Arun Devaraj
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View article: Graphene‐infused copper: A flash‐induced far‐from‐equilibrium phase transformation
Graphene‐infused copper: A flash‐induced far‐from‐equilibrium phase transformation Open
The flash phenomenon, first discovered in the context of sintering, has grown broadly into many areas of science and technology. It enables the synthesis of materials that are far from equilibrium. Flash is characterized by massive generat…
View article: Interlocking Interfaces with Nanostructured Intermetallics Enable Enhanced Performance in Aluminum-Copper Hybrid Rotors for Next-Generation Electric Motors
Interlocking Interfaces with Nanostructured Intermetallics Enable Enhanced Performance in Aluminum-Copper Hybrid Rotors for Next-Generation Electric Motors Open
Electric drives and other vehicle motors have renewed interest in aluminum-copper (Al-Cu) hybrid rotors, which combine aluminum’s low weight with copper’s superior conductivity. Die-casting of Al-Cu rotors, however, suffers from the format…
View article: Evaluating the bond strength and fracture mechanisms of cold-sprayed zinc coating on AZ91 magnesium substrate via a combined experimental and computational approach
Evaluating the bond strength and fracture mechanisms of cold-sprayed zinc coating on AZ91 magnesium substrate via a combined experimental and computational approach Open
Magnesium (Mg) alloys are ideal candidates for automotive applications due to their high strength to weight ratio, castability, recyclability etc., however, they lack corrosion and oxidation resistance. Solid-state deposition techniques, s…
View article: Non-linear solar EUV-driven sodium release from the lunar surface: a contrast to the linear PSD model
Non-linear solar EUV-driven sodium release from the lunar surface: a contrast to the linear PSD model Open
The correlation between solar Extreme Ultra-Violet (EUV) radiation above 8.8 eV and the release of sodium from the lunar surface via photon-stimulated desorption (PSD) is investigated. We use simultaneous measurements of EUV photon flux an…
View article: Controlled electrochemical nutrient delivery to enhance marine primary productivity
Controlled electrochemical nutrient delivery to enhance marine primary productivity Open
Oceanic photosynthesis contributes to approximately half of the Earth’s net annual primary productivity. Marine photosynthetic productivity has a high degree of heterogeneity due to spatial and temporal co-limitations of light, temperature…
View article: Insights from quasi-in situ cryogenic-transfer atom probe tomography for analyzing hydrogen diffusion in metallic alloys
Insights from quasi-in situ cryogenic-transfer atom probe tomography for analyzing hydrogen diffusion in metallic alloys Open
Understanding hydrogen embrittlement mechanisms requires insights into nanoscale hydrogen isotope segregation in materials. Cryogenic-transfer atom probe tomography (APT) can provide this insight, if the sample exposure is precisely contro…
View article: Structure evolution and tin redistribution during oxidation of Zircaloy-4 at 500°C
Structure evolution and tin redistribution during oxidation of Zircaloy-4 at 500°C Open
View article: Tailoring Mechanical Properties of a Multi-Principle-Element Alloy by a Multi-Length-Scale Approach
Tailoring Mechanical Properties of a Multi-Principle-Element Alloy by a Multi-Length-Scale Approach Open
A multiscale strengthening approach was employed to tailor the mechanical properties of a NiCoCr-based multi-principal element alloy (MPEA). Initially, the addition of Mo was utilized to strengthen the alloys by achieving grain size refine…
View article: Comprehending interface shearing behavior within a bulk Cu-Nb alloy using micromechanical testing
Comprehending interface shearing behavior within a bulk Cu-Nb alloy using micromechanical testing Open
View article: Correction: Materials laboratories of the future for alloys, amorphous, and composite materials
Correction: Materials laboratories of the future for alloys, amorphous, and composite materials Open
View article: Materials laboratories of the future for alloys, amorphous, and composite materials
Materials laboratories of the future for alloys, amorphous, and composite materials Open
In alignment with the Materials Genome Initiative and as the product of a workshop sponsored by the US National Science Foundation, we define a vision for materials laboratories of the future in alloys, amorphous materials, and composite m…
View article: Insights from Quasi-in situ Cryogenic-Transfer Atom Probe Tomography for Analyzing Hydrogen Diffusion in Metallic Alloys
Insights from Quasi-in situ Cryogenic-Transfer Atom Probe Tomography for Analyzing Hydrogen Diffusion in Metallic Alloys Open
Cryogenic-transfer atom probe tomography (APT) has emerged as a powerful technique for nanoscale compositional analysis of hydrogen segregation in materials, offering critical insights into hydrogen embrittlement mechanisms. However, accur…
View article: The Impact of Nickel Concentration and Stacking Fault Energy on Deformation Mechanisms in High-Purity Austenitic Fe-Cr-Ni Alloys
