Process-to-structure mapping of selective laser melting of a nickel based superalloy via phase field modelling

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Abstract

A major challenge in additive manufacturing is to relate process parameters and microstructure. This relation can be explored with phase field method coupled to a larger scale heat transfer model. Phase field method is the state-of-the-art method to simulate the kinetics of solidification, including the development of microstructural features including grain morphology, solute distribution, and formation of metastable phases. In this work we study the selective laser melting (SLM) of a nickel based superalloy. Taking into account the major segregating chemical elements, the solidification patterns are modeled using the phase field method. The large scale heat transfer model is used to estimate the temperature distribution and history, specifically thermal gradients and cooling rates.

Original languageEnglish
Title of host publicationEuro PM 2018 Congress and Exhibition
PublisherEuropean Power Metallurgy Association EPMA
ISBN (Print)978-1-899072-50-7
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018 - Bilbao, Spain
Duration: 14 Oct 201818 Oct 2018
https://www.europm2018.com/ (Event site)
https://www.epma.com/publications/euro-pm-proceedings/product/euro-pm2018-proceedings-usb (Proceedings)

Conference

ConferenceEuropean Powder Metallurgy Congress and Exhibition, Euro PM 2018
CountrySpain
CityBilbao
Period14/10/1818/10/18
Internet address

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