| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Pinkerton, Andrew J.
Lancaster University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (57/57 displayed)
- 2015Advances in the modelling of laser direct metal deposition (invited)citations
- 2014Parametric study of development of inconel-steel functionally graded materials by laser direct metal depositioncitations
- 2013Direct laser deposition with different types of 316L steel particlecitations
- 2013An anisotropic enhanced thermal conductivity approach for modelling laser melt pools for Ni-base super alloyscitations
- 2012Characterization of weld bead geometry in fibre laser butt welding of mild steel sheets by means of statistical modelling
- 2012Laser surface modification using Inconel 617 machining swarf as coating materialcitations
- 2011Porous structures fabrication by continuous and pulsed laser metal deposition for biomedical applications; modelling and experimental investigationcitations
- 2011Microcomputed tomography analysis of intralayer porosity generation in laser direct metal deposition and its causescitations
- 2011A cfd model of laser cladding: From deposition head to melt pool dynamics
- 2011An analytical-numerical model of laser direct metal deposition track and microstructure formationcitations
- 2011Material-efficient laser cladding for corrosion resistance
- 2011Laser metal deposition of steel components using machining waste as build material
- 2011A comparative study of laser direct metal deposition characteristics using gas and plasma-atomized Ti–6Al–4V powderscitations
- 2011Numerical investigation of powder heating in coaxial laser metal depositioncitations
- 2011Innovative reconsolidation of carbon steel machining swarf by laser metal depositioncitations
- 2010X-ray analysis of pore formation in direct metal deposition and its causes
- 2010Influence of melt pool convection on residual stress induced in laser cladding and powder deposition
- 2010Selective laser sintering of calcium polyphosphate - Polyvinyl alcohol for biomedical applications
- 2010A CFD model of the laser, coaxial powder stream and substrate interaction in laser claddingcitations
- 2010Net shape laser butt welding of mild steel sheets
- 2010An iterative, energy-mass balance model for laser metal deposition
- 2010Laser direct deposition of carbon steel machining waste
- 2010The effect of laser beam geometry on cut path deviation in diode laser chip-free cutting of glasscitations
- 2010Laser direct metal deposition
- 2010Effects of melt pool variables and process parameters in laser direct metal deposition of aerospace alloyscitations
- 2010A numerical investigation of powder heating in coaxial laser direct metal depositioncitations
- 2009Oxide formation in acute laser percussion drilled holes in single crystal nickel superalloy
- 2009The significance of melt pool variables in laser direct deposition of functionally graded aerospace alloys
- 2009The significance of melt pool variables in laser direct deposition of functionally graded aerospace alloys
- 2009A method and model for deposition of Ti-6Al-4V with controlled porosity
- 2008Direct laser deposited titanium with controlled porosity for bone tissue engineering
- 2008Direct laser deposited titanium with controlled porosity for bone tissue engineering
- 2008Direct diode laser deposition of functionally graded Ti-6AL-4V and inconel 718 components
- 2008Three dimensional analytical and finite element methods for simulating a moving melt pool with mass addition
- 2007An analytical model of beam attenuation and powder heating during coaxial laser direct metal depositioncitations
- 2007A verified model of laser direct metal deposition using an analytical enthalpy balance method
- 2007Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities
- 2007Stress distributions in multilayer laser deposited Waspaloy parts measured using neutron diffraction
- 2007Theoretical analysis of the coincident wire-powder laser deposition processcitations
- 2006Thermal and microstructural aspects of the laser direct metal deposition of waspaloycitations
- 2006Thermal and microstructural aspects of the laser direct metal deposition of waspaloy
- 2006An experimental and theoretical investigation of combined gas- and water-atomized powder deposition with a diode lasercitations
- 2006An experimental and theoretical investigation of combined gas- and water-atomized powder deposition with a diode lasercitations
- 2006Diode laser metal deposition: The effect of pulsed beam parameters on superalloy microstructure and deposit morphology
- 2006Rapid additive manufacturing of functionally graded structures using simultaneous wire and powder laser depositioncitations
- 2006Simultaneous wire- and powder-feed direct metal deposition: An investigation of the process characteristics and comparison with single-feed methodscitations
- 2006Combining wire and coaxial powder feeding in laser direct metal deposition for rapid prototypingcitations
- 2006The effect of powder recycling in direct metal laser deposition on powder and manufactured part characteristics
- 2006Effect of beam angle on HAZ, recast and oxide layer characteristics in laser drilling of TBC nickel superalloyscitations
- 2005Mechanical and electrochemical properties of multiple-layer diode laser cladding of 316L stainless steelcitations
- 2005The effect of process parameters on residual stresses within an inconel 718 part produced by the Direct Laser Deposition process
- 2005Explaining microstructural and physical variations in rapid additive manufactured waspaloy parts through the laser-deposition thermal cycle
- 2005Explaining microstructural and physical variations in rapid additive manufactured waspaloy parts through the laser-deposition thermal cycle
- 2005Alternative nozzle and metal delivery methods for laser-assisted metal deposition
- 2005Microstructure characterisation and process optimization of laser assisted rapid fabrication of 316L stainless steelcitations
- 2004Combined wire and powder feeding laser direct metal deposition for rapid prototyping
- 2004Diode laser deposition of microstructurally graded components using gas- and water-atomised powder blends
Places of action
| Organizations | Location | People |
|---|
article
An anisotropic enhanced thermal conductivity approach for modelling laser melt pools for Ni-base super alloys
Abstract
Ni-basesuperalloys are extensively used in high temperature gas turbine engines and energy industries. Due to the high replacement costs of these components, there are huge economic benefits of repairing these components. Laser direct metal deposition processes (LDMD) based on laser cladding, laser fusion welding, and laser surface melting are some of the processes which are used to repair these high value components. Precise control of these processes is important to achieve the desired microstructure, stress distribution, distortions due to thermal stresses and other important output variables. Modelling of these processes is therefore an extremely important activity for achieving any degree of control/optimisation. However, modelling of these processes is not straight-forward due to meltpool flows dominated by Marangoni and buoyancy driven convection. Detailed CFD models are required for accurate prediction of meltpool geometry. But these models are computationally expensive and require greater expertise. To simplify and speed up the modelling process, many researchers have used the isotropic enhancedthermalconductivityapproach to account for meltpool convection. A recent study on mild steel has highlighted that isotropic enhancedthermalconductivityapproach is not able to accurately predict the meltpool geometry. Based on these findings a new approach namely anisotropicenhancedthermalconductivityapproach has been developed. This paper presents an analysis on the effectiveness of the isotropic and anisotropicenhancedthermalconductivityapproaches for laser melting of Inconel 718 using numerical technique. Experimental meltpool geometry has been compared with modelling results. It has been found that the isotropic enhancedthermalconductivityapproach is not able to accurately predict the meltpool geometry, whereas anisotropicenhancedthermalconductivityapproach gives good agreement with the experimental results.