Laser directed energy deposition method has been widely employed in manufacturing
nickel based superalloy components of gas turbines and aero engines. However, the laser …

The axial loading high-and very-high-cycle fatigue tests with stress ratios of− 1 and 0.1 were
conducted to investigate the fracture mechanism, crack hindrance behavior, and life …

Typically, in the manufacturing of GH4169 superalloy forgings, the multi-process hot forming
that consists of pre-deformation, heat treatment and final deformation is required. This study …

During the directed energy deposition (DED) of superalloys, rapid cooling rates and
nonuniform temperature gradients usually lead to the formation of coarse columnar grains …

Since the as-cast microstructure benefits dynamic recrystallization (DRX) nucleation, the
present research is focused on the microstructure evolution associated with the dendrites …

For the forging of GH4169, there are often serious mixed and coarse grains that need to be
uniformly refined through a multi-stage annealing process. However, it will need to take a lot …

The hot deformation behavior and microstructure evolution of GH4169 superalloy were
investigated through hot compression experiments with a temperature range of 900–1100° …

In this paper, the material GH4169 used in the hot end components of aero-engine is
comprehensively benchmarked. A nickel-based lightweight high-entropy alloy with a nearly …

The effect of different deformation on the microstructure evolution and properties of 5.3 mm
thick GH4169 alloy plate was studied. The grain size and grain boundary characteristics …

研究了不同变形量对GH4169 合金5. 3 mm 厚板材组织演变和性能的影响, 采用光学显微镜分析,
EBSD 分析等方法观察了晶粒尺寸, 晶界特征, 并对比了两种变形量处理下材料的拉伸**度 …