Showing 1 - 6 of 6 Journals Results
2020
UKAEA-CCFE-PR(20)106
Damian Sobieraj Jan S. Wróbel Tomasz Rygier Krzysztof J. Kurzydłowski Osman El Atwani Arun Devaraj Enrique Martinez Saez Duc Nguyen-Manh
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…
Preprint Purchase2020
UKAEA-CCFE-PR(20)79
Jan S. Wrobel Marcin R. Zemla Duc Nguyen-Manh Par Olsson Luca Messina Christophe Domain Tomasz Wejrzanowski Sergei L. Dudarev
Point defects in body-centred cubic Fe, Cr and concentrated random magnetic Fe-Cr are investigated using density functional theory and theory of elasticity. The volume of a substitutional Cr atom in ferromagnetic bcc Fe is approximately 18% larger than the volume of a host Fe atom, whereas the volume of a substitutional Fe atom in antiferromagnetic…
Preprint2020
UKAEA-CCFE-PR(20)78
Andrey Litnovsky Janina Schmitza Felix Klein Karen De Lannoyea Sophie Weckauf Arkadi Kreter Marcin Rasinski Jan W. Coenen Christian Linsmeier Jesus Gonzalez-Julian Martin Bram Ivan Povstugar Thomas Morgan Duc Nguyen-Manh Mark Gilbert Damjan Sobieraj Jan S. Wróbel
During an accident with loss-of-coolant and air ingress in DEMO, the temperature of tungsten first wall cladding may exceed 1000oC and remain for months leading to tungsten oxidation. The radioactive tungsten oxide can be mobilized to the environment at rates of 10 – 150 kg per hour. Smart tungsten-based alloys are under develop…
Preprint Purchase2019
UKAEA-CCFE-PR(19)38
Mark Fedorov Jan S. Wrobel Antonio Fernandez-Caballero Krzysztof J. Kurzydlowski Duc Nguyen-Manh
Multi-component alloy Fe-Cr-Mn-Ni is a promising new candidate system not only because of its potential application as structural materials beyond conventional austenitic steels but also for fundamental physics role played by Mn element in Fe-Cr-Ni based alloys. In this work, the phase stability of magnetic face-centered cubic (fcc) Fe-Cr-Mn-Ni sys…
Preprint Published2017
CCFE-PR(17)55
I. Toda-Caraballo Jan S. Wróbel Duc Nguyen-Manh Pablo Pérez P. E. J. Rivera-Díaz-del-Castillo
High Entropy Alloys (HEAs) is a fascinating field of research, with an increasing number of new alloys discovered. This would hardly be conceivable without the aid of materials modeling and the computational alloy design to investigate the immense compositional space. The simplicity of the microstructure achieved contrasts with the enormous complex…
Preprint Purchase2001