US Army Develops New Gold-Silver Alloy for Military use (US)

U.S. Army Research Laboratory scientists Dr. David Baker and Dr. Joshua McClure pose in their lab at the Adelphi Laboratory Center, where they are working to lighten the load and enhance the power of Soldier devices used on the battlefield. (Credit Photo -U.S. Army Photo by Jhi Scott)

  • Army researchers are using metallic alloys to lighten the load and enhance the power of Soldier devices used on the battlefield.
  • This research was recently featured on the cover of Advanced Optical Materials.

ADELPHI, Md. (Oct. 2, 2018) — What happens when gold and silver just don’t cut it anymore? You turn to metallic alloys, which are what Army researchers are using to develop new designer materials with a broad range of capabilities for our Soldiers. This is exactly what scientists Dr. David Baker and Dr. Joshua McClure from the U.S. Army Research Laboratory are doing to lighten the load and enhance the power of Soldier devices used on the battlefield. Their research, conducted in collaboration with Prof. Marina Leite and Dr. Chen Gong atContinue reading

US Navy and Lockheed Martin Put Artificial Intelligence Into 3D Printers (US)

The drive to push 3D printing into the field is getting a boost from an unexpected ally — artificial intelligence that can monitor robots and teach them how to do a better job.

One thing about airplanes—especially ones that fly from aircraft carriers, where they’re battered by saltwater and tough deck landings—is that they need lots of spare parts that are not always on hand. Instead of flying in new parts, though, future Navy ships may be able to make new ones to order. Picutre an intelligent, laser-wielding robot that can analyze the damage and 3D-print the needed titanium alloy parts from an onboard supply of metallic dust. This is one glimpse of the future proposed by the Office of Naval Research (ONR), which today announced a two-year, $5.8 million contract to create a new generation of super-smart 3D printers. The printers would not onlyContinue reading

The Tungsten’s Bullet That Swims Through Water (US)

Nammo’s penetrators, both for vehicles and other types of armor piercing ammunition, are made out of a super tough tungsten alloy, also known as wolfram. More than two times as heavy as steel, it has the second highest melting point of any element, making it ideal for use in armor piercing ammunition. For some ammunition types, including the 25 mm APEX for the F-35, tungsten is mixed with carbon, creating tungsten carbide. This makes the penetrators harder, but also more brittle, allowing them to fragment once they have penetrated the armor, causing added damage inside the target

The U.S. Navy and Norwegian defense group Nammo have developed a super-cavitating bullet that can travel through water. While traditional ammunition is either stopped or deflected when it hits water, Nammo’s 30 mm Swimmer (APFSDS-T MK 258 Mod 1) swims straight through it. Nammo says the U.S. Army and the U.S. Navy are now adopting the Swimmer for use from many platforms, includingContinue reading

U.S. Air Force Funds Research on High-Performance Materials (US)

Matthew Miller, right, associate director of the Cornell High Energy Synchrotron Source (CHESS), watches graduate student Mark Obstalecki prepare a sample for analysis in the F2 hutch at CHESS. (redit Photo @ Cornell Brand)

For the past 10 years, the U.S. Air Force has funded research on high-performance materials at the Cornell High Energy Synchrotron Source (CHESS). The partnership has resulted in numerous advances, including a greater understanding of metal fatigue and analysis of the best metals for aircraft. This partnership was extended with $8 million in funding to CHESS as part of the fiscal year 2019 defense Continue reading

Carpenter, Arconic, P&W, and Siemens awarded funding for advanced materials research programs (US)

Carpenter Technology Corporation will partner with LLNL to develop a predictive model of APB energy for superalloys to improve the “virtual synthesis” process in industry in a project titled “Development of a Predictive Model of Antiphase Boundary Energy for L12 Strengthened Superalloys”.
Arconic Inc. will partner with LLNL and ORNL to develop advanced understanding of the non-equilibrium metallic phases established during metal additive manufacturing (AM) processes in a project titled “Multiscale Modeling of Microstructure Evolution During Rapid Solidification for Continue reading

A high-entropy alloy with hierarchical nanoprecipitates and ultrahigh strength (US)

