Role of melt behavior in modifying oxidation distribution using an interface incorporated model in selective laser melting of aluminum-based material

摘要: A transient three dimensional model for describing the molten pool dynamics and response of oxidation film evolution in selective laser melting aluminum-based material is proposed. The physical difference both sides scan track, powder-solid transformation temperature dependent properties are taken into account. It shows that heat energy tends to accumulate powder rather than as-fabricated part, leading formation asymmetrical patterns contour attendant larger dimensions phase. As a higher volumetric density applied (≥1300 J/mm3), severe evaporation produced with upward direction velocity vector irradiated region while restricted operating obtained part. continuously changes from downward one as speed increases 100 mm/s 300 mm/s, promoting th...