کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7177005 1466742 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristics of surface layers formed on inconel 718 by laser shock peening with and without a protective coating
ترجمه فارسی عنوان
خصوصیات لایه های سطحی بر روی ناخن 718 با شیب لیزری با و بدون پوشش محافظ شکل می گیرد
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
Coupons of a Ni base super alloy, Inconel alloy 718 (IN718) were laser shock peened with and without an ablative layer and resulting microstructure and residual stress state were studied. Laser shock peening without a protective overlay results in both mechanical and thermal loading of the material, leading to melting and re-solidification on the surface along with deformation due to laser induced shock wave. The surface shows presence of a non-uniform recast layer which increases the roughness of the surface and also results in a tensile state of residual stresses on surface. The recast layer has areas with modified chemistry and shows presence of nano particles deposited on top of the matrix. In this study, recast layer formed in Inconel alloy 718 (IN718) as a result of laser shock peening without protective overlay was characterized and compared with surface condition of a sample peened with a protective overlay. These results are presented and discussed in relation with those of previous studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 225, November 2015, Pages 463-472
نویسندگان
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