کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8044313 1518918 2018 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and properties in the weld surface of friction stir welded 7050-T7451 aluminium alloys by laser shock peening
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Microstructure and properties in the weld surface of friction stir welded 7050-T7451 aluminium alloys by laser shock peening
چکیده انگلیسی
Laser shock peening (LSP) was used to treat the weld surface of friction stir welded joints of 7050-T7451 alloys. After the LSP, a large number of micro-holes were formed in the shock region. The hardness of thermo-mechanically affected zone (TMAZ) and heat-affected zone (HAZ) at a distance from the upper surface of 0.5 mm increased obviously. The average hardness increased 9HV. The fatigue life after the LSP increases 30%, 27% and 5% when the loading stress is 200 MPa, 250 MPa and 300 MPa. The residual stress in weld nugget zone, TMAZ and HAZ generated a compressive residual stress, and the biggest value is 100 MPa after the LSP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 152, June 2018, Pages 25-29
نویسندگان
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