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Simulation of Ti-6A...
Simulation of Ti-6Al-4V Additive Manufacturing Using Coupled Physically Based Flow Stress and Metallurgical Model
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- Babu, Bijish, Tec. Lic. 1979- (author)
- Swerim AB, Heating and Metalworking, Luleå, Sweden
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- Lundbäck, Andreas (author)
- Luleå tekniska universitet,Material- och solidmekanik
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- Lindgren, Lars-Erik (author)
- Luleå tekniska universitet,Material- och solidmekanik
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(creator_code:org_t)
- 2019-11-21
- 2019
- English.
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In: Materials. - : MDPI. - 1996-1944. ; 12:23
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- 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
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- dislocation density
- vacancy concentration
- Ti-6Al-4V
- additive manufacturing
- directed energy deposition
- Material Mechanics
- Materialmekanik
Publication and Content Type
- ref (subject category)
- art (subject category)
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