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Influence of laser ...
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Čapek, J.Paul Scherrer Institute, Switzerland,Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen (CHE)
(författare)
Influence of laser powder bed fusion scanning pattern on residual stress and microstructure of alloy 718
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
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Elsevier Ltd,2022
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LIBRIS-ID:oai:DiVA.org:ri-60056
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https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-60056URI
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https://doi.org/10.1016/j.matdes.2022.110983DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-19171URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Funding details: Eidgenössische Technische Hochschule Zürich, ETH; Funding text 1: JČ gratefully acknowledges financial support from the Strategic Focus Area Advanced Manufacturing (SFA-AM) initiative of the ETH Board.
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financial support from the Strategic Focus Area Advanced Manufacturing (SFA-AM) initiative of the ETH Board
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A comprehensive investigation is undertaken on the effect of laser scanning pattern on the microstructure of cylindrical samples made of Alloy 718 processed by Laser Powder Bed Fusion. It is observed that the common alternate direction scanning of the laser results in a more homogeneous microstructure than the less common concentric line scans where significant microstructural heterogeneities are seen between the edges and the center of the sample. The investigation focuses on the precipitation, crystallographic texture, grain size, grain morphology and residual stresses utilizing synchrotron X-ray diffraction, neutron diffraction and electron microscopy. The heterogeneous microstructure of the sample processed with the concentric laser pattern influences the chemical composition of the matrix, which alters the reference “strain free” interplanar spacing used for evaluating the residual strain. The investigation underlines the significance of the processing parameters on the homogeneity of the microstructure and the effect of the chemical variations on the determination of residual stresses in materials such as Alloy 718, where strong local chemical variations occur because of different types and extent of precipitation. © 2022
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Polatidis, E.Paul Scherrer Institute, Switzerland,Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen (CHE)
(författare)
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Casati, N.Paul Scherrer Institute, Switzerland,Materials Science Group, Photon Science Division, Paul Scherrer Institute, 5232 Villigen (CHE)
(författare)
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Pederson, Robert,1973-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW(Swepub:hv)robped
(författare)
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Lyphout, ChristopheRISE,Tillverkningsprocesser,epartment of Manufacturing, RISE IVF AB, Mölndal (SWE)(Swepub:ri)christophely@ri.se
(författare)
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Strobl, M.Paul Scherrer Institute, Switzerland,Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen (CHE)
(författare)
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Paul Scherrer Institute, SwitzerlandLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen (CHE)
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Materials & design: Elsevier Ltd2210264-12751873-4197
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