167 citations · 203 across the 15 of their papers we have counts for
17 papers
A hidden low-temperature transformation pathway in compositionally complex materials
Yujiao Li, Elaheh Akbarnejad, Quentin Bizot +9
Most compositionally complex materials (CCMs, frequently referred to as high entropy alloys) are metastable and their attractive properties often belong to kinetically trapped stat…
Microstructural origin of the simultaneous enhancements in strength and ductility of a nitrogen-doped high-entropy alloy
Xiaoxiang Wu, Zhujun Sun, Wenqi Guo +9
As one of the most abundant interstitial elements, nitrogen (N) is effective in improving yield strength of metallic materials, due to interstitial solid solution strengthening. Do…
Controlling Metastability through Annealing of High-Entropy Nanoalloy Electrocatalysts to Boost Performance towards the Oxygen Evolution Reaction
Varatharaja Nallathambi, Aneeta Jose Puthussery, Andrea M. Mingers +7
Low-cost transition metal high-entropy nanoalloys are emerging as sustainable alternatives to platinum group electrocatalysts. Synthesis conditions of single-phase solid solutions…
Is Platinum a Proton Blocking Catalyst?
Aparna Saksena, Yujun Zhao, J. Manoj Prabhakar +3
Platinum, to date, is the most widely applied electrocatalyst for hydrogen evolution reaction (HER) in acidic media. It is assumed to be a proton-blocking catalyst with only surfac…
Protection of metal interfaces against hydrogen-assisted cracking
Guillaume Hachet, Shaolou Wei, Ali Tehranchi +8
Enabling a hydrogen economy requires the development of materials resistant to hydrogen embrittlement (HE). More than 100 years of research have led to several mechanisms and model…
Direct observation of nanoscale pinning centers in Ce(Co0.8Cu0.2)5.4 permanent magnets
Nikita Polin, Shangbin Shen, Fernando Maccari +15
Permanent magnets containing rare earth elements are essential components for the electrification of society. Ce(Co1-xCux)5 permanent magnets are a model system known for their sub…
Unraveling the thermodynamics and mechanism behind the lowering of reduction temperatures in oxide mixtures
Shiv Shankar, Barak Ratzker, Alisson Kwiatkowski da Silva +5
Hydrogen-based direct reduction offers a sustainable pathway to decarbonize the metal production industry. However, stable metal oxides, like CrO, are notoriously difficult…
Temperature and misorientation-dependent austenite nucleation at ferrite grain boundaries in a medium manganese steel: role of misorientation-dependent grain boundary segregation
Rama Srinivas Varanasi, Osamu Waseda, Faisal Waqar Syed +4
In the current work, we study the role of grain boundary (GB) misorientation-dependent segregation on austenite nucleation in a 50% cold rolled intercritically annealed 10Mn-0.05C-…
Effect of Ag nano-additivation on microstructure formation in Nd-Fe-B magnets built by laser powder bed fusion
Varatharaja Nallathambi, Philipp Gabriel, Xinren Chen +6
Laser powder bed fusion (PBF-LB/M) enables the near-net shape production of permanent magnets with complex geometry while reducing material waste. However, controlling the microstr…
Secondary Grain Boundary Dislocations Alter Segregation Energy Spectra
Xinren Chen, William Gonçalves, Yi Hu +9
Grain boundaries (GBs) trigger structure-specific chemical segregation of solute atoms. According to the three-dimensional (3D) topology of grains, GBs - although defined as planar…
Segregation at prior austenite grain boundaries: the competition between boron and hydrogen
Guillaume Hachet, Ali Tehranchi, Hao Shi +8
The interaction between boron and hydrogen at grain boundaries has been investigated experimentally and numerically in boron-doped and boron-free martensitic steels using thermal d…
Towards establishing best practice in the analysis of hydrogen and deuterium by atom probe tomography
Baptiste Gault, Aparna Saksena, Xavier Sauvage +42
As hydrogen is touted as a key player in the decarbonization of modern society, it is critical to enable quantitative H analysis at high spatial resolution, if possible at the atom…
3D deep learning for enhanced atom probe tomography analysis of nanoscale microstructures
Jiwei Yu, Zhangwei Wang, Aparna Saksena +8
Quantitative analysis of microstructural features on the nanoscale, including precipitates, local chemical orderings (LCOs) or structural defects (e.g. stacking faults) plays a piv…
Roadmap on Data-Centric Materials Science
Stefan Bauer, Peter Benner, Tristan Bereau +58
Science is and always has been based on data, but the terms "data-centric" and the "4th paradigm of" materials research indicate a radical change in how information is retrieved, h…
On the role of Grain Boundary Character in the Stress Corrosion Cracking of Nanoporous Gold Thin Films
Aparna Saksena, Ayman El-Zoka, Alaukik Saxena +3
For its potential as a catalyst, nanoporous gold (NPG) prepared through dealloying of bulk Ag-Au alloys has been extensively investigated. NPG thin films can offer ease of handling…
Microstructure of a spark-plasma-sintered Fe2VAl-type Heusler alloy for thermoelectric application
Leonie Gomell, Imants Dirba, Hanna Bishara +8
The influence of microstructure on thermoelectricity is increasingly recognized. Approaches for microstructural engineering can hence be exploited to enhance thermoelectric perform…
Sustainable steel through hydrogen plasma reduction of iron ore: process, kinetics, microstructure, chemistry
I. R. Souza Filho, Y. Ma, M. Kulse +4
Fe- and steelmaking is the largest single industrial CO2 emitter, accounting for 6.5% of all CO2 emissions on the planet. This fact challenges the current technologies to achieve c…