Effect of broaching machining parameters, residual stresses and cold work on fatigue life of Ni-based turbine disk P/M alloy at 650 °C
| Autor: | Louis J. Ghosn, Jack Telesman, Tim Gabb, P. T. Kantzos |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Alloy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Turbine Industrial and Manufacturing Engineering Broaching 020303 mechanical engineering & transports 0203 mechanical engineering Machining Mechanics of Materials Residual stress Modeling and Simulation engineering Surface roughness General Materials Science Composite material Tool wear 0210 nano-technology Failure mode and effects analysis |
| Zdroj: | International Journal of Fatigue. 150:106328 |
| ISSN: | 0142-1123 |
| DOI: | 10.1016/j.ijfatigue.2021.106328 |
| Popis: | Machining parameters can influence fatigue life by altering residual stresses, cold work and surface roughness. A study was performed to examine the effect of various broaching machining parameters on high temperature fatigue lives of a nickel-based disk alloy. The influence of tool wear and broaching speed were studied and their effect on residual stresses, cold work and surface roughness was quantified. These variables were shown to have a substantial effect on fatigue lives, the failure mode type and location. The relationships between these parameters and fatigue crack initiation mechanisms are detailed. Statistical analyses evaluating these relationships are presented. |
| Databáze: | OpenAIRE |
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