Role of Ultrasonic Shot Peening in Environmental Hydrogen Embrittlement Behavior of 7075-T6 Alloy
نویسندگان
چکیده
The effect of ultrasonic shot peening on the environmental hydrogen embrittlement behavior 7075-T6 aluminum alloy is investigated. tensile specimens were treated by for 50 s. Surface residual stress and depth under surface evaluated using an X-ray diffractometer. Then, tested in humid air dry nitrogen gas slow strain rate technique. results showed that shot-peened specimen has a superior resistance. Further, changes fracture mode from intergranular to transgranular one. It was suggested shot-peening two effects behavior; distribution inside layer introducing dislocations/vacancies as traps reducing normalized amount trapped per unit length grain boundary.
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ژورنال
عنوان ژورنال: Hydrogen
سال: 2021
ISSN: ['2673-4141']
DOI: https://doi.org/10.3390/hydrogen2030020