کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5346880 1503551 2017 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanism of surface morphology in electron beam melting of Ti6Al4V based on computational flow patterns
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Mechanism of surface morphology in electron beam melting of Ti6Al4V based on computational flow patterns
چکیده انگلیسی
In this study, a 3D numerical model was proposed that uses the computational fluid dynamics (CFD) method to investigate molten pool formation in electron beam melting under different process parameters. Electron beam ray tracking was used to determine energy deposition in the powder bed model. The melt tracks obtained in this study can be divided into three categories: a balling pattern, distortion pattern and straight pattern. The 3D mesoscale model revealed that it is possible to obtain different molten pool temperature distributions, flow patterns and top surface morphologies using different process parameters. Detailed analysis was performed on the formation mechanism of both the balling defect and distortion pattern. The simulation results of the top surface morphology were also compared with experimental results and showed good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 419, 15 October 2017, Pages 150-158
نویسندگان
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