Rapid chemical and topological ordering in supercooled liquid Cu46Zr54
نویسندگان
چکیده
V. Wessels,1,6,* A. K. Gangopadhyay,1 K. K. Sahu,1,6 R. W. Hyers,2 S. M. Canepari,2 J. R. Rogers,3 M. J. Kramer,4 A. I. Goldman,4 D. Robinson,4,5 J. W. Lee,7 J. R. Morris,7 and K. F. Kelton1 1Washington University, Department of Physics, St. Louis, Missouri 63130, USA 2University of Massachusetts, Department of Mechanical Engineering, Amherst, Massachusetts 01003, USA 3NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA 4Ames Laboratory, U.S. DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 5Argonne National Laboratory, Argonne, Illinois 60439, USA 6ETH Zurich, Department of Materials, 8046 Zurich, Switzerland 7Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA (Received 30 September 2010; revised manuscript received 7 January 2011; published 14 March 2011)
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How the toughness in metallic glasses depends on topological and chemical heterogeneity.
To gain insight into the large toughness variability observed between metallic glasses (MGs), we examine the origin of fracture toughness through bending experiments and molecular dynamics (MD) simulations for two binary MGs: Pd82Si18 and Cu46Zr54 The bending experiments show that Pd82Si18 is considerably tougher than Cu46Zr54, and the higher toughness of Pd82Si18 is attributed to an ability to...
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