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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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Kartal, Mehmet E.
University of Aberdeen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024The influence of post-thermal treatments on microstructure and mechanical properties in A20X alloy fabricated through powder bed fusioncitations
- 2024Crystal plasticity based constitutive model for deformation in metastable β titanium alloyscitations
- 2022A Multiscale Constitutive Model for Metal Forming of Dual Phase Titanium Alloys by Incorporating Inherent Deformation and Failure Mechanismscitations
- 2022Effect of Hydrogen and Defects on Deformation and Failure of Austenitic Stainless Steel
- 2021Mesoscale Model for Predicting Hydrogen Damage in Face Centred Cubic Crystalscitations
- 2021Computational Modelling of Microstructural Deformation in Metastable β Titanium Alloys
- 2020Modelling Hydrogen Induced Stress Corrosion Cracking in Austenitic Stainless Steelcitations
- 2020Classifying shape of internal pores within AlSi10Mg alloy manufactured by laser powder bed fusion using 3D X-ray micro computed tomography: influence of processing parameters and heat treatmentcitations
- 2020Hydrogen effect on plastic deformation and fracture in austenitic stainless steel
- 2020Crystal Plasticity based Study to Understand the Interaction of Hydrogen, Defects and Loading in Austenitic Stainless Steel Single Crystalscitations
- 2019A CPFEM based study to understand the void growth in high strength dual-phase Titanium alloy (Ti-10V-2Fe-3Al)citations
- 2019Representative volume element (RVE) based crystal plasticity study of void growth on phase boundary in titanium alloyscitations
- 2017Three-dimensional in situ observations of compressive damage mechanisms in syntactic foam using X-ray microcomputed tomographycitations
- 2016The effect of specimen size and Surface conditions on the local mechanical properties of 14MoV6 ferritic–pearlitic steelcitations
Places of action
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article
The influence of post-thermal treatments on microstructure and mechanical properties in A20X alloy fabricated through powder bed fusion
Abstract
This study compares the impact of two separate post-thermal treatments on microstructure and mechanical properties in novel Al-Cu-Ti based alloy (A20X) fabricated by the powder bed fusion additive manufacturing method. As-built samples of A20X were thermally treated by either undergoing solution heat treatment and ageing (T7) or hot isostatic pressing (HIP) and ageing. While both the heat treatment methods produced similar tensile properties, superior fatigue performance throughout the entire fatigue load range was obtained in the HIP and aging condition. A novel pore shape classification approach was developed to investigate the influence of each stage of the post-thermal treatments on porosity and individual pore shapes using X-ray microcomputed tomography. This novel approach uses existing pore shape classification techniques to not only categorise pore shapes but also quantify the volume associated with individual pores. It was found that the T7 procedure resulted in increasing internal defect density and altering the shape of pre-existing pores while HIP collapsed all the detectable internal pores of the as-built material prior to the aging process which led to the change in the shape of reopened pores. A detailed fractography analysis showed processing induced defects significantly influence fatigue life. Novel findings in this study provide a useful tool to determine the effects of different heat treatment procedures on the changes in unavoidable processing-induced defects and the mechanical properties, and to better understand the interdependency between pores and fatigue life in lightweight high-strength A20X alloy. The superior tensile and fatigue properties of this alloy with its high-temperature performance make A20X a desirable candidate for safety-critical aerospace applications.