چکیده مقاله
A comprehensive numerical model is developed to predict solidification microstructures in the additivemanufacturing laser powder bed fusion LPBF process of the binary Fe 17wt%Cr model alloy The mathematical modelis based on a finite volume thermal analysis to accurately predict geometry, temperature distribution and velocity field ofthe resulting molten pool, as well as a phase field microscopic model to simulate rapid solidification microstructures,focusing on segregation of alloying elements, columnar grain structure, and solidification modes The solidifiedmicrostructure can exhibit different forms of equiaxed, dendritic, cellular, or planar structures as the G/V ratio increases The study revealed that a high G/V value is often observed in the LPBF, leading to a preference for cellulargrowth overcolumnar dendritic growth The model is able to predicts Cr concentration profiles, columnar arm spacing and orientation
کلیدواژهها
نویسندگان
Sara Pourmand
PhD Student, Department of Materials Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶ ۸۳۱۱۱, Iran
Ahmad Kermanpur
Professor, Department of Materials Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶ ۸۳۱۱۱, Iran
Ahmad Rezaeian
Associate Professor, Department of Materials Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶ ۸۳۱۱۱, Iran
Amin Jafari-Ramiani
Assistant Professor, Department of Materials and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran
شیوه ارجاع
Pourmand, Sara and Kermanpur, Ahmad and Rezaeian, Ahmad and Jafari-Ramiani, Amin,1403,Application of phase field analysis for predicting solidificationmicrostructure in laser power bed fusion,7th International Conference on Welding and Non Destructive Testing & 25th National Conference on Welding & Inspection & 14th National Conference on NDT & 3nd National Conference on Additive Manufacturing,Tehran
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