Improvement of stress corrosion cracking resistance by low cycle fatigue of a CrNiMoV steel
نویسندگان
چکیده
Abstract Low cycle fatigue often interacts with stress corrosion cracking behavior. In this work, the effect of low on susceptibility a CrNiMoV steel was investigated by interrupted tests in air and slow strain rate tensile 3.5 wt% NaCl solution at 180 °C. Microstructure evolution characterization verified cyclic softening found to improve resistance crack deflection along lath martensites due decrease residual stress, phase transformation increase low-energy structures. As semi-quantitative damage indicator, microstructure can be well described Kernel Average Misorientation (KAM) from Electron Backscatter Diffraction technique. The sensitivity predictable based linear relationship between KAM factor reduction area.
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ژورنال
عنوان ژورنال: npj Materials degradation
سال: 2023
ISSN: ['2397-2106']
DOI: https://doi.org/10.1038/s41529-023-00372-3