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UKAEA-CCFE-PR(22)492022
In the quest of new materials that can withstand severe irradiation and mechanical extremes for advanced applications (e.g. fission reactors, fusion devices, space applications, etc), design, prediction and control of advanced materials beyond current material designs become a paramount goal. Here, though a combined experimental and simula…
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UKAEA-CCFE-PR(22)412022
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UKAEA-CCFE-PR(22)322022
Vanadium base alloys represent potentially promising candidate structural materials for use in nuclear fusion reactors due to vanadium’s low activity, high thermal strength, and good swelling resistance. In this work, the mechanical properties of the current frontrunner vanadium base alloy, V-4Cr-4Ti, have been interrogated using in-situ high ene…
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UKAEA-CCFE-PR(25)3122021
The development of quantitative models for understanding physical properties of alloys requires a proper treatment of magnetic interactions, which is of paramount importance for the microstructural stability, especially in steels and high-entropy alloys containing magnetic elements. These magnetic interactions also control the defects behavior whic…
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UKAEA-CCFE-PR(23)922021
W-Cr-Y smart alloys are potential material candidates for plasma facing components due to their protective behaviour during the loss-of-coolant accident (LOCA), while maintaining beneficial properties of W during the normal operation of the fusion power plant. During plasma exposure the lighter alloying elements are preferentially sputtered at t…
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UKAEA-CCFE-PR(23)912021
Understanding how properties of materials change due to nuclear transmutations is a major challenge for the design of structural components for a fusion power plant. In this study, by combining a first-principles matrix Hamiltonian approach with thermodynamic integration we investigate quasisteady state configurations of multi-component alloys, …
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UKAEA-CCFE-PR(22)202021
In this work, the Universal Equation of States (UES) is revisited and generalised by including ferromagnetic and antiferromagnetic configurations. The energy of a system is calculated by means of three parameters, namely, the energy, volume and corresponding scaling volume (directly related to the bulk modulus) at the local ground state of the corr…
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UKAEA-CCFE-PR(21)702021
Multi-component alloys are emerging as promising metallic materials for cryogenic applications for their excellent combination of high ultimate tensile strength and good ductility. But their low yield strength can severely limit their applications. Lattice distortion is emerging as a feasible method in overcoming this dilemma. Here, we investigate …
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UKAEA-CCFE-PR(21)412021
Self-passivating Metal Alloys with Reduced Thermo-oxidation (SMART) are under development for the primary application as plasma-facing materials of the first wall in a fusion DEMOnstration power plant (DEMO). SMART materials must combine the suppressed oxidation in case of an accident and an acceptable plasma performance during the regular operatio…
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UKAEA-CCFE-PR(20)1062020
The development of High-Entropy Alloys (HEAs) focuses on exploring compositional regions in multicomponent systems with all alloy elements in equal or near-equal atomic concentrations. Initially it was based on the main idea that high mixing configurational entropy contributions to the alloy free energy could promote the formation of a single so…
Showing 11 - 20 of 37 UKAEA Paper Results