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International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER) Peter Liaw, University of Tennessee, DMR 0231320.

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Presentation on theme: "International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER) Peter Liaw, University of Tennessee, DMR 0231320."— Presentation transcript:

1 International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER) Peter Liaw, University of Tennessee, DMR 0231320 IMI-ANSWER-Japan Research Collaborations on Bulk-Metallic Glasses Motivation  Processing and properties of bulk-metallic glasses (BMGs) have been widely studied. However, their atomic structures still remain mysterious.  Structural models of BMGs are typically based on hard-sphere representations, which offer little direct correlation to the observed properties, such as mechanical behavior.  A further understanding of the local atomic structure of BMGs is critical for developing and manufacturing the next-generation, glass- forming alloys.  Current collaborations focus on the glass- forming ability and fatigue behavior of BMGs. Research Efforts with Dr. Y. Yokoyama and President A. Inoue, Tohoku University, Sendai  Designing and fabricating BMGs.  Using the neutron diffraction on the Neutron Powder Diffractometer (NPDF) at the Los Alamos National Laboratory and Small Angle Neutron Scattering (SANS) at the National Institute of Science & Technology (NIST) to study the atomic structures.  Applying computational simulations to understand the mechanisms. Impact  The collaborations develop new materials and study their properties and potential applications.  The number of IMI-ANSWER-Japan collaborators’ publications is 14. Fatigue Specimen Sparkling Phenomenon G. Y. Wang et al. / Intermetallics 12 (2004),1219-1227. Loading Direction 4mm The fifth International Bulk-Metallic Glasses Conference at Awaji, 2006

2 International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER) Peter Liaw, University of Tennessee, DMR 0231320 International Research Network IMI-ANSWER organizes symposia and workshops to develop the partnerships among Japanese, other Asia countries’, European, and US research societies. IMI-ANSWER Student Exchange Program IMI-ANSWER Students Visited Japan  Mr. J. J. Wall visited the Japan Ultrahigh Temperature Materials Research Laboratory (JUTEM) at Tajimi, Gifu.  Dr. M. L. Morrison and Dr. W. Peter conducted the joint research on BMGs at Tohoku University. IMI-ANSWER Visiting Scholar Program  Dr. Y. Morii of the Japan-Spallation Neutron Source introduced the industrial application of neutron at the Japan Research Reactor - No. 3 (JRR-3) and the Japan Proton Accelerator Research Complex (JPARC) to the US and international participants in NST 2, 2007.  IMI-ANSWER hosted the Neutron Stress, Texture, and Phase Transformation Workshop (NST 2 ) at the Spallation Neutron Source, Oak Ridge, Tennessee, US, 2007. Speakers from overseas interacted with participants from institutions worldwide. Please refer to ANSWER website at http: answer.utk.edu.  Dr. Y. Yokoyama of Tohoku University visited University of Tennessee, 2007.  Dr. C. Fan of University of Tennessee fabricated bulk-metallic glasses at Tohoku University, 2006. Partnership Development & Exchange Program with Japan Spallation Neutron Source, Oak Ridge, TN, US Mr. J. J. WallNST 2 Workshop, 2007 IMI –ANSWER Symposia & Workshops Structural analyses of protein crystals and fuel- cell materials J-PARC JRR-3 &


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