کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7130059 1461616 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced plasticity of bulk metallic glass in different aspect ratios via laser shock peening with multiple impacts
ترجمه فارسی عنوان
انعطاف پذیری شیشه های فلزی بزرگ در نسبت های مختلف نسبت به شیب لیزر با اثرات متعدد
کلمات کلیدی
لرزش ضربه لیزر، شیشه فلزی بزرگ، نسبت ابعاد، تغییر شکل فشرده، حجم آزاد بیش از حد،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
In this study laser shock peening (LSP) with multiple laser impacts was used to improve the mechanical properties especially the plasticity of Zr35Ti30Cu8.25Be26.75 bulk metallic glass (BMG) pillars in two aspect ratios (1:1 and 2:1). It was found that, with increasing laser impacts up to 5, the compression plastic strain of BMG pillar with aspect ratio of 1:1 increased from 0 to 1.48% and the compression strength increased significantly from 1569 MPa to 1721 MPa. With further laser impacts beyond 5, the changes in the plasticity and the compression strength were observed to be insignificant. Considering the effect of sample geometry at the same laser impacts, it could be concluded that the BMG pillars with smaller aspect ratio of 1:1 had better mechanical properties than that of the lager BMG pillars with aspect ratio of 2:1. Besides, the elastic strain limit of BMG pillars with LSP was not only independent of the laser impacts, but also irrelevant to the aspect ratio. At last, we discussed the reason for the increase of plasticity in view of the creation of excess free volume during LSP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 83, September 2016, Pages 43-48
نویسندگان
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