Directions for Research on Structural Metallic Materials for Applications for USAF systems – the Role of Modern Tools to Maintain a Technological Advantage
Hamish L Fraser, Center for the Accelerated Maturation of Materials, Department of Materials Science and Engineering, The Ohio State University
October 12, 2017875 N. Randolph Street, Arlington, VARoom 40031:30pm to 2:30pm
Abstract: Over the past several decades, structural metallic materials have played an important, and often critical, role in applications of interest to the USAF. Gas turbine technology is a prime example of where advances in the performance of metallic alloys have played one of the pivotal roles in maintaining a significant technological advantage for the armed forces of the US. Recent alloy research for our military has been somewhat divided between basic research aimed at developing detailed mechanistic understandings of microstructural evolution (important in terms of producing appropriate balances of mechanical properties), using very sophisticated tools not previously available, and efforts to solve materials problems associated with new, attractive processing schemes, such as additive manufacturing (AM). In this talk, examples will be given of both of these research directions. Regarding basic understanding, two studies will be described, the first involving a determination of the role of instabilities on microstructural evolution in novel titanium alloys, and the second the development of new, so-called, high entropy alloys (HEA). Regarding processing research, studies will be described aimed at solving materials problems in AM, hot isostatic pressing of powders, and solid-state joining. The importance of the availability of sophisticated materials characterization tools and modern processing facilities will be emphasized.
Bio: Dr. Fraser graduated from the University of Birmingham (UK) with the degrees of B.Sc. (1970) and Ph.D. (1972). He was appointed to the faculty of the University of Illinois in 1973 (Assistant, Associate and Full Professor), before moving in 1989 to the Ohio State University (OSU) as Ohio Regents Eminent Scholar and Professor. He was appointed as a Senior Research Scientist at the United Technologies Research Center from 1979-1980. He has also been a Senior von Humboldt Researcher at the University of Göttingen, a Senior Visitor at the University of Cambridge, a visiting professor at the University of Liverpool, and he spent a sabbatical leave at the Max-Planck Institut für Werkstoffwissenscahften in Stuttgart. He has been an Honorary Professor of Materials and Technology at the University of Birmingham since 1988. In 2014, he was recognized as an Honorary Professor at the Nelson Mandela Metropolitan University in Port Elizabeth, South Africa. He is also an Adjunct Professor at Monash University in Australia and at the University of North Texas. At present, he serves as Director of the Center for the Accelerated Maturation of Materials (CAMM) at OSU. He has been a member of the National Materials Advisory Board and the US Air Force Scientific Advisory Board. He has consulted for a number of national laboratories and several industrial companies. He is a Fellow of TMS, ASM, IOM3 (UK), and MSA. He has published over 400 papers in scholarly journals, and given over 320 invited presentations. He has graduated over 50 doctoral students and 36 students graduating with the degree of M.S.
This lecture is presented by invitation only. Please contact Dr. Tristan Nguyen for details. info.security@us.af.mil.