The Impact of Nickel Concentration and Stacking Fault Energy on Deformation Mechanisms in High-Purity Austenitic Fe-Cr-Ni Alloys Open
View article: Neutron radiation induced transmutation of boron to lithium in aluminum-boron nitride composite
Neutron radiation induced transmutation of boron to lithium in aluminum-boron nitride composite Open
View article: Stratification of fluoride uptake among enamel crystals with age elucidated by atom probe tomography
Stratification of fluoride uptake among enamel crystals with age elucidated by atom probe tomography Open
View article: Upcycled high-strength aluminum alloys from scrap through solid-phase alloying
Upcycled high-strength aluminum alloys from scrap through solid-phase alloying Open
Although recycling secondary aluminum can lead to energy consumption reduction compared to primary aluminum manufacturing, products produced by traditional melt-based recycling processes are inherently limited in terms of alloy composition…
View article: Understanding the mechanism for the low-temperature reduction of Fe2O3 to Fe in alkaline electrolytes
Understanding the mechanism for the low-temperature reduction of Fe2O3 to Fe in alkaline electrolytes Open
Conversion reactions for iron oxide to iron metal enable zero-emissions iron for steelmaking and low-cost batteries for long duration energy storage. Iron oxides such as hematite can be electrochemically reduced to metallic iron in concent…
View article: Tribological behavior of hybrid Aluminum-TiB2 metal matrix composites for brake rotor applications
Tribological behavior of hybrid Aluminum-TiB2 metal matrix composites for brake rotor applications Open
View article: Quantifying the atomic neighbourhoods in complex concentrated alloys
Quantifying the atomic neighbourhoods in complex concentrated alloys Open
View article: Mechanistic understanding of speciated oxide growth in high entropy alloys
Mechanistic understanding of speciated oxide growth in high entropy alloys Open
Complex multi-element alloys are gaining prominence for structural applications, supplementing steels, and superalloys. Understanding the impact of each element on alloy surfaces due to oxidation is vital in maintaining material integrity.…
View article: Tensile creep behavior of the Nb45Ta25Ti15Hf15 refractory high entropy alloy
Tensile creep behavior of the Nb45Ta25Ti15Hf15 refractory high entropy alloy Open
View article: Kink bands promote exceptional fracture resistance in a NbTaTiHf refractory medium-entropy alloy
Kink bands promote exceptional fracture resistance in a NbTaTiHf refractory medium-entropy alloy Open
Single-phase body-centered cubic (bcc) refractory medium- or high-entropy alloys can retain compressive strength at elevated temperatures but suffer from extremely low tensile ductility and fracture toughness. We examined the strength and …
View article: Upcycled High-Strength Aluminum Alloys from Scrap through Solid-Phase Alloying
Upcycled High-Strength Aluminum Alloys from Scrap through Solid-Phase Alloying Open
Although recycling secondary aluminum can lead to energy consumption reduction compared to primary aluminum manufacturing, products produced by traditional melt-based recycling processes are inherently limited in terms of alloy composition…
View article: Lattice Parameter Evolution during the β-to-α and β-to-ω Transformations of Iron- and Aluminum-Modified Ti-11Cr(at.%)
Lattice Parameter Evolution during the β-to-α and β-to-ω Transformations of Iron- and Aluminum-Modified Ti-11Cr(at.%) Open
β-titanium (β-Ti) alloys are useful in diverse industries because their mechanical properties can be tuned by transforming the metastable β phase into other metastable and stable phases. Relationships between lattice parameter and β-Ti all…
View article: pnnl/APTVIZ
pnnl/APTVIZ Open
APT Clustering Visualizer
View article: Comprehending Interphase Shearing Behavior within a Bulk Cu-Nb Alloy Using Micromechanical Testing
Comprehending Interphase Shearing Behavior within a Bulk Cu-Nb Alloy Using Micromechanical Testing Open
View article: Detection of tritium using ultrafast laser-induced breakdown spectroscopy
Detection of tritium using ultrafast laser-induced breakdown spectroscopy Open
Detection of protium, deuterium and tritium using ultrafast LIBS with rapid, and standoff capability in addition to no sample preparation requirement which are crucial to nuclear nonproliferation, safeguards, and security
View article: Interplay of Stacking Fault Energy and Compositional Short-Range Ordering on the Deformation Mechanisms of Model Fe-Cr-Ni Alloys
Interplay of Stacking Fault Energy and Compositional Short-Range Ordering on the Deformation Mechanisms of Model Fe-Cr-Ni Alloys Open
View article: Mechanistic Understanding of Speciated Oxide Growth in High Entropy Alloys
Mechanistic Understanding of Speciated Oxide Growth in High Entropy Alloys Open
Complex multi-element alloys are gaining prominence for structural applications, supplementing steels, and superalloys. Understanding the impact of each element on alloy surfaces due to oxidation is vital in maintaining material integrity.…
View article: Mechanisms for high creep resistance in alumina forming austenitic (AFA) alloys
Mechanisms for high creep resistance in alumina forming austenitic (AFA) alloys Open