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International Materials Institute: A dvanced N eutron S cattering net W ork for E ducation and R esearch (ANSWER) Peter Liaw, University of Tennessee, DMR 0231320. The fifth International Bulk-Metallic Glasses Conference at Awaji, 2006. Fatigue Specimen. Loading Direction. 4mm.

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International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER)

Peter Liaw, University of Tennessee, DMR 0231320

The fifth International Bulk-Metallic Glasses Conference at Awaji, 2006

Fatigue

Specimen

Loading

Direction

4mm

Sparkling Phenomenon

G. Y. Wang et al. / Intermetallics 12 (2004),1219-1227.

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.


&

NST2 Workshop, 2007

Mr. J. J. Wall

J-PARC

Structural analyses of protein crystals and fuel- cell materials

JRR-3

Spallation Neutron Source, Oak Ridge, TN, US

International Materials Institute: Advanced Neutron Scattering netWork for Education and Research (ANSWER)

Peter Liaw, University of Tennessee, DMR 0231320

Partnership Development & Exchange Program with Japan

IMI –ANSWER Symposia & Workshops

IMI-ANSWER Student Exchange

Program

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 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 hosted the Neutron Stress, Texture, and Phase Transformation Workshop (NST2) 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. 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 NST2, 2007.

IMI-ANSWER

Visiting Scholar Program

  • 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.


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