کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
659372 1458101 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of transport phenomena in direct laser deposition of metal matrix composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Modeling of transport phenomena in direct laser deposition of metal matrix composite
چکیده انگلیسی

Direct laser deposition of metal matrix composite provides a very promising method to fabricate non-homogeneous material in one step directly from CAD drawings. During this process, reinforcing hard particle phase is mixed with the liquid matrix material to change the material property. Despite its usefulness, an understanding of interaction between the reinforcing particle and matrix material in the molten pool still remains as a challenge to determining the final properties of the fabricated composite. In this paper, distinct comprehensive modeling is presented to describe the complex transport phenomena during direct laser deposition of metal matrix composite. The molten pool thermal and fluidic behavior with the inter-phase coupling between particles and matrix material is modeled. To track the particle distribution, a species transport equation for particle mass fraction, as well as algebraic expressions considering possible different phase velocities, is combined with the other deposition governing equations. The mixture properties of composite are obtained by incorporating the volume fraction of each phase. The simulated average particle volume fractions agree with the experimental results and the model can be used to design the properties of the composite synthesised by the laser direct deposition process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 54, Issues 25–26, December 2011, Pages 5319–5326
نویسندگان
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