| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Piili, Heidi
University of Turku
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2023Impact of additive manufacturing on titanium supply chain: Case of titanium alloys in automotive and aerospace industriescitations
- 2023Impact of additive manufacturing on titanium supply chain: Case of titanium alloys in automotive and aerospace industriescitations
- 2023Electrochemical properties of graphite/nylon electrodes additively manufactured by laser powder bed fusioncitations
- 2021Mechanical properties and microstructure of additively manufactured stainless steel with laser welded jointscitations
- 2021Prospects for laser based powder bed fusion in the manufacturing of metal electrodes: A reviewcitations
- 2020Additive Manufacturing—Past, Present, and the Futurecitations
- 2020Effects of manufacturing parameters and mechanical post-processing on stainless steel 316L processed by laser powder bed fusioncitations
- 2020Characterization of part deformations in laser powder bed fusion of stainless steel 316Lcitations
- 2020Testing and analysis of additively manufactured stainless steel CHS in compressioncitations
- 2020Integration of Simulation Driven DfAM and LCC Analysis for Decision Making in L-PBFcitations
- 2019Effective parameters on the fatigue life of metals processed by powder bed fusion technique: A short reviewcitations
- 2019Study of phenomenon of fibre-laser-MIG/MAG-hybrid-weldingcitations
- 2018Correlation between pyrometer monitoring and active illuminaton imaging of laser assisted additive manufacturing of stainless steelcitations
- 2018Interaction between laser beam and paper materialscitations
- 2018Effect of process parameters to monitoring of laser assisted additive manufacturing of alumina ceramicscitations
- 2018Laser scribing of stainless steel with and without work mediacitations
- 2017Possibilities of CT Scanning as Analysis Method in Laser Additive Manufacturingcitations
- 2017Preliminary Investigation on Life Cycle Inventory of Powder Bed Fusion of Stainless Steelcitations
- 2015Preliminary comparison of properties between Ni-electroplated stainless steel parts fabricated with laser additive manufacturing and conventional machiningcitations
- 2015Overview of Sustainability Studies of CNC Machining and LAM of Stainless Steelcitations
- 2015Possibilities of CT Scanning as Analysis Method in Laser Additive Manufacturingcitations
- 2015Preliminary Investigation of Keyhole Phenomena during Single Layer Fabrication in Laser Additive Manufacturing of Stainless Steelcitations
- 2014Katsaus lisäävän valmistuksen (aka 3D-tulostus) mahdollisuuksiin ja kustannuksiin metallisten tuotteiden valmistuksessa: Case jauhepetitekniikka ; Overview to possibilities and costs of additive manufacturing (aka 3D printing) of metallic materials: Case powder bed fusion technique
- 2014Monitoring of temperature profiles and surface morphologies during laser sintering of alumina ceramicscitations
- 2013Digital design and manufacturing process comparison for new custom made product family – a case study of a bathroom faucetcitations
- 2010The characteristics of high power fibre laser weldingcitations
Places of action
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article
Mechanical properties and microstructure of additively manufactured stainless steel with laser welded joints
Abstract
Powder bed fusion (PBF) is a commonly employed metal additive manufacturing (AM) process in which components are built, layer-by-layer, using metallic powder. The component size is limited by the internal build volume of the employed PBF AM equipment; the fabrication of components larger than this volume therefore requires mechanical joining methods, such as laser welding. There are, however, very limited test data on the mechanical performance of PBF metal with laser welded joints. In this study, the mechanical properties of PBF built 316L stainless steel parts, joined together using laser welding to form larger components, have been investigated; the microstructure of the components has also been examined. 33 PBF 316L stainless steel tensile coupons, with central laser welds, welded using a range of welding parameters, and with coupon half parts built in two different orientations, were tested. The porosity, microhardness and microstructure of the welded coupons, along with the widths of the weld and heat-affected zone (HAZ), were characterised. The PBF base metal exhibited a typical cellular microstructure, while the weld consisted of equiaxed, columnar and cellular dendrite microstructures. Narrow weld regions and HAZs were observed. The PBF base metal was found to have higher proof and ultimate strengths, but a similar fracture strain and a lower Young’s modulus, compared with conventionally manufactured 316L stainless steel. The strengths were dependent on the build direction – the vertically built specimens showed lower proof strengths than the horizontal specimens. The laser welds generally exhibited lower microhardness, proof strengths and fracture strains than the PBF base metal which correlated with the observed structure. This work has demonstrated that PBF built parts can be joined by laser welding to form larger components and provided insight into the resulting strength and ductility.