170 citations · 538 across the 17 of their papers we have counts for
17 papers
Evolution of Irradiation-Induced Defect Landscape through Edge Dislocation and Vacancy Loop Interactions in Tungsten
Soumya Mishra, Suchandrima Das
Structural materials in fusion reactors develop irradiation-induced defect populations that govern their mechanical behaviour. While advanced microscopy provides detailed character…
Decoupling Strain-Rate Sensitivity and Deformation Length Scale Effects in Neutron-Irradiated Tungsten: A Coupled Nano-Indentation, HR-EBSD and Crystal Plasticity Study
Prashil S. Joshi, Bethany Jim, Chris Hardie +3
Plastic deformation during strain-rate-controlled spherical nanoindentation is governed by the coupled evolution of constitutive strain-rate sensitivity and deformation length scal…
Characterisation of Irradiation Damage in Fe3Cr and Fe5Cr: A Study on the Effects of Chromium Content and Temperature
Chandra Bhusan Yadav, Andrew J. London, Tonci Tadic +4
Fe-Cr binary alloys serve as simplified model systems to study irradiation damage relevant to fusion structural materials. Here, Fe-3%Cr and Fe-5%Cr samples were irradiated with 4…
Deformation Localisation in Ion-Irradiated FeCr
Kay Song, Dina Sheyfer, Wenjun Liu +6
Irradiation-induced ductility loss is a major concern facing structural steels in next-generation nuclear reactors. Currently, the mechanisms for this are unclear but crucial to ad…
Dislocation Pinning in Helium-Implanted Tungsten: A Molecular Dynamics Study
Suchandrima Das, Andrea Sand, Felix Hofmann
The interaction of edge dislocation with helium-implantation-induced defects in tungsten is investigated using molecular dynamics. Following prior investigations, we consider defec…
Orientation dependence of the nano-indentation behaviour of pure tungsten
Hongbing Yu, Suchandrima Das, Haiyang Yu +3
Coupling of nano-indentation and crystal plasticity finite element (CPFE) simulations is widely used to quantitatively probe the small-scale mechanical behaviour of materials. Earl…
Observation of transient and asymptotic driven structural states of tungsten exposed to irradiation
Daniel R. Mason, Suchandrima Das, Peter M. Derlet +8
Combining spatially resolved X-ray Laue diffraction with atomic-scale simulations, we observe how ion-irradiated tungsten undergoes a series of non-linear structural transformation…
Nanoscale lattice strains in self-ion implanted tungsten
N. W. Phillips, H. Yu, S. Das +6
Developing a comprehensive understanding of the modification of material properties by neutron irradiation is important for the design of future fission and fusion power reactors.…
Characterising Ion-Irradiated FeCr: Hardness, Thermal Diffusivity and Lattice Strain
Kay Song, Suchandrima Das, Abdallah Reza +6
Ion-irradiated FeCr alloys are useful for understanding and predicting neutron-damage in the structural steels of future nuclear reactors. Previous studies have largely focused on…
Non-destructive study of collision cascade damage in self-ion irradiated tungsten using HR-EBSD and ECCI
Hongbing Yu, Phani Karamched, Suchandrima Das +3
Understanding defect production and evolution under irradiation is a long-standing multi-scale problem. Conventionally, experimental examination of irradiation-induced defects (IID…
Modified deformation behaviour of self-ion irradiated tungsten: A combined nano-indentation, HR-EBSD and crystal plasticity study
Suchandrima Das, Hongbing Yu, Kenichiro Mizohata +2
Predicting the dramatic changes in material properties caused by irradiation damage is key for the design of future nuclear fission and fusion reactors. Self-ion implantation is an…
Surface terraces in pure tungsten formed by high-temperature oxidation
Hongbing Yu, Suchandrima Das, Junliang Liu +2
We observe large-scale surface terraces in tungsten oxidised at high temperature and in high vacuum. Their formation is highly dependent on crystal orientation, with only {111} gra…
Orientation-dependent indentation response of helium-implanted tungsten
Suchandrima Das, Hongbing Yu, Edmund Tarleton +1
A literature review of studies investigating the topography of nano-indents in ion-implanted materials reveals seemingly inconsistent observations, with report of both pile-up and…
Nano-scale imaging of the full strain tensor of specific dislocations extracted from a bulk sample
Felix Hofmann, Nicholas W. Phillips, Suchandrima Das +5
Lattice defects play a key role in determining the properties of crystalline materials. Probing the 3D lattice strains that govern their interactions remains a challenge. Bragg Coh…
Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten
Suchandrima Das, Hongbing Yu, Edmund Tarleton +1
Tungsten is the main candidate material for plasma-facing armour components in future fusion reactors. In-service, fusion neutron irradiation creates lattice defects through collis…
Helium-Implantation-Induced Lattice Strains and Defects in Tungsten probed by X-ray Micro-diffraction
Suchandrima Das, Ruqing Xu, Wenjun Liu +1
Tungsten is the main candidate material for plasma-facing armour components in future fusion reactors. Bombardment with energetic fusion neutrons causes collision cascade damage an…
Consistent determination of geometrically necessary dislocation density from simulations and experiments
Suchandrima Das, Felix Hofmann, Edmund Tarleton
The use of Nye's dislocation tensor for calculating the density of geometrically necessary dislocations (GND) is widely adopted in the study of plastically deformed materials. The…