September_AMP_Digital

A D V A N C E D M A T E R I A L S & P R O C E S S E S | S E P T E M B E R 2 0 1 9 1 0 METALS | POLYMERS | CERAMICS Steel Dynamics, Inc., Fort Wayne, Ind., announced Sinton, Texas, as the site for the company’s new state-of-the-art, electric-arc- furnace flat roll steel mill. Sinton is located 30 miles northwest of the port of Corpus Christi, Texas, and is strategically located within the targeted Southwest U.S. and Mexico market regions. The proj- ect is expected to be the world’s largest thin-slab facility. steeldynamics.com . PPG, Pittsburgh, will acquire Dexmet Corp., Wallingford, Conn., a man- ufacturer of specialty materials for surfaces in aerospace, automotive, and industrial applications. The transaction is expected to close in third quarter 2019; financial terms were not disclosed. ppg.com , dexmet.com . Allegheny Technologies Inc., Pittsburgh, announced it has completed the sale of its Cast Products business unit to Consolidated Precision Products Corp., Cleveland. atimetals.com, cppcorp.com . BRIEFS properties in multifunctional metal al- loys. The phenomenon, called magne- tostriction, enables alloys to emit and absorb heat at the same time as well as change their size and volume. The resulting alloys could have many appli- cations in medicine and industry. A team of scientists from Peter the Great St. Petersburg Polytechnic Uni- versity, Russia, calculated the combi- nation of components in an alloy that would allow for heat absorption and emission and shape and size changes within a wide variety of temperatures including those close to human body temperature. The obtained material may be used to developmagnetostrictive trans- ducers. They serve as sensors, filters, and resonators that transform the magnetic field into mechanical os- cillations and vice versa. This is an important function for various devic- es, such as materal integrity control- lers that help find air bubbles with- Depiction of the structure of rhenium nitride pernitride contain- ing single nitrogen atoms (red) and N-N nitrogen dumbbells (blue), with larger balls representing rhenium atoms. Courtesy of University of Bayreuth/MaximByko. METALLICALLY CONDUCTIVE NOVEL MATERIAL A group of international re- searchers has developed a previously unknown material—rhenium nitride pernitride. Led by scientists from the University of Bayreuth, Germany, the group produced the new material by combining properties that were pre- viously considered incompatible. The novel material is a super-hard metallic conductor that can withstand extreme- ly high pressures like a diamond, and thus has great potential for technolog- ical applications. The process disco- vered in Bayreuth opens up the possibility of pro- ducing rhenium nitride pernitride and other technologically interest- ing materials in suffi- ciently large quanti- ty for their properties characterization. At the heart of the new process is a reac- tion of rhenium with ammonium azide. Syn- thesized in this way, the material can be in- vestigated under ambi- ent conditions. And the process can be used for the synthesis of other nitrides; in particular, nitrides of transitionmetals, which could also have technologically important properties. “What is particularly exciting is that the development and synthesis of the new material contradicts and clear- ly disproves previous views that were firmly established in materials science. We have succeeded in doing something that, according to earlier predictions, should not have been possible at all. This should stimulate and encourage further theoretical and experimental work in the field of high-pressure mate- rial synthesis,” the researchers explain. uni-bayreuth.de/en. METAL ALLOY SHAPE-SHIFTS IN MAGNETIC FIELD Scientists have found a new way to use the magnetic field to transform Scientists in Russia developedmultifunc- tional metal alloys that emit and absorb heat while changing their size and volume by way of a magnetic field. Cour- tesy of Peter the Great St. Petersburg Polytechnic University.