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首页> 外文期刊>Journal of Materials Engineering and Performance >Optimizing Diffusion Bonding Parameters in AA6061-T6 Aluminum and AZ80 Magnesium Alloy Dissimilar Joints
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Optimizing Diffusion Bonding Parameters in AA6061-T6 Aluminum and AZ80 Magnesium Alloy Dissimilar Joints

机译：优化AA6061-T6铝和AZ80镁合金异种接头的扩散结合参数

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摘要

The main difficulty when joining magnesium (Mg) and aluminum (Al) alloys by fusion welding lies in the formation of oxide films and brittle intermetallic in the bond region which affects the integrity of the joints. However, diffusion bonding is a suitable process to join these two materials as no such characteristic defects are produced at the joints. The diffusion bonding process parameters such as bonding temperature, bonding pressure, holding time, and surface roughness of the specimen play a major role in determining the joint strength. In this investigation, an attempt was made to develop empirical relationships to predict the strengths of diffusion bonded AZ80 magnesium and AA6061 aluminum alloys dissimilar joints from the process parameters based on central composite factorial design. Response surface methodology was applied to optimize the process parameters to attain the maximum shear strength and bonding strength of the joint. From this investigation, it was found that the bonds produced with the temperature of 405.87℃, pressure of 7.87 MPa, holding time of 29.02 min and surface roughness of 0.10 μm exhibited maximum shear strength and bonding strength of 57.70 and 76.90 MPa, respectively. The intermetallic formation at the interface was identified.
机译：通过熔融焊接连接镁（Mg）和铝（Al）合金的主要困难在于在结合区域形成氧化膜和脆性金属间化合物，这会影响接头的完整性。但是，扩散结合是连接这两种材料的合适方法，因为在接头处不会产生这种特征性缺陷。扩散键合工艺参数（例如键合温度，键合压力，保持时间和样品的表面粗糙度）在确定接头强度方面起着重要作用。在这项研究中，我们尝试建立经验关系，以基于中心复合因子设计的工艺参数来预测扩散结合的AZ80镁和AA6061铝合金异种接头的强度。应用响应面方法优化工艺参数，以获得最大的剪切强度和结合强度。从该研究中发现，在温度为405.87℃，压力为7.87 MPa，保持时间为29.02 min和表面粗糙度为0.10μm的情况下，所产生的粘结层分别表现出最大的剪切强度和粘结强度，分别为57.70和76.90 MPa。确定了界面处的金属间形成。

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