Articles tagged with Alloys
Researchers will investigate high-entropy materials to create more sustainable and durable catalysts. The goal is to improve the efficiency of electrocatalysis, paving the way for a new generation of catalysts and reducing the reliance on rare and expensive materials.
A team of researchers from City University of Hong Kong and Shanghai Jiao Tong University has developed a novel aluminium alloy with unprecedented fatigue resistance using advanced 3D printing techniques. The new alloy, called NTD-Al, surpasses the fatigue strength of high-strength wrought Al alloys and conventional metals.
Recent progress in metallic powders characterization, preparation, and reuse for laser powder bed fusion (L-PBF) enhances printing consistency and reduces costs. Novel cost-effective methods like fluidized bed and cold mechanically derived method are emerging to prepare powders.
The Army Research Laboratory has chosen Texas A&M University for its High-Throughput Materials Discovery for Extreme Environments Center (HTMDEC). The center aims to develop novel materials for extreme conditions, reducing experimentation costs and duration. By leveraging machine learning, physics-based simulations, and collaboration, ...
A new refractory high-entropy alloy (RHEA) has been designed with nitride phases, exhibiting exceptional compressive yield strengths up to 288 MPa at temperatures between 1000 and 1800 °C. This record-breaking strength surpasses that of most known alloys, including superalloys and refractory metals.
Researchers at the University of Illinois have identified a novel pathway to stabilize nanoscale precipitates in alloys through nonequilibrium processes. By stopping precipitate coarsening, they can create stable nanostructures with improved mechanical properties.
Researchers at Vienna University of Technology have discovered a new metallic alloy of nickel and gold that exhibits exceptional thermoelectric properties, enabling high electrical power generation. The alloy outperforms conventional semiconductors in terms of power density and thermoelectric efficiency.
A microscopic crack in platinum grew and then 'healed' itself by getting shorter after repetitive stretching, confirming Dr. Michael Demkowicz's 2013 prediction. The experiment used nanocrystalline metals with a small grain size, which allows for microstructural features to interact with cracks.
Researchers have identified a novel pathway to stabilize nanoscale precipitates in alloys by utilizing nonequilibrium processes, stopping coarsening and resulting in stable nanostructures. This approach has potential applications in materials used for nuclear applications, batteries, and other industries.
Researchers developed a unique approach to predict metal ductility using quantum mechanics, filling the need for an inexpensive and efficient method. The new approach was tested on refractory multi-principal-element alloys and showed robust results, confirming its effectiveness in distinguishing between ductile and brittle materials.
Scientists at Max-Planck-Institut für Eisenforschung developed a machine learning model that enhances predictive accuracy in alloy design, uncovering new corrosion-resistant compositions. The model combines numerical and textual data, enabling the identification of optimal alloy formulas.
A team from Chiba University created an AuNi alloy on Au electrodes, showing increased hydrogen evolution reaction activity due to surface defects formed through Ni dealloying. The study used X-ray photoelectron spectroscopy and surface X-ray diffraction techniques to analyze the surface properties of the AuNi/Au catalyst.
A team of researchers led by ORNL's Alex Plotkowski developed a novel high-performance alloy, 3Cr-XHTS steel, which can withstand extreme temperatures and stresses. The new alloy demonstrated significant improvements in fatigue strength and oxidation resistance compared to existing materials.
A collaborative research team created an experimental platform to control the atomic-level structure of high-entropy alloy surfaces and test their catalytic properties. Their study found that the surfaces performed better in oxygen reduction reactions compared to other materials, indicating a 'pseudo-core-shell-like structure' contribu...
Researchers at North Carolina State University have developed a new robot called RoboMapper that can conduct experiments more efficiently and sustainably to develop new semiconductor materials. The robot automates the process of testing multiple samples simultaneously, reducing time and energy consumption by nearly 10 times.
The research team produced a new strong, ductile, and sustainable titanium alloy through additive manufacturing, exhibiting better mechanical performance than traditional methods. This innovation addresses waste management issues in titanium alloy production, enabling recycling of off-grade sponge titanium.
Researchers discovered that nickel-cobalt alloy nanocrystals inhibit the activation of three inflammasomes, including NLRP3, NLRC4, and AIM2, in primary macrophages. The study found that these nanocrystals effectively treated colitis and acute peritonitis by reducing disease symptoms.
Scientists at Chalmers University of Technology have created a new method for removing mercury from concentrated sulphuric acid, reducing levels by more than 90%. This innovation could lead to reduced mercury emissions and the production of high-purity, non-toxic products in industries such as mining and metal refining.
Japanese researchers develop improved ternary superconductor bulks from liquid sources, demonstrating enhanced performance and microstructural analysis shows significant reductions in secondary phase particle size. The findings have huge potential for applications in magnetic levitation, electric motors, and energy systems.
