The Ni-base single crystal superalloy DD5 is commonly employed in critical parts of turbine blades and disks aeronautical engines. To improve the surface machining quality, single-factor experiments were carried out to investigate changes grinding force, morphology, chip morphology under different conditions (dry, conventional flood, minimum quantity lubrication). showed that flood lubrication ...

The phase evolution and thermal expansion behavior in superalloy during heating play an essential role controlling the size distribution of precipitates, as well optimizing thermomechanical properties. Synchrotron X-ray diffraction is able to go through interior sample can be carried out with situ environment, thus, it obtain more statistics information real time comparing traditional methods, ...

Nimonic 75 and Inconel 600 alloys are the Nickel-based superalloys which used in manufacturing gas turbine components. In current research, a superalloy Ni-based sheet were used, joint by resistant spot welded (RSW) machine at currents of 2, 4, 6 kA, pressure 5 7 bar, times 0.6, 0.9 1.2. Non- destructive inception methods light scanning electron method (SEM) optic microscope (LOM) to evaluate j...

Thermal-mechanical fatigue (TMF) tests and isothermal (IF) were conducted using thin-walled tubular specimens under strain-controlled conditions. The results of TMF showed a strong correlation between mechanical behavior temperature cycling. Under different phases loading, the hysteresis loop mean stress single crystal superalloy noticeable variations stress-controlled In test, cycling led to a...

Laser cladding is a well-established process to apply coatings on metals. However, on substrates considerably thinner than 1 mm it is only rarely described in the literature. In this work 200 µm thin sheets of nickel-based superalloy 718 are coated with a powder of a cobalt-based alloy, Co-28Cr-9W-1.5Si, by laser cladding. The process window is very narrow, therefore, a precisely controlled Yb ...

Inconel 718 is a Ni-Cr-Fe superalloy which presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These characteristics can be optimized with an appropriate control of microstructural features such as grain size and precipitation. Precipitates of different nature can form in these alloys, i.e. γ’’ (a metastable metallic compound Ni3N...