）的性质和厚度。 Al-Mg焊缝患有非常低的裂缝能量，即使当强度与类似的金属Mg-Mg焊接相当，由于始终形成厚的IMC层。证明，在USW的Al-Ti合金中，缓慢的间隔动力学意味着在焊接期间不形成IMC层，并且裂缝能量更大。已经开发了一种模型来预测焊接期间的IMC形成，并对确定IMC厚度的关键因素提供了理解。预测，在Al-Mg焊接中，在形成连续层之前，在IMC区域生长为单独的岛中的大部分IMC增厚。

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