کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7954793 | 1513780 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fatigue properties of EBM as-built and chemically etched thin parts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
EBM as-built fatigue samples were manufactured from both fresh and recycled powder. They were characterised by laboratory X-ray tomography in order to observe the porosity and surface state. Chemical etching was used and a clear improvement of the surface geometry was observed and quantified through a roughness reduction. Fatigue tests were performed on as-built and etched samples. The fatigue resistance obtained for as-built samples is lower than that of machined samples; powder recycling tends to also diminish the fatigue resistance whereas chemical etching improves it significantly. The study of the fracture surfaces coupled with the comparison of tomographic scans before and after failure shows that the crack leading to failure always initiate from a surface notch-like defect resulting from a lack of fusion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Structural Integrity - Volume 7, 2017, Pages 158-165
Journal: Procedia Structural Integrity - Volume 7, 2017, Pages 158-165
نویسندگان
Theo Persenot, Jean-Yves Buffiere, Eric Maire, Remy Dendievel, Guilhem Martin,