In-Situ Characterization of Microstructural Changes in Alloy 718 during High-Temperature Low-Cycle Fatigue
نویسندگان
چکیده
Components made of nickel-based alloys are typically used for high-temperature applications because their high corrosion resistance and very good creep fatigue strength, even at temperatures around 1000 °C. Corrosive damage can significantly reduce the mechanical properties expected remaining service life components. In present study, a new method was introduced to continuously determine change in microstructure occurring as result exposure temperature cyclic loading. For this purpose, conventional low-cycle test procedure modified non-destructive, electromagnetic testing technique integrated into servohydraulic rig monitor microstructural changes. The measured values correlate with magnetic material specimen, allowing changes specimen’s subsurface zone be analyzed upon fatigue. Specifically, it possible show how different loading parameters affect maximum chromium depletion well depth depletion, which influences material. It also observed that specimen failure is preceded by certain degree zone. Thus, integration technology opens up possibilities improved prediction via continuous recording
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ژورنال
عنوان ژورنال: Metals
سال: 2022
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met12111871