Published June 1, 1996
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Journal Article
Open
Surface microstructure of Zr41.25Ti13.75Cu12.5Ni10.0Be22.5, a bulk metallic glass
Chicago
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Abstract
The surface of Zr41.25Ti13.75Cu12.5Ni10.0Be22.5, a bulk metallic glass prepared by RF induction melting, has been imaged using atomic force microscopy. The untreated surfaces were very smooth; features were no higher than 3 nm over a 10 x 10 µm region, comparable to many polished surfaces. Two types of microstructure were also observed; periodic striations forming either a striped or a checkered structure were present, with