Preparation and mechanical properties of NiCoCrAlY/NiCr laminates by electron beam physical vapor deposition
来源期刊：中国有色金属学报(英文版)2005年第z3期
论文作者：韩杰才 李垚 赫晓东 孟松鹤 曾岗 陈宏平
文章页码：53 - 56
Key words：NiCoCrAlY/NiCr laminate； electron beam physical vapor deposition (EB-PVD)； tensile test； substrate temperature
Abstract: Laminates with alternating layers of NiCoCrAlY and NiCr were fabricated by using electron beam physical vapor deposition (EB-PVD) method. The influence of the substrate temperature on morphology of the laminates was investigated. The results show that in order to produce NiCoCrAlY/NiCr laminates with lower porosity, higher substrate temperature is required. The mechanical properties of the as-deposited samples and heat-treated samples were examined using tensile tests. The stress-strain curve of the as-deposited laminate shows a typical characteristic of multilayered materials and the fracture behavior is improved by annealing the samples at high temperatures. The tensile strength of the samples annealed at 760℃ is 658.4MPa, and the elongation reaches 6.2%.
