Simulation of Ti-6Al-4V Additive Manufacturing Using Coupled Physically Based Flow Stress and Metallurgical Model

Babu, Bijish,Tec. Lic.1979-Swerim AB, Heating and Metalworking, Luleå, Sweden (författare)

Validerad;2019;Nivå 2;2019-12-09 (johcin)
Simulating the additive manufacturing process of Ti-6Al-4V is very complex due to the microstructural changes and allotropic transformation occurring during its thermomechanical processing. The α -phase with a hexagonal close pack structure is present in three different forms—Widmanstatten, grain boundary and Martensite. A metallurgical model that computes the formation and dissolution of each of these phases was used here. Furthermore, a physically based flow-stress model coupled with the metallurgical model was applied in the simulation of an additive manufacturing case using the directed energy-deposition method. The result from the metallurgical model explicitly affects the mechanical properties in the flow-stress model. Validation of the thermal and mechanical model was performed by comparing the simulation results with measurements available in the literature, which showed good agreement

TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
dislocation density
vacancy concentration
Ti-6Al-4V
additive manufacturing
directed energy deposition
Material Mechanics
Materialmekanik

Lundbäck, AndreasLuleå tekniska universitet,Material- och solidmekanik(Swepub:ltu)andlun (författare)
Lindgren, Lars-ErikLuleå tekniska universitet,Material- och solidmekanik(Swepub:ltu)lel (författare)
Swerim AB, Heating and Metalworking, Luleå, SwedenMaterial- och solidmekanik (creator_code:org_t)

Av författaren/redakt...: Babu, Bijish, Te ...; Lundbäck, Andrea ...; Lindgren, Lars-E ...

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