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1 2 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 | F E B R U A R Y / M A R C H 2 0 2 0 determine the stress required to rup- ture heat-resistant steels and alloys in 100,000 hours at high temperatures. This creep rupture strength data was initially needed to determine the allow- able stresses metals could be exposed to in power plants. More recently, the data was used to assess how much lon- ger power plant parts have before they begin to wear. In 1978, NIMS also began assem- bling a huge database of fatigue prop- erties of structural materials used in numerous industries such as automo- tive and aerospace. NIMS data shows that the long-term creep strength of materials varies and that scientists need to choose the type of analysis method for creep rupture data accord- ing to the material. Researchers found that materials react differently to vary- ing temperature depending on their TESTING | CHARACTERIZATION NEW METHOD MEASURES QUANTUM MATERIALS Experimental physicists at the DOE’s Ames Laboratory, Iowa, com- bined several measurements of quan- tum materials into one to learn more about manipulating and controlling their behavior for potential appli- cations. The team calls their new approach magneto-elastoresistance, or MER. Lab scientists in condensed mat- ter physics have a long history of inves- tigating “weird” materials, according to physicist Paul Canfield. In this case, weird means metallic and semimetallic compounds that have magnetic, super- conducting, or other properties that Lehigh University, Bethlehem, Pa., held a materials symposium in November 2019 bringing industry and academics together. Research leaders from organizations including Corning, Solvay, Exxon-Mobil, Special Metals, Vitro, and the U.S. Army were among the event’s pre- senters. Guest researchers held discussions about materials research is- sues they believe to be ideal for graduate student exploration. lehigh.edu . BRIEFS Magnetic Analysis Corp., Elmsford, N.Y., along with fellow nondestructive testing leaders Sensor Networks Inc., State College, Pa., and Zetec, Snoqual- mie, Wash., have joined forces to offer the ZMS program. ZMS is a single alternative for bar and tube producers needing to service and upgrade their phased array systems such as ROWA and BIS for detecting flaw, wall thickness, geometry, and lamination. mac-ndt.com. might be useful in technol- ogy applications such as quantum computing. The team system- atically studied WTe 2 , a semi-metal, by exposing it to electric current, mag- netic field, and strain from pushing and pulling. The scientists found that the material reacted with large changes in elastoresistance and that it was further con- trollable by magnetic field, especially at low temperatures. By pairing exper- imental findings with density func- tional theory and modeling, the team was able to demonstrate that MER is tied to the redistribution of carriers from different bands, i.e., heavy hole band, light hole, and electron band. The physicists concluded that MER is a worthy way of looking for similar effects in similar materials and learning how or when they will occur. ameslab.gov, iastate.edu. 50 YEARS OF STUDYING METAL FATIGUE For half a century, researchers at the National Institute for Materials Science (NIMS), Japan, have been con- ducting short and long-term testing of various structural materials manu- factured in Japan to ensure they can withstand long-term stresses. Now, the scientists have reviewed all of this data to summarize the findings. In 1966, NIMS’ predecessor launched its “creep data sheet project.” The goal was to MER graphically defined. Courtesy of Ames Laboratory. This pipe specimen ruptured during a creep test. Courtesy of National Institute for Materials Science.