106 citations · 204 across the 18 of their papers we have counts for
18 papers
Observing the crack tip behaviour at the nanoscale during fracture of ceramics
Oriol Gavalda-Diaz, Max Emmanuel, Katharina Marquardt +2
Ultimately, brittle fracture involves breaking atomic bonds. However, we still lack a clear picture of what happens in the highly deformed region around a moving crack tip. Consequ…
Determining the Fundamental Failure Modes in Ni-rich Lithium Ion Battery Cathodes
Siyang Wang, Zonghao Shen, Aigerim Omirkhan +3
Challenges associated with in-service mechanical degradation of Li-ion battery cathodes has prompted a transition from polycrystalline to single crystal cathode materials. Whilst f…
Shear and delamination behaviour of basal planes in Zr3AlC2 MAX phase studied by micromechanical testing
Siyang Wang, Oriol Gavalda-Diaz, Jack Lyons +1
The mechanical properties of layered, hexagonal-structured MAX phases often show the combined merits of metals and ceramics, making them promising material candidates for safety cr…
Characterisation of the strain rate sensitivity of basal, prismatic and pyramidal slip in Zircaloy-4 using micropillar compression
Ning Fang, Yang Liu, Finn Giuliani +1
The slip strength of individual slip systems at different strain rates will control the mechanical response and strongly influence the anisotropy of plastic deformation. In this wo…
Fracture properties of La(Fe,Mn,Si)13 magnetocaloric materials
Siyang Wang, Paul Burdett, Edmund Lovell +4
La(Fe,Mn,Si)13 alloys are a promising material family for magnetic refrigeration. Challenges associated with their structural integrity during device assembly and operation require…
In-situ sputtering from the micromanipulator to enable cryogenic preparation of specimens for atom probe tomography by focused-ion beam
James O. Douglas, Michele Conroy, Finn Giuliani +1
Workflows have been developed in the past decade to enable atom probe tomography analysis at cryogenic temperatures. The inability to control the local deposition of the metallic p…
Multi-scale plasticity homogenization of Sn-3Ag-0.5Cu: from β-Sn micropillars to polycrystals with intermetallics
Yilun Xu, Tianhong Gu, Jingwei Xian +4
The mechanical properties of -Sn single crystals have been systematically investigated using a combined methodology of micropillar tests and rate-dependent crystal plasticity mo…
Understanding the degradation of a model Si-anode in Li-ion battery at the atomic-scale
Se-Ho Kim, Kang Dong, Huan Zhao +7
Si-anodes have long been candidates thanks to an expected ten-fold increase in capacity compared to graphite. However, details of the mechanisms governing their degradation remain…
The effect of hydrogen on the multiscale mechanical behaviour of a La(Fe,Mn,Si)13-based magnetocaloric material
Siyang Wang, Oriol Gavalda-Diaz, Ting Luo +6
Magnetocaloric cooling offers the potential to improve the efficiency of refrigeration devices and hence cut the significant CO2 emissions associated with cooling processes. A crit…
Environment-assisted crack nucleation in La(Fe,Mn,Si)13-based magnetocaloric materials
Siyang Wang, Edmund Lovell, Liya Guo +3
Cracking in La(Fe,Si)13-based magnetocaloric materials has been observed to predominantly form around La-rich (La2O3) particles and pose a threat to their long-term structural inte…
Accessing slip activity in high purity tin with electron backscatter diffraction and measurement of slip strength
Tianhong Gu, Finn Giuliani, T. Ben Britton
Beta-tin has been used widely as an interconnect in modern electronics. To improve the understanding of the reliability of these components, we directly measure the critical resolv…
Slip-hydride interactions in Zircaloy-4: Multiscale mechanical testing and characterisation
Siyang Wang, Finn Giuliani, T. Ben Britton
The interactions between δ-hydrides and plastic slip in a commercial zirconium alloy, Zircaloy-4, under stress were studied using in situ secondary electron microscope (SEM) microp…
The effect of δ-hydride on the micromechanical deformation of Zircaloy-4 studied by in situ high angular resolution electron backscatter diffraction
Siyang Wang, Szilvia Kalácska, Xavier Maeder +3
Zircaloy-4 is used extensively as nuclear fuel cladding materials and hydride embrittlement is a major failure mechanism. To explore the effect of δ-hydride on plastic deformation…
The role of β-titanium ligaments in the deformation of dual phase titanium alloys
Tea-Sung Jun, Xavier Maeder, Ayan Bhowmik +4
Multiphase titanium alloys are critical materials in high value engineering components, for instance in aero engines. Microstructural complexity is exploited through interface engi…
Microstructure and formation mechanisms of δ-hydrides in variable grain size Zircaloy-4 studied by electron backscatter diffraction
Siyang Wang, Finn Giuliani, T. Ben Britton
Microstructure and crystallography of δ phase hydrides in as-received fine grain and 'blocky' alpha large grain Zircaloy-4 (average grain size ~11 μm and >200 μm, respectively) wer…
Nanoindentation of Porous Bulk and Thin Films of LSCF
Zhangwei Chen, Xin Wang, Vinnet Bhakhri +2
In this paper we show how reliable measurements on porous ceramic films can be made by appropriate nanoindentation experiments and analysis. Room-temperature mechanical properties…
Surface quality improvement of porous thin films suitable for nanoindentation
Zhangwei Chen, Xin Wang, Finn Giuliani +1
The reliability of perovskite material LSCF to be used as cathode parts in solid oxide fuel cells also relies on its mechanical properties. Adequate surface conditions are desired…
Analyses of microstructural and elastic properties of porous SOFC cathodes based on focused ion beam tomography
Zhangwei Chen, Xin Wang, Finn Giuliani +1
Mechanical properties of porous SOFC electrodes are largely determined by their microstructures. Measurements of the elastic properties and microstructural parameters can be achiev…