WebThe J-integral at the grain boundary cracking largely fluctuated and shows higher average magnitude than that in the other part. da/dN-J rela- tion reveals that the intergranular crack has weaker resistance against propagation than that in the transgranular one, though it shows eminent fluctuation. WebThe creep behavior of a multinary single crystal Co-base superalloy has been compared for uniaxial tension and compression of 400 MPa applied along [001] at 850 °C. Creep under tensile stress...
Shear mechanisms of the γ′ phase in single-crystal superalloys and ...
WebP. JONŠTA et al.: THERMAL CONDUCTIVITY OF NICKEL SUPERALLOY MAR-M247 METALURGIJA 55 (2016) 3, 420-422 Ni atoms occupy space in the middle of the walls. … WebAbstract In this contribution it will be shown how the metal powder bed fusion technology electron beam melting (EBM) enables a successful crack- and defect-free processing of the non-weldable Ni-based superalloy Alloy 247. Besides a defect-free processing, EBM process capabilities offer unique opportunities to tailor the microstructure according to … misty 1961 cast
Microstructure and hardness evolution in MAR-M247 Ni …
WebThe development of dislocation configurations in a single-crystal superalloy during creep and especially the shear mechanism of theγ′ phase is investigated by a transmission electron microscopy (TEM) study. Detailed analysis shows that at low strains and at coherent interfaces, shearing occurs by dissociation of matrix dislocations at theγ/γ′ … Web17 feb. 2024 · The Ni-based superalloy is used as the turbine blade, which is subject to the coupling effect of temperature and super-gravity during service. As the Ni-based superalloys are difficult to become homogenous after using the solid solution heat treatment, a study on morphology and composition distribution of Ni-base superalloys with segregation during … Web1 sep. 2013 · The MAR-M247 superalloy was produced via vacuum induction melting and investment casting. The samples were solutioned between 1185 and 1270 °C and aged between 770 and 980 °C. The as … misty 120 menthol coupons