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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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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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Zavdoveev, Anatoliy
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Thermal stability of electron beam welded AlCoCrFeNi2.1 alloy
- 2023CMT-based wire arc additive manufacturing of Inconel 625 alloycitations
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- 2022Microstructure and texture characterization in friction stir lap welded TIMETAL 21Scitations
- 2022Formation of a joint between deposited and base metals during laser cladding of a nickelbased powder onto a copper-based alloy
- 2022Optimization of the pulsed arc welding parameters for wire arc additive manufacturing in austenitic steel applicationscitations
- 2021Welding thermal cycle impact on the microstructure and mechanical properties of thermo-mechanical control process steelscitations
- 2021The influence of pulse current arc welding modes on changing the parameters of the weld and HAZ of welded joints made by low alloyed materials
- 2021Continuous Severe Plastic Deformation of Low‐Carbon Steel: Physical‐Mechanical Properties and Multi‐Scale Structure Analysiscitations
- 2021Effect of heat treatment on the mechanical properties and microstructure of HSLA steels processed by various technologiescitations
- 2020The influence of pulse current arc welding modes on changing the parameters of the weld and HAZ of welded joints made by low alloyed materials
- 2020Influence of pulsed-arc welding conditions on change of parameters of weld and haz of welded joints and mechanical properties of low-alloy steelscitations
- 2020Continuous Severe Plastic Deformation of Low‐Carbon Steel: Physical‐Mechanical Properties and Multi‐Scale Structure Analysiscitations
- 2020PC-GMAW effect on the welding thermal cycle and weld metal geometry for high strength steelscitations
- 2020Shear impact during steel wire drawing on grain boundaries and mechanical propertiescitations
- 2020Development of the PC-GMAW welding technology for TMCP steel in accordance with welding thermal cycle, welding technique, structure, and properties of welded jointscitations
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article
Thermal stability of electron beam welded AlCoCrFeNi2.1 alloy
Abstract
AlCoCrFeNi2.1 alloy, which belongs to the group of eutectic high-entropy alloys (EHEAs), possesses a combination of increased strength and ductility. It should retain these properties over a wide temperature range due to the high entropy effect of the system. At the same time, eutectic alloys are generally considered to have good castability, which increases the possibility of casting the alloy in larger volumes. One of the processes, that the alloy does not avoid when applied in industry, are the various joining techniques including electron beam welding. The weld area is often in a non-equilibrium state, which increases the risk of failure during operation. The paper therefore discusses the stability of the microstructure and mechanical properties of AlCoCrFeNi2.1 alloy when exposed to short-term elevated temperatures. The material heated at 900 degrees C for 1 h in a vacuum furnace was observed using light and electron microscopy, analyzed for chemical and phase composition and finally subjected to HV0.1 hardness measurement and tensile strength test. The resulting condition was compared with the welded joint before exposure to elevated temperature. The microstructure of the weld was formed by a fine lamellar eutectic over the entire observed area. EBSD analysis confirmed the presence of a combination of FCC and BCC phases. The material hardness reached an average value of 370 HV0.1. Maximum tensile strength of the weld joint was measured at 944 MPa with the corresponding displacement of the crosshead 6.1 mm. The welded joint demonstrated sufficient stability and the ability to withstand short-term severe elevated temperature conditions.