High-entropy alloys (HEAs) are a class of metallic materials that have revolutionized alloy design. They are known for their high compressive strengths, often greater than 1 GPa; however, the tensile strengths of most reported HEAs are limited. Here, we report a strategy for the design and fabrication of HEAs that can achieve ultrahigh tensile strengths. The proposed strategy involves the introduction of a high density of hierarchical intragranular nanoprecipitates. To establish the validity of this strategy, we designed and fabricated a bulk Fe25Co25Ni25Al10Ti15 HEA to consist of a principal face-centered cubic (fcc) phase containing hierarchical intragranular nanoprecipitates. Our results show that precipitation strengthening, as one of the main strengthening mechanisms, contributes to a tensile yield strength (σ0.2) of ~1.86 GPa and an ultimate tensile strength of ~2.52 GPa at room temperature, which heretofore represents the highest strength reported for an HEA with an appreciable failure strain of ~5.2%.

The traditional alloy design concept combines one or two principal elements with additional minor elements, an approach that restricts the development and application of alloys due to the limited compositional space explored (1). Thus, to enable the pursuit of alloys with special microstructures and properties, such as high strength, new design concepts are needed. Recently, a brand new class Continue reading

Le Ministre des finances luxembourgeois visite le centre de recherche d’ArcelorMittal à Esch/Alzette (FR)

Lors de sa visite, le ministre a découvert les domaines d’intervention du Centre de recherche et, plus particulièrement, les produits phares du groupe ArcelorMittal. Ce fut également une occasion pour parler, ensemble avec les intervenants, sur les implications de la digitalisation dans l’industrie sidérurgique. Le ministre a également visité des installations dédiées à la métallographie. Il s’agit de laboratoires où sont notamment analysées les structures des aciers via un Continue reading

SSAB and Sandvik are joining forces to use Artificial Intelligence (AI) in the whole life cycle of Steel Production (US)

SSAB and Sandvik Materials Technology are joining forces to find the best ideas on how to track steel products during their whole life cycle.

Today the SmartSteel Innovation Challenge is launched, an initiative by SSAB and Sandvik Materials Technology looking to find new brilliant ideas on what a future steel fingerprint could be made of. Is it digital, does it use artificial intelligence, is it a chemical solution, or could it be mechanics? Companies and research groups of all sizes are welcome to participate, and the winner will get the chance to develop the idea in a long-term partnership with SSAB and Sandvik Materials Technology, with access to vast business knowledge and international customer Continue reading

McNAIR Center for Aerospace Innovation and Research Adds Metal Alloys to its Fabricating Capabilities (US)

In just one year the university’s McNAIR Center for Aerospace Innovation and Research has nearly doubled in size, taking under its wing new laboratories for drone design, combustion research and a data analytics program focused on Army helicopter maintenance. The center’s 3D printing laboratory has added metal alloys to its fabricating capabilities, and a virtual design space will soon showcase McNAIR’s capabilities in digital twin design and virtual and augmented reality environments. The center now occupies about 35,000 square feet of laboratory and administrative space near the College of Engineering and Computing. On Sept. 26, the center will  host a one-day showcase of its research activities in composites, digital transformation, predictive analytics, 3D printing, combustion and unmanned vehicles.

“Our focus on design, manufacturing and digital transformation is now connecting us with aerospace companies like never before.”

Abdel Bayoumi, McNAIR Center director

When the McNAIR Center took flight about five years ago, its initial research equipment included an Ingersoll fiber

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MetalDays 2018 – l’événement de l’année en métallurgie ! (FR)

Pour sa 4e édition, les MetalDays seront les 07 et 08 novembre 2018 à l’Atrium de Chaville le lieu de rencontre et d’échange des acteurs les plus importants des industries de la métallurgie, de la transformation des métaux et de leurs usages. Regroupant les sociétés les plus représentatives et novatrices du secteur, de la PME à la multinationale, cette manifestation est le lieu de rencontre des fournisseurs et donneurs d’ordres utilisant le matériau métallique. Pendant 2 jours, se dérouleront en parallèle des conférences plénières, des tables rondes, des ateliers, des rendez-vous d’affaires et des expositions avec pour ambition d’aborder tant lesContinue reading