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Modelling of anisotropic elastic properties in alloy 718 built by electron beam melting
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0002-4087-6467
Linköping University, Division of Engineering Materials, Department of Management and Engineering, Linköping, Sweden.
Linköping University, Division of Engineering Materials, Department of Management and Engineering, Linköping, Sweden.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0001-7787-5444
2018 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847, Vol. 34, no 5, p. 529-537Article in journal (Refereed) Published
Abstract [en]

Owing to the inherent nature of the process, typically material produced via electron beam melting (EBM) has a columnar microstructure. As a result of that, the material will have anisotropic mechanical properties. In this work, anisotropic elastic properties of EBM built Alloy 718 samples at room temperature were investigated by using experiments and modelling work. Electron backscatter diffraction data from the sample microstructure was used to predict the Young’s modulus. The results showed that the model developed in the finite element software OOF2 was able to capture the anisotropy in the Young’s modulus. The samples showed transversely isotropic elastic properties having lowest Young’s modulus along build direction. In addition to that, complete transversely isotropic stiffness tensor of the sample was also calculated. © 2018 Institute of Materials, Minerals and Mining.

Place, publisher, year, edition, pages
Taylor and Francis Ltd. , 2018. Vol. 34, no 5, p. 529-537
Keywords [en]
Elastic constants; Elasticity; Electron beam melting; Electron beams; Finite element method; Melting; Microstructure; Models, Alloy 718; Anisotropic elastic properties; Anisotropic mechanical properties; Columnar microstructures; EBSD; Electron back scatter diffraction; Finite element software; Transversely isotropic, Anisotropy
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-12134DOI: 10.1080/02670836.2018.1426258ISI: 000428303200005Scopus ID: 2-s2.0-85041234684OAI: oai:DiVA.org:hv-12134DiVA, id: diva2:1184229
Note

Published online: 28 Jan 2018

Available from: 2018-02-20 Created: 2018-02-20 Last updated: 2018-04-19Bibliographically approved

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Kumara, ChamaraNylén, Per

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