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Varestraint testing of selective laser additive manufactured alloy 718: influence of grain orientation
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0002-4598-4790
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0001-9065-0741
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0003-2560-0531
2019 (English)In: Metals, ISSN 2075-4701, Vol. 9, no 10, article id 1113Article in journal (Refereed) Published
Abstract [en]

The effect of grain orientation on hot cracking susceptibility of selective laser additive manufactured Alloy 718 was investigated by Varestraint testing. Electron backscattered diffraction showed that cracks in heat affected zone (HAZ) of the welded samples occurred in high angle grain boundaries. The extent of HAZ cracking was smaller in samples tested parallel to the elongated grain orientation and larger in samples transverse to the elongated grain orientation. However, for solidification cracking in the weld metal, no significant difference with respect to grain orientation in the base metal was found. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.

Place, publisher, year, edition, pages
MDPI AG , 2019. Vol. 9, no 10, article id 1113
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-14708DOI: 10.3390/met9101113Scopus ID: 2-s2.0-85074226227OAI: oai:DiVA.org:hv-14708DiVA, id: diva2:1370229
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VinnovaAvailable from: 2019-11-14 Created: 2019-11-14 Last updated: 2019-11-18

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Raza, TahiraAndersson, JoelSvensson, Lars-Erik

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