✍ Scribed by M.Y Nazmy; C Wüthrich
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
This paper summarizes the results from a comprehensive multidisciplinary study to better understand the role of niobium and other strengthening elements in enhancing crack growth by oxygen in nickel-based superalloys at high temperatures, and considers its importance for materials damage prognosis a
Nimonic 263 alloy, widely used for combustion chamber applications in aeroengines, was exposed to air at 1020 °C to study the oxidation-creep interaction at 780 °C in the stress range of 160-275 MPa. Prior exposure of the alloy led to degradation of creep properties, resulting in enhanced creep rate
a 1 0 0 Dislocations are observed in nickel-base superalloys after creep deformation at high temperatures and low stresses. They are formed in the ␥/␥ interfaces by a three step mechanism. First, primary dislocations with Burgers vector a/2 1 0 1 and 60 • character are left behind in the interfaces