International Materials Institutes (IMI), DMR-0231320

1. International Materials Institutes (IMI), DMR-0231320 Advanced Neutron Scattering netWork for Education and Research (ANSWER) P. K. Liaw and H. Choo, The University of Tennessee, USA International Collaborators: Y. D. Wang (Visiting Scholar) and L. Zuo, Northeastern University, China R. L. Peng, Linköping University, Sweden Domestic Collaborators: D. W. Brown, Los Alamos National Lab; Y. Ren, Argonne National Lab Tracing Atomic and Microscopic Mechanisms of Shape-Memory Alloys Motivation • Shape-memory materials, which can change their dimension upon the application of external (magnetic or electric) fields, have found wide applications in medical, aerospace, and marine industries as actuators or sensors. • The atomic and microscopic mechanisms on the degradation of the shape-memory effect (SME) used under different conditions remain unclear. The synergistic international collaborations using the in-situ neutron and high-energy X-ray diffraction techniques reveal the role of stresses in the SME. Research Efforts • The quantitative characterization on the multi-scale microstructural information is necessary for the understanding of the interactions among the global and local textures, various stresses, and materials performance. Neutron-diffraction experiments help us (1) understand the principles of the variant selections under external fields and (2) trace the microscopic ‘memory’. Sonar Systems in MarineApplications Impact • The experiments and theories help us improve the reliability and performance of structural components and develop new functional materials. SME is used in Satellite Antenna

2. International Materials Institutes (IMI), DMR-0231320 Advanced Neutron Scattering netWork for Education and Research (ANSWER) P. K. Liaw and H. Choo, The University of Tennessee, USA Elena Garlea, Ph.D. Student, IMI-ANSWER, University of Tennessee Wanchuck Woo, Ph.D. Student, IMI-ANSWER, University of Tennessee Award:Elena received an “Outstanding Student Research” Award from the Neutron Scattering Society of America (NSSA) for her poster submission in June 2006. • Elena participated in the ASM Materials Camp as one of the mentors, where 23 high school students (9 female students) attended from the East Tennessee area. Awards and Activities • The Minerals, Metals, and Materials (TMS) Society, 2nd Place Outstanding Student Paper Award. • 2006 Jerome B. Cohen Student Award for his neutron research. • Wanchuck will participate in the IMI international exchange program to theoretically model friction-stir welding at Univ. of Manchester, UK, for about 5 weeks in Fall 2006. American Society for Materials (ASM): 2006 Materials Camp • The research poster “Debris Analyses of the Space Shuttle Columbia” created by a team of high-school students won the 1st Place Award (3rd overall) at the 2006 Microscopy and Microanalysis Conference. High-school students at the Materials Camp Michael Benson, Ph.D. Student, IMI-ANSWER, University of Tennessee IMI International Exchange Program • Mike will be working with Prof. Walter Reimers at Technical Univ. Berlin. Prof. Reimers is a world-renowned expert in diffraction-profile analyses for the understanding of deformation behavior of advanced structural materials. Mike will stay in Germany from 9/12 to 10/16/2006. DESY Synchrotron Site, Hamburg, Germany