C103 is a niobium based refractory alloy commonly used in the aerospace industry. To protect the metal from high-temperature oxidizing environments, C103 is often coated with an environmental barrier coating. A common coating for this material is known as R512E, a disilicide slurry applied and cured with heat. This paper aims to determine the effects on mechanical properties of common post processing techniques used on C103 produced via laser powder bed fusion. Tensile specimens were produced in both horizontal and vertical orientations, post processed via hot isostatic pressing, coated, and further heat treatment to simulate a typical operating environment for the coated material. Tensile tests were then conducted at room temperature and compared to ASTM B654 standards for wrought C103. Strength decreased after HIP and coating but remained unchanged after further heat treat. Grain growth was evident after HIP and coat applications which is in direct correlation with decreasing strength and increasing ductility.

中文翻译：

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使用激光粉末床熔融 （L-PBF） 制造的 R512E 涂层 Nb[sbnd]C103 的拉伸性能


C103 是一种铌基耐火合金，常用于航空航天工业。为了保护金属免受高温氧化环境的影响，C103 通常涂有环境阻隔涂层。这种材料的常见涂层称为 R512E，这是一种涂覆并加热固化的二硅化物浆料。本文旨在确定通过激光粉末床熔融生产的 C103 上使用的常见后处理技术对机械性能的影响。拉伸试样在水平和垂直方向上生产，通过热等静压、涂层和进一步热处理进行后处理，以模拟涂层材料的典型操作环境。然后在室温下进行拉伸试验，并与锻造 C103 的 ASTM B654 标准进行比较。HIP 和涂层后强度下降，但在进一步热处理后保持不变。在热等层静压和涂层应用后，晶粒生长明显，这与强度降低和延展性增加直接相关。