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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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Bhaduri, Debajyoti
Cardiff University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2021Effects of laser microtextured surfaces in condensation heat transfer
- 2020Effects of laser microtextured surfaces in condensation heat transfer
- 2020On the surface integrity of additive manufactured and post-processed AlSi10Mg partscitations
- 2019Evaluation of surface/interface quality, microstructure and mechanical properties of hybrid additive-subtractive aluminium partscitations
- 2017Ultrasonic assisted creep feed grinding of gamma titanium aluminide using conventional and superabrasive wheelscitations
- 2017On design and tribological behaviour of laser textured surfacescitations
- 2016The effects of laser surface texturing on scratch test and machining performance of tungsten carbide tools when turning Ti-6Al-4V
- 2016Laser texturing of tungsten carbide tools: the effects on tribological performance when machining Ti-6Al-4V alloy
- 2014Ultrasonic assisted creep feed grinding and dressing of advanced aerospace alloys
Places of action
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document
On the surface integrity of additive manufactured and post-processed AlSi10Mg parts
Abstract
The research centres on the evaluation of surface integrity of AlSi10Mg parts produced via laser-based powder bed fusion (LPBF) process,<br/>followed by vibratory surface finishing. The alloy is chosen for its applications in lightweight components used in electronic packaging,<br/>automotive and aerospace sectors. Initial experiments involve optimisation of key LPBF process parameters by analysing the surface roughness<br/>and density data of the built parts. A Taguchi L18 orthogonal array is used for the optmisation trials with variations in the laser power (P), beam<br/>scanning speed (v), hatch spacing (H) and island size (I). Latter experimental phase deals with microhardness and microstructure assessment of<br/>heat treated LPBF specimens that are produced using the optimised LPBF parameters, i.e. P: 250 W, v: 1500 mm/s, H: 75 μm and I: 2 mm.<br/>Microhardnesses of the annealed samples reduce by ~12% with respect to the as-built parts and the values remain almost unchanged from the<br/>annealed state following solution treatment and ageing. The fish-scale like melt-pools observed on the unheat treated samples begin to fade off<br/>in the annealed specimens and completely disappear after solution treatment and ageing, with silicon particles dispersed all over the aluminium<br/>matrix. The final experimental phase involves vibratory surface finishing of the as-built LPBF parts using a vibrating ceramic media mixed<br/>with different acid and amine based liquid compounds for 1-6 hours, followed by vibrating in a maize based media for another 1-6 hours.