Researchers have developed strong and ductile titanium alloys by integrating alloy and 3D-printing process designs, enabling new sustainable applications in aerospace, biomedical, and energy technologies. The breakthrough utilizes circular economy thinking to produce alloys from industrial waste and low-grade materials.
Researchers at Tokyo University of Science have discovered a novel gold-gallium-dysprosium quasicrystal that exhibits ferromagnetic properties, tunability and high phase purity. The discovery opens up new frontiers in magnetic materials science, with potential applications in spintronics and magnetic data storage.
A team of scientists created a mathematical model that accurately describes microstructures by integrating data from highly magnified images taken during experiments. The findings provide insight into how microstructures change at high temperatures and have implications for the development of new materials.
Scientists at Tokyo University of Science created a fracture-resistant alloy through heat-treatment, exhibiting improved elastocaloric properties and resistance to cyclical loads. The Cu-Zn-Al alloy showed significant increases in grain size, leading to enhanced cooling capabilities and paving the way for innovative refrigeration systems.
Max Planck scientists explore the possibilities of artificial intelligence in materials science, discussing how combining physics-based modeling with AI can unlock complex material designs. The research focuses on overcoming limitations of traditional methods and handling sparse, noisy data.
High-entropy metal telluride superconductors exhibit unique properties due to structural disorder and atomic vibrations. The discovery sheds light on the coupling between electrons and lattice vibrations, potentially leading to exotic superconductivity mechanisms.
Ali Beheshti conducts a tribological study of IN625 and Ni-Cu alloys subjected to laser peening, aiming to enhance mechanical strength and resistance to fatigue, corrosion, and wear. The project will provide crucial insights for the Navy fleet operating in harsh environments.
Scientists from Tokyo Metropolitan University have developed a new electrode material for deep-ultraviolet light-emitting diode applications, combining excellent electrical conductivity with unprecedented transparency. The new electrodes promise to impact industry by enabling more efficient and compact light sources for sterilization p...
Scientists at Ruhr-University Bochum develop a technique to create complete five-element material systems on a carrier roughly the size of a human hair. This enables them to efficiently search for new catalysts with high catalytic activity, crucial for environmentally friendly energy conversion processes.
Researchers used auto-encoder technique to analyze 150 XRD patterns of magnetic alloys, identifying clusters and fine-tuning alloys by detecting relevant peaks. The approach enables accelerated development of high-efficiency materials with low environmental impact.
Researchers have developed a nano-scale platinum-cobalt alloy to reduce the need for rare and expensive platinum in hydrogen fuel cells, enhancing performance and stability. The new alloy achieves superior results at lower costs, paving the way for wider adoption of fuel-cell technology.
Researchers from City University of Hong Kong developed a new ultra-stable hydrogen evolution reaction electrocatalyst based on two-dimensional mineral gel nanosheets. The catalyst exhibits excellent electrocatalytic activity and long-term durability, with an overpotential of only 38.5 mV at 10 mA cm−2.
A Japanese research team successfully constructed the first polymeric Weaire-Phelan structure, a previously theoretical form predicted to be the most efficient solution for a century-old tessellation problem. The structure was achieved through a novel polymerization-induced phase separation method.
A team of researchers from Korea investigated the dynamics of the p-Laplacian AC equation, finding that solutions maintain three criteria: phase separation, boundedness, and energy decay properties. They also identified an advantage of p-AC equation over classical Laplacian in adjusting interface sharpness.
The study investigates the degradation of carbon fiber-reinforced ultra-high-temperature ceramic matrix composites at temperatures above 2000°C. The results show that the amount of zirconium in the alloy affects the composite's oxidation resistance, and modifying the matrix composition is necessary to prevent degradation.
Researchers at City University of Hong Kong found that tailoring cobalt concentration in high entropy alloys prevents nanoparticles from coarsening at high temperatures. This strategy opens a pathway for designing novel thermally stable chemically complex alloys for various engineering fields.
A new MIT-developed heat treatment transforms 3D-printed metal microstructure, enabling energy-efficient 3D printing of blades for gas turbines and jet engines. Researchers discovered a way to improve the structure by adding an additional heat-treating step.
A new strategy has been developed to inhibit creep in metals by creating stable grain boundary networks. This approach enhances creep resistance, outperforming conventional superalloys. The research aims to improve high-temperature creep resistance in advanced alloys for industries such as energy and chemical processing.
Physicists at Ural Federal University have developed a theory regulating the solidification of iron-nickel alloys to control characteristics and improve uniformity. This technology will affect high-precision instruments like clocks, seismic sensors, and engines.
Lehigh University researchers have developed a new fabrication method for high-entropy alloys that can operate in extreme temperatures. The process uses lower temperatures and a different reaction route to achieve a more homogenous microstructure, potentially leading to the development of more efficient materials for aerospace and indu...
