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Varestraint weldability testing of additive manufactured alloy 718
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
2018 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, p. 1-6Article in journal (Refereed) Epub ahead of print
Abstract [en]

The weldability in terms of susceptibility towards hot cracking of selective laser melted (SLM) Alloy 718 was investigated and wrought Alloy 718 was used as reference material. Varestraint testing was carried out by means of investigating the weldability in three conditions; (1) SLM as-built, (2) hot isostatic pressing at 1160°C at 105MPa for 3h and (3) wrought Alloy 718 in the mill-annealed condition. The material exhibited intergranular cracking in all three conditions; however,theSLMHIPedconditionhadanincreasedmagnitudeofcracksusceptibilityatallstrain levels.TheincreasedsensitivityoftheHIPedmaterialwasduetothesignificantlylargergrainsize incomparison.TheSLMas-builtconditionshowedthesamedegreeofcrackingasthewrought material.

Place, publisher, year, edition, pages
2018. p. 1-6
Keywords [en]
Weldability; Selective laser melting; Alloy718
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-12077DOI: 10.1080/13621718.2018.1437338Scopus ID: 2-s2.0-85041916665OAI: oai:DiVA.org:hv-12077DiVA, id: diva2:1182379
Note

Published online: 12 Feb 2018

Available from: 2018-02-13 Created: 2018-02-13 Last updated: 2018-02-26Bibliographically approved

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Raza, TahiraAndersson, JoelSvensson, Lars-Erik

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