Fatigue Crack Growth Behavior of Powder Metallurgical Nickel-based Superalloy using DCPD Method at Elevated Temperature
نویسندگان
چکیده
منابع مشابه
Prediction of crack growth in a nickel-based superalloy under fatigue-oxidation conditions
Prediction of oxidation-assisted crack growth has been carried out for a nickel-based superalloy at elevated temperature based on finite element analyses of oxygen diffusion, coupled with viscoplastic deformation, near a fatigue crack tip. The material constitutive behaviour, implemented in the finite element code ABAQUS via a user-defined material subroutine (UMAT), was described by a unified ...
متن کاملFracture and Fatigue-Crack Growth Behavior in Mo-12Si-8.5B Intermetallics at Ambient and Elevated Temperatures
perhaps the most progress has been made with alloys based on nickel and especially titanium aluminides. These alloys can Boron-containing molybdenum silicides have received some exhibit significant room temperature ductility, at least compared interest of late due to their superior low-temperature "pest" to other intermetallics, but have the major disadvantage that their resistance and comparab...
متن کاملEffects of microstructures on fatigue crack initiation and short crack propagation at room temperature in an advanced disc superalloy
Fatigue crack initiation and early short crack propagation behaviour in two microstructural variants of a recently developed Low Solvus, High Refractory (LSHR) disc superalloy at room temperature has been investigated by three-point bending with replication procedure. The results shows that fine gained (FG) LSHR possesses higher fatigue life due to its better crack initiation resistance, limite...
متن کاملHigh-Cycle Fatigue of Nickel-Based Superalloy ME3 at Ambient and Elevated Temperatures: Role of Grain-Boundary Engineering
High-cycle fatigue (HCF), involving the premature initiation and/or rapid propagation of cracks to failure due to high-frequency cyclic loading, remains a principal cause of failures in gas-turbine propulsion systems. In this work, we explore the feasibility of using “grain-boundary engineering” as a means to enhance the microstructural resistance to HCF. Specifically, sequential thermomechanic...
متن کاملMean vs. Life-limiting Fatigue Behavior of a Nickel-based Superalloy
The mean and the life-limiting behavior under fatigue of the nickel-based superalloy, IN100, separated (or converged) as a function of stress level and dwell loading. This behavior was related to the control of the life-limiting behavior by the smallcrack growth regime, producing its much slower response to stress level and dwell-time, relative to the mean-lifetime behavior. The lifetime probab...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean Society of Propulsion Engineers
سال: 2016
ISSN: 1226-6027
DOI: 10.6108/kspe.2016.20.2.011