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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Temperature, Force, and Vibration on Fatigue Strength of Friction Stir-Welded AA7075 Aluminum Alloy Joints
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Effect of Temperature, Force, and Vibration on Fatigue Strength of Friction Stir-Welded AA7075 Aluminum Alloy Joints

机译：温度，力和振动对摩擦搅拌焊接AA7075铝合金接头疲劳强度的影响

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摘要

In this study, the AA7075 alloy pairs were welded by friction stir welding method by using conical- and triangular-type stirrer pins. Welding forces and moments, vibration, and temperature values have been measured during the jointing depending on the welding parameters. Finally, microstructures were examined and mechanical tests were carried out. Results obtained from the experiments revealed that at low spindle speed and welding feed rates, the temperatures formed on the surface of the alloy pair were high, the vibrations were low, and the welding force and moments were partially high. When the microstructures of the welded areas are examined, it was determined that the conical mixing pin has a better microstructure than the triangular mixing pin. In addition, it was determined that the mechanical properties of welded joints having a good microstructure were quite good. As a result, it was observed that forces during welding, temperature of welding, and vibration values have an effect on microstructure and mechanical properties.
机译：在本研究中，AA7075合金对采用搅拌摩擦焊方法，使用锥形和三角形搅拌销进行焊接。焊接过程中，根据焊接参数测量了焊接力和力矩、振动和温度值。最后，检查了显微结构并进行了力学试验。实验结果表明，在较低的主轴转速和焊接进给速度下，合金副表面形成的温度较高，振动较低，焊接力和力矩部分较高。当检查焊接区域的微观结构时，确定锥形混合销比三角形混合销具有更好的微观结构。此外，确定具有良好微观结构的焊接接头的机械性能相当好。结果发现，焊接过程中的力、焊接温度和振动值对微观结构和机械性能有影响。

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