The fatigue properties of friction stir welds (FSW) in 2024-T4 and 2014-T6 Al-Cu alloys have been investigated.It was shown that the greater welding travel speed 250mm/min would be benefit to increase
The Friction Stir Welding (FSW) technology has the widely prosperous applications in joining light metals such as Aluminium alloy because of no fusion in its process and its insensitivity to the oxide
The surface corrosion behavior of an AA2024-T3 aluminium alloy sheet after friction stir welding was investigated by using an "in-situ observation" method.SEM observations showed that the density and
Based on the detailed analysis of the microstructure on top surface of friction stir welded (FSW) joint of 2024 aluminum alloy by optical microscope,XRD and transmission electron microscope.SEM was em
Friction stir welding of 7A60 aluminum plate of 6 mm thickness were completed in a single pass welding,the weld joints were observed and characterized with metallographic microscope OM,scanning electr
Copper strips (0.1mm thick) were used as markers to investigate the metal flow during friction stir welding.After welding,radiography and metalurgical sectioning were used to investigate the marker mo
为提高2024铝合金材料的抗腐蚀性能，在其表面通常包有一层高纯铝或含Zn1％(质量分数)的锌铝合金，包铝层在搅拌摩擦焊时会对接头的性能产生较大的影响。本研究采用搅拌摩擦焊技术对不同表面带有包铝层的2024-T3铝合金薄板进行了焊接，测试了其力学性能，并进行了金相组织观察。研究结果表明，包铝层的存在明显降低了2024-T3铝合金搅拌摩擦焊接头的力学性能；去掉包铝层后接头的性能显著提高；下表面包铝层对
研究了旋转速度以及旋转速度与焊接速度的匹配对6063铝合金搅拌摩擦焊接头形貌以及力学性能的影响。在高旋转速度、高焊接速度匹配条件下能够获得优质搅拌摩擦焊接头。
对14mm厚板铝合金搅拌摩擦焊(FSW)接头焊核区微观组织、整体和分层切片力学性能进行了研究.结果表明,当旋转速度为400r/min,焊接速度为60-100mm/min时,接头抗拉强度δb、屈服强度δα2和延伸率δ随焊速的升高而降低.焊缝分层切片的δb,δα2和δ上部最高,分别达到了186.7MPa,100.3MPa和14.1％；下部最低,分别为为157.5MPa,80.2MPa和10.1％.微观
采用搅拌摩擦焊，以三爪型搅拌头通过单、双道焊工艺，在相同的焊接参数下对包含或去除包铝层的2024-T3薄板铝合金进行搭接焊接。以包铝层为示踪材料，应用光学显微镜观察搭接接头宏观金相，研究了金属材料流动情况，观察原断裂位置，在上板前进侧发现了界面畸变。通过拉伸-剪切力测试，比较了接头性能。实验结果表明：采用双道焊(前进侧相对)工艺，可增大搭接界面宽度，减小或去除上板前进侧界面畸变的影响，提高搭接接头