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Temperature and Microstructure Evolution in Gas Tungsten Arc Welding Wire Feed Additive Manufacturing of Ti-6Al-4V
Department of Engineering Science, University West, Trollhättan, Sweden.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-0053-5537
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0001-5921-1935
Department of Engineering Science, University West, Trollhättan, Sweden. GKN Aerospace Engine Systems, Trollhättan, Sweden.
2019 (engelsk)Inngår i: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 12, nr 21, artikkel-id 3534Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In the present study, the gas tungsten arc welding wire feed additive manufacturing process is simulated and its final microstructure predicted by microstructural modelling, which is validated by microstructural characterization. The Finite Element Method is used to solve the temperature field and microstructural evolution during a gas tungsten arc welding wire feed additive manufacturing process. The microstructure of titanium alloy Ti-6Al-4V is computed based on the temperature evolution in a density-based approach and coupled to a model that predicts the thickness of the α lath morphology. The work presented herein includes the first coupling of the process simulation and microstructural modelling, which have been studied separately in previous work by the authors. In addition, the results from simulations are presented and validated with qualitative and quantitative microstructural analyses. The coupling of the process simulation and microstructural modeling indicate promising results, since the microstructural analysis shows good agreement with the predicted alpha lath size.

sted, utgiver, år, opplag, sider
MDPI, 2019. Vol. 12, nr 21, artikkel-id 3534
Emneord [en]
additive manufacturing, titanium, Ti-6Al-4V, microstructural modeling, metal deposition, finite element method
HSV kategori
Forskningsprogram
Materialmekanik; Materialteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-76788DOI: 10.3390/ma12213534PubMedID: 31661882Scopus ID: 2-s2.0-85074651225OAI: oai:DiVA.org:ltu-76788DiVA, id: diva2:1371616
Merknad

Validerad;2019;Nivå 2;2019-11-20 (johcin)

Tilgjengelig fra: 2019-11-20 Laget: 2019-11-20 Sist oppdatert: 2019-11-20bibliografisk kontrollert

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