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【期刊论文】Nearest-neighbor coordination and chemical ordering in multicomponent bulk metallic glasses
吕昭平, D. Ma, A. D. Stoica, L. Yang, X.-L. Wang, Z. P. Lu, J. Neuefeind, M. J. Kramer, J. W. Richardson, Th. Proffen
APPLIED PHYSICS LETTERS 90, 211908 (2007),-0001,():
-1年11月30日
The authors report complementary use of high-energy x-ray and neutron diffraction to probe the local atomic structure in a Zr-based bulk metallic glass. By analyzing the partial coordination numbers, the authors demonstrate the presence of multiple types of solute-centered clusters in the multicomponent glass and efficient packing of the amorphous structure at atomic scale. The authors’ findings provide a basis for understanding how local structures change during phase transformation and mechanical deformation of multicomponent amorphous alloys. © 2007 American Institute of Physics. [DOI: 10.1063/1.2742315]
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吕昭平, H. Bei, , Z. P. Lu, E. P. George
PHYSICAL REVIEW LETTERS VOLUME 93, NUMBER 12, 17 SEPTEMBER 2004,-0001,():
-1年11月30日
The mechanical behavior of bulk metallic glasses (BMGs) was investigated by nanoindentation with a spherical indenter. The transition from perfectly elastic behavior to plastic deformation was clearly observed as a pop-in event (sudden displacement excursion) on the load-displacement curves. Hertzian stress analysis was used to describe fully the load-displacement behavior during elastic deformation and to determine the theoretical shear strengths of the BMGs.
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