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首页> 外文期刊>Проблемы прочностиПроблемы прочности: на рус．укр．и анг．языках >Fatigue Behavior of Dissimilar Friction Stir Welds between Cast and Wrought Aluminum Alloys
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Fatigue Behavior of Dissimilar Friction Stir Welds between Cast and Wrought Aluminum Alloys

机译：不同的搅拌摩擦焊缝的疲劳行为铸造和锻造铝合金之间

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摘要

Cast aluminum alloy, AC4CH-T6, and wrought aluminum alloy, A6061-T6, were joined by means of friction stir welding (FSW) technique. The effect of microstructure and post heat treatment on fatigue behavior of the dissimilar joints was investigated. Near the weld centre, Vickers hardness was lower than in the parent metals and the hardness minima were observed along the trace route of FSW tool's shoulder edge. Tensile fracture took place on A6061 side where the hardness was minimal, resulting in the lower static strength of the dissimilar joints than AC4CH or A6061. Fatigue fracture occurred on AC4CH side due to casting defects and the fatigue strength of the dissimilar joints was similar to that of AC4CH, but lower than that of A6061. Friction stir process (FSP) and post heat treatment successfully improved the fatigue strength of the dissimilar joints up to that of the parent metal, A6061.
机译：铸造铝合金,AC4CH-T6,造成铝合金,A6061-T6加入的搅拌摩擦焊(FSW)技术。微观结构和热处理后不同的接头的疲劳行为调查。比在父金属和硬度较低硬度最小值跟踪观察路线的肩膀边焊工具。断裂发生在A6061边的地方硬度最小,导致较低的不同的关节的静态强度比AC4CH或A6061。AC4CH侧由于铸造缺陷和疲劳的强度不同的关节相似AC4CH,但低于A6061。搅拌摩擦过程(FSP)和post热量治疗成功地提高了疲劳的强度不同的关节母材,A6061。

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