Abstract This work characterizes aluminum alloy (AA) 2219 created by use of the solid-state additive friction stir-deposition (AFS-D) process. Specifically, it determines the “goodness” for use in particular circumstances of as-deposited material created by varied process parameter sets as a function of microhardness and grain size measurements. It presents ideal process parameters for AFS-D AA2219 and characterizes the local optimal as-deposited material by cyclic plastic response, monotonic tensile response, microhardness, grain size, and precipitate existence. Ultimately, this work provides the foundation for the AFS-D technology to be used in construction of NASA’s Space Launch System (SLS) vehicle.

中文翻译：

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添加剂搅拌摩擦沉积的疲劳行为表征 AA2219

摘要 这项工作表征了使用固态添加剂搅拌摩擦沉积 (AFS-D) 工艺制造的铝合金 (AA) 2219。具体来说，它根据显微硬度和晶粒尺寸测量值确定由不同工艺参数集产生的沉积材料在特定情况下使用的“质量”。它为 AFS-D AA2219 提供了理想的工艺参数，并通过循环塑性响应、单调拉伸响应、显微硬度、晶粒尺寸和沉淀物的存在来表征局部最优的沉积态材料。最终，这项工作为 AFS-D 技术用于建造 NASA 的太空发射系统 (SLS) 飞行器奠定了基础。