U.S. launches national security probe into titanium sponge imports (US)

WASHINGTON (Reuters) – The U.S. Commerce Department on Monday launched a national security probe into titanium sponge imports, a key input in military aircraft and other equipment like space vehicles, satellites, naval vessels, missiles and munitions. The probe under Section “232” follows an investigation by the Commerce Department in 2017 to review if titanium sponge imports from Japan and Kazakhstan were injuring U.S. producers and was prompted by a petition from U.S.-based Titanium Metals Corp, part of Berkshire Hathaway Inc’s Precision Castparts Corp. In 2017, the U.S. International Trade Commission voted to end its probe into the imports, saying it found no harm. The Commerce Department said the Pentagon supported the national security probe. “Titanium Continue reading

US Army prints ultra-strong steel parts from powder (US)

Using advanced additive manufacturing techniques, Army scientists work with an Air Force-invented steel alloy to print intricate geometries with ultra-high-strength. This sample, created using a technique called powder bed fusion, is the symbol of the newly formed Army Futures Command. The steel is 50-percent stronger than what is commercially available. (U.S. Army photo by David McNally)

ABERDEEN PROVING GROUND, Md. (Feb. 27, 2019) — Soldiers needing replacement parts may turn to 3-D printers in the future to rapidly deliver reliable and ultra-strong metal parts. Army researchers are looking at new technologies to create steel alloy parts from powder using a laser. At the U.S. Army Combat Capabilities Development Command’s Army Research Laboratory, materials manufacturing scientists say this technology may change everything. “I think it’s going to really revolutionize logistics,” said Dr. Brandon McWilliams, a team lead in the lab’s manufacturing science and technology branch. “Additive manufacturing is going to have a huge impact on sustainment.” While progress remains steady, McWilliams said realizing the dream of quickly printed, reliable 3-D metal parts is still a long way off; however its benefits will be substantial. “You can really reduce your logistics footprint,” he said. “Instead of worrying about carrying a whole Continue reading

US DOE powers Aluminum and Steelmaking Research through HPC4Manufacturing Program (US)

Under a newly awarded HPC4Manufacturing project, Lawrence Livermore National Laboratory will work with the U.S. Steel Corporation on a hot strip mill simulation model that will provide predictions of through-thickness temperature, deformation behavior and associated microstructure. Credit: Photo courtesy of U.S. Steel Corporation.

The HPC4Manufacturing Program announced four federal funding awards for solving key manufacturing challenges in steelmaking and aluminum production through supercomputing. This most recent Call for Proposalshad a special focus — applying the unparalleled HPC capabilities of DOE national labs to steelmaking and aluminum production processes. Under the program, each selected industry partner will have access to the national labs’ HPC machines and expertise to help these industries become more competitive, boost productivity and support American manufacturing jobs.

“Primary metals industries are significant energy users, so opportunities to reduce energy consumption in this area is of great interest to our sponsors,” said HPC4Manufacturing Director Robin Miles of LLNL. “Additionally, this program is helping U.S. steel makers produce the higher strength steels vital to light weighting the next generation of automobiles.

Funded by DOE’s Advanced Manufacturing Office, the HPC4Mfg Program is administered by Lawrence Livermore National Laboratory (LLNL) along withContinue reading

La BEI et Aperam signent un contrat de 100 millions (FR)

Basé au Luxembourg, Aperam est un acteur mondial du secteur de l’acier inoxydable, de l’acier électrique et des aciers spéciaux. (Photo: Aperam)

La Banque européenne d’investissement et le groupe basé au Luxembourg annoncent la signature d’un contrat de financement pour un montant de 100 millions d’euros. La BEI finance ainsi des technologies avancées de production d’acier inoxydable.

Avec un chiffre d’affaires de 4,68 milliards d’euros et des expéditions d’acier de 1,97 million de tonnes, le groupe Aperam, basé au Luxembourg, est un acteur mondial du secteur de l’acier inoxydable, de l’acier électrique

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Titanium pressure vessel for space exploration built successfully using the Wire + Arc Additive Manufacturing process (US)

A team comprising of Thales Alenia Space, Cranfield University and Glenalmond Technologieshave successfully produced a first full-scale prototype of a titanium pressure vessel to be used in future manned missions for space exploration. The piece is approximately 1m in height and 8.5kg in mass. Made of the titanium alloy (Ti-6Al-4V), it has been deposited using the Wire + Arc Additive Manufacturing (WAAM) process, which Cranfield University has pioneered over the last decade. Thanks to being able to go straight from digital drawing to final structure, WAAM has integrated two individual pieces into a single part; eliminating the need for long-lead-time forgings; and substantially reduced the amount of waste material removed by machining. If manufactured traditionally, the component Continue reading

Aerospace Industry Increasingly Turns to PVD Coatings to Replace Hard Chrome (US)

Thermal barrier coatings protect the engines of military aircraft – like this F100 engine, but are also applied in civil aircraft

The search for a suitable replacement to hard chrome on aerospace components has been a key supply chain priority for aircraft manufacturers. This is because of the documented health risks to workers and the impact on the environment from exposure to hexavalent chromium, a carcinogen that occurs during the chrome plating process and the most toxic form of chromium. As a result, chromium is a highly regulated chemical in major markets worldwide. In the European Union, hexavalent chromium falls under the domain of the EU regulation, REACH Continue reading

Framatome, champion du zirconium (US)

Chaque année, la France en importe près de 23 000 tonnes d’Afrique du Sud (59% de ses importations totales), et dans une moindre mesure du Mozambique (20%) et du Sénégal (6%)

Extrait du zircon, le zirconium est très prisé par l’industrie nucléaire. “Compte-tenu de sa très bonne transparence aux neutrons, les alliages au zirconium servent surtout de gaines isolantes autour des crayons de combustible des réacteurs dans les centrales”, précise Mathieu Leguérinel. En France, c’est Framatome qui produit le zirconium et le hafnium. Cette filiale d’EDF (anciennement dans le groupe Areva) a développé un savoir-faire dans l’élaboration de ce métal dès les années 1960. Le volume de zirconium qu’elle produit représente 21% des exportations dans le monde. Pour maintenir son rang face aux géants du secteur (tels les américains Westinghouse et ATI), le groupe peut s’appuyer sur sa filière de transformation. Les éponges de zirconium produites à Jarrie (Isère) sont fondues à UgineContinue reading

Outstanding radiation resistance of tungsten-based high-entropy alloys (US)

APT analysis of the HEA irradiated to 8 dpa with 3-MeV Cu+ at 1050 K. –  (A) to (D) 3D distribution of Cr, V, Ta, and W. (E) to (H) 2D compositional maps of Cr, V, Ta, and W using a slice of 25 nm by 1 nm by 20 nm. (I) to (L) Top-down view showing the location of three different GBs and the corresponsing elemental segregation. Reconstruction side-view (M) and top-view (N) with 25 at % Cr isocomposition surface showing Cr-V–rich precipitates inside grains. (O) Compositional partitioning between the precipitate and the matrix. ppts, precipitates.

A body-centered cubic W-based refractory high entropy alloy with outstanding radiation resistance has been developed. The alloy was grown as thin films showing a bimodal grain size distribution in the nanocrystalline and ultrafine regimes and a unique 4-nm lamella-like structure revealed by atom probe tomography (APT). Transmission electron microscopy (TEM) and x-ray diffraction show certain black spots appearing after thermal annealing at elevated temperatures. TEM and APT analysis correlated the black spots with second-phase particles rich in Cr and Continue reading

Australian Outstanding Metallugist Sir Rupert Myers : Inspiring scientist with a passion for education

A materials scientist, academic and distinguished university administrator, Emeritus Professor Sir Rupert Myers was in 1948 one of the first two people to be awarded a PhD from an Australian university. As UNSW’s second vice-chancellor, he was instrumental in establishing the university’s character and presence in the academic world. After developing processes for producing uranium powder and converting plutonium compounds into metal as a metallurgist in England, Sir Rupert joined UNSW in 1952 as the foundation chair of metallurgy. In 1961 he became pro vice-chancellor and then in 1969 he became vice-chancellor, continuing in that role until 1981. The politicalContinue reading

3D printing technology enhancing logistics for Army (US)

A Soldier holds a cap used to protect the fire extinguishing system housed in the wheel wells of Mine-Resistant Ambush Protected vehicles. Without the cap, MRAPs are deemed non-mission-capable. Soldiers in Korea saved 1,472 operational days for their MRAPs by 3-D printing the caps for about $2.50 each. (Photo Credit: Sam Curtis)

FORT MEADE, Md. — As 3D printing increases both in the field and at depots, the Army’s Center of Excellence for Additive and Advanced Manufacturing is slated to reach initial operating capability this year at Rock Island Arsenal, Illinois.  Lt. Gen. Aundre Piggee, the Army’s deputy chief of staff, G-4, outlined the Army’s current 3D printing capabilities at the 2019 Military Additive Manufacturing Summit and Technology Showcase Feb. 6, in Tampa, Florida.  At the summit, defense, academia, and industry officials were privy to the latest additive manufacturingContinue reading