Micromechanical aspects of deformation and failure of advanced Iron-Chromium-Aluminum alloys
Materialia(2022)
摘要
This work investigates the micromechanical deformation and failure mechanisms of advanced FeCrAl alloys developed for use in nuclear reactors as cladding material. Three different FeCrAl alloys (82-X)Fe-13Cr-5Al-X (X=Nb, TiC, 0 for base alloy) were investigated both in their as-received and welded states. In-situ neutron diffraction with simultaneous digital image correlation was used to determine micromechanical deformation mechanisms not only as a function of elemental composition but also as a condition of state (as-received vs. welded). Ex-situ X-ray computed tomography was used on as-deformed samples to help determine the failure mechanisms and void initiation strains.
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关键词
Neutron diffraction,Digital image correlation,X-ray computed tomography,FeCrAl alloys,Mechanical behavior,Failure
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