کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7127628 | 1461590 | 2019 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser assisted direct energy deposition of Hastelloy-X
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
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چکیده انگلیسی
Laser additive manufacturing using direct energy deposition (LAM-DED) process uses laser beam to melt powder particles and a thin layer of substrate/previously deposited material for building near net shape of engineering components. This communication reports the process development for LAM-DED of Hastelloy-X (Hast-X) and its characterization. Process window is developed through experimental program by varying LAM-DED process parameters for defect free deposition of Hast-X at maximum deposition rate. Optical microscopy shows microstructures with fine dendrites, while the presence of FCC matrices with fine crystallites (sizeâ¯=â¯25.56â¯nm) are revealed during X-ray diffraction studies. Residual stress measurement reveals predominantly tensile stress on the deposited surface with a maximum value of 252â¯MPa. Atomic Force Microscopy revealed uniform surface topography and measured average micro-hardness is 239â¯HV1.96N. This research work paves a way for the fabrication of Hast-X components for various engineering applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 109, January 2019, Pages 14-19
Journal: Optics & Laser Technology - Volume 109, January 2019, Pages 14-19
نویسندگان
A.N. Jinoop, C.P. Paul, K.S. Bindra,