Journal
MATERIALS & DESIGN
Volume 65, Issue -, Pages 98-103Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2014.09.017
Keywords
Bulk metallic glass; Intermetallics
Categories
Funding
- U.S. Department of Energy (DOE), Office of Basic Energy Science, Division of Materials Science and Engineering
- Iowa State University [DE-AC02-07CH11358]
- Technical Education Quality Improvement Program (TEQIP II), Government of India
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Partially vitrified Zr60Cu10Al15Ni15 bulk metallic glass has been synthesized using water cooled copper mold drop casting technique. Kinetically favorable microstructures having different morphologies are observed throughout the volume of the bulk metallic glass sample. X-ray diffraction studies indicate formation of hard intermetallic compounds such as Zr3Al2 and Zr2Ni in certain regions along with amorphous structures. Microindentation studies carried out in different regions of the sample reveal microstructure dependent deformation behavior. Highest hardness is observed in the fully crystallized regions compared to pure glassy regions in the same sample. Further nanoindentation in the same sample is used to understand dynamic mechanical properties of microstructures in different regions. The pile-up morphologies around the indent and differences in load-displacement curves provide vital information on deformation behavior of sample in different microstructure sensitive regions. (C) 2014 Elsevier Ltd. All rights reserved.
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