Researchers have discovered a way to create ductile ceramics that can exhibit ultimate strength of up to 11 GPa, potentially leading to improved energy efficiency and reduced material usage. However, further studies are needed to scale up the process and apply it to larger materials.
Using transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP), researchers design metastable alloys that can overcome the strength-ductility trade-off. The resulting materials are self-strengthening, making them suitable for applications such as earthquake construction, naval ships, and aerospace.
Scientists have successfully printed thin, one-millimeter-thick permanent magnets using selective laser sintering, retaining suitable characteristics for industrial use. This breakthrough enables complex magnet configurations necessary for pacemakers and minimizes production waste.
Researchers developed in-situ Ni alloying method to tailor microstructure and enhance strength of LAAM Ti-6Al-4V alloy. The results show that Ni addition increases yield strength and tensile strength while decreasing ductility.
A team of researchers led by Prof. Shinya Hosokawa analyzed the atomic configurations of Pd42.5Ni7.5Cu30P20, a champion bulk metallic glass, and found its characteristic configurations that lead to its excellent glass-forming ability.
Rare-earth metal alloys create new types of color-changing and branching sparks. The study found that these alloys, such as ytterbium and neodymium, produce more colorful sparks than single-metal powders.
Researchers aim to create crack-resistant, uniform materials with reduced residual stresses and porosity for use in AM. The project will combine the best processing features of existing alloys groups, resulting in lightweight, rigid, and thermally stable components.
Researchers have improved a magnetostrictive material that can withstand extremely low temperatures and is suitable for use in space. The compound, which includes terbium and iron, exhibits high magnetostriction values even at liquid nitrogen temperatures, making it ideal for controlling the position of space telescopes.
A research team led by City University of Hong Kong discovered a new mechanism that increases both strength and ductility in high-entropy alloys. The findings provide insights for designing strong yet ductile materials and ceramics.
University of Washington researchers have created a flexible, wearable thermoelectric device that converts body heat into electricity. The device's stretchable and efficient properties enable seamless integration into wearables and soft robotics.
Scientists investigated the local structure of a high-entropy Cantor alloy using X-ray absorption spectroscopy, revealing structural relaxations in chromium atoms and no evidence of secondary phases. The study correlated these findings with macroscopic magnetic properties.
Scientists have discovered how microscopic crystals grow and change shape in molten metals as they cool, leading to a better understanding of the tensile strength of alloys. The research, published in Acta Materialia, used high-speed synchrotron X-ray tomography to study the changing crystal structures in molten alloys.
Researchers from Texas A&M University developed a 3D-printed shape memory alloy with superior tensile superelasticity, nearly doubling the maximum reported in literature. The study used laser powder bed fusion to fabricate defect-free nickel-titanium parts with increased superelasticity.
Researchers at Texas A&M University used an Artificial Intelligence Materials Selection framework to discover a new shape memory alloy with the highest efficiency ever recorded. The alloy's narrow transformation temperature window and high cyclic stability make it ideal for thermal energy harvesting and storage.
Researchers at Ural Federal University have developed a method to significantly accelerate the synthesis of aluminum-based alloys using computer modeling. The new approach allows for control over the internal structure and physical properties of the alloy, enabling the creation of materials with desired characteristics.
Researchers from Osaka University report a new technique for tracking the synthesis of core–shell bimetallic nanoparticles in real time, allowing for fine-tuning of nanomaterial preparation. The technique uses a piezoelectric resonator to monitor particle shape changes and track interdiffusion of metals.
Researchers from Xi'an Jiaotong-Liverpool University provide valuable insights on managing C&D waste and reducing carbon emissions in building refurbishment projects. By upcycling generated waste, carbon emissions can be significantly reduced, with a potential reduction of around 40% compared to traditional practices.
Researchers at NTU Singapore have created a rapid and affordable method to evaluate the microstructure of 3D-printed metal alloys, providing insights into strength and toughness. This technology can benefit industries such as aerospace, where quality assessment is critical for maintenance and repair.
Researchers at the University of Nottingham have developed a groundbreaking technology to measure the microscopic elasticity of materials. By analyzing the speed of sound across the material's surface, they can reveal the orientation and inherent stiffness of small crystals, which is essential for material performance.
Researchers at City University of Hong Kong have discovered a super-elastic high-entropy Elinvar alloy that retains its stiffness even after being heated to 1000 K. The alloy's unique structure and chemical composition allow it to store a large amount of elastic energy, making it suitable for high-precision devices in aerospace enginee...
Researchers from South Ural State University and international universities reviewed over 200 sources to identify parameters that extend tool life in superalloys. The study suggests various methods, including tool tip texturing, flood cooling, and hybrid machining, to reduce wear and improve surface integrity.