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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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Li, Jiehua
Montanuniversität Leoben
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Semi-analytical and experimental heat input study of additively manufactured Zr-based bulk metallic glasscitations
- 2024Investigation on the Duration of Action of Mg3N2 as a Grain Refiner for AZ80 Alloycitations
- 2023Effect of Ca and P on the Size and Morphology of Eutectic Mg2Si in High-Purity Al-Mg-Si Alloyscitations
- 2023Revealing effects of solute Ta on solidification and precipitation of Al-7Si-0.3Mg based alloyscitations
- 2023Effect of Mn addition on microstructure, mechanical properties and die soldering of rheocasting Al-7Si-0.3Mg alloys
- 2023Effect of Eu and P additions with Ta grain refiner on the solidification microstructure of Al-7Si-0.3Mg alloyscitations
- 2023Silicon Poisoning and Effects of Tantalum on AlSi Alloyscitations
- 2023A Comparison of Microstructure and Casting Defects of Rheocasting and Thixocasting Al-Si-Mg Alloy
- 2022Using Recycled Materials for Semi-Solid Processing of Al-Si-Mg Based Alloys
- 2022Effect of Solute Ta on Grain Refinement of Al-7Si-0.3Mg Based Alloyscitations
- 2022Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloyscitations
- 2021The nucleation sequence of α-Al on TiB2 particles in Al-Cu alloyscitations
- 2021Einfluss von Tantal auf die Kornfeinung einer Al10SiMg Legierung
- 2019Eutectic modification by ternary compound cluster formation in Al-Si alloyscitations
- 2019Precipitation microstructure in Al-Si-Mg-Mn alloy with Zr additionscitations
- 2017Phase Decomposition of a Single-Phase AlTiVNb High-Entropy Alloy after Severe Plastic Deformation and Annealingcitations
- 2017The enhanced theta-prime (θ′) precipitation in an Al-Cu alloy with trace Au additionscitations
- 2016Revealing heterogeneous nucleation of primary Si and eutectic Si by AlP in hypereutectic Al-Si alloyscitations
- 2014Influence of dendritic morphology on the calculation of macrosegregation in steel ingotcitations
Places of action
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article
Semi-analytical and experimental heat input study of additively manufactured Zr-based bulk metallic glass
Abstract
Laser powder bed fusion (LPBF) of Zr-based bulk metallic glasses (BMGs) has recently attracted attention due to its capacity for microstructure control, the potential for custom-tailored properties, and its versatile applicability across various industries. It is crucial to strike a balance between relative density, relaxation, and crystallinity tailored to a specific application when 3D printing amorphous components. However, prior findings have not revealed an exclusive study concerning low fractions of crystallinity (<5 vol%) and atomic-scale effects during the LPBF process, e.g. the relaxation degree of the amorphous structure. This study employs a systematic experimental approach, complemented by semi-analytical modeling, to comprehensively recognize the nano- and macro-scale amorphous structure and the associated mechanical behavior. Differential scanning calorimetry (DSC) along with flexural stress-strain measurements disclose that the highest relaxation and crystallization enthalpies, which are obtained for samples printed with lower heat input, are not in correlation with the desired mechanical properties. On the contrary, samples printed with a heat input of ΔH=44 reveal the maximum density range (up to 99.97 %) and showcase laboratory-XRD amorphous structure. This results in the highest flexural strength (up to 2080 MPa) and elastic deformation range (up to 2.6 %), along with the lowest Young's modulus span (60–70 GPa). In this case, the crystallinity (0.02–0.2 vol%) associated with the desired mechanical properties is calculated from the modeling results. The outcomes indicate increased heating/ cooling rates corresponding to the amplified heat input, with cooling rates reaching up to 5×104 °C/s and heating rates up to 6×105 °C/s. However, underlying layers are subjected to reduced heating and cooling rates. This observation not only validates the intricate thermal dynamics in LPBF but also elucidates the crystalline formation in heat-affected zones (HAZs) with associated lower heating and cooling rates.