AbstractIn this study, feasibility of dissimilar friction-stir welding between an Al-Mg alloy (AA5052-'/> Dissimilar friction-stir lap-welding of aluminum-magnesium (AA5052) and aluminum-copper (AA2024) alloys: microstructural evolution and mechanical properties
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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Dissimilar friction-stir lap-welding of aluminum-magnesium (AA5052) and aluminum-copper (AA2024) alloys: microstructural evolution and mechanical properties
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Dissimilar friction-stir lap-welding of aluminum-magnesium (AA5052) and aluminum-copper (AA2024) alloys: microstructural evolution and mechanical properties

机译：铝 - 镁（AA5052）和铝 - 铜（AA2024）合金的不同摩擦搅拌焊接：微观结构演化和机械性能

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AbstractIn this study, feasibility of dissimilar friction-stir welding between an Al-Mg alloy (AA5052-O) and an Al-Cu alloy (AA2024-T4) in the lap joint design was assessed. After establishing a suitable working window in the moderate heat inputs in the term of rotational speed (w) and traverse velocity (v) to attain a defect-free sound dissimilar weld between these alloys, the microstructural characteristics and mechanical properties were evaluated. A hardness loss in the thermo-mechanical-affected zone and heat-affected zone at the AA2024 side was noticed due to over-ageing of precipitates. The most of processed dissimilar welds were failed along the stir zone. Depending on the welding defects, different fractographic aspects were observed. The processing parameters were optimized asw?=?1250?rpm andv?=?160 mm/min, which its weld failed from the weakest base metal (i.e., AA5052). A joint strength ratio of ~?99% (strength of~?200?MPa) and a completely ductile fracture behavior with large dimple-like features were noticed.]]>
机译： W ）和横向速度（<重点类型=“斜体”> V ）为了在这些合金之间获得无缺陷的声音不同的焊接，评估微观结构特性和机械性能。由于沉淀物过度老化，注意到AA2024侧的热机理受影响区和热影响区域的硬度损失。大多数加工的不同焊缝沿搅拌区失效。根据焊接缺陷，观察到不同的土壤方面。处理参数被优化为<重点类型=“斜体”> w ？=？1250？rpm和<重点类型=“斜体”> v ？=？160 mm / min，它的焊接从最弱的基础金属（即AA5052）失败。注意到〜99％的关节强度比（〜？200？mpa的强度）和具有大的凹坑状特征的完全延展性裂缝行为。 ]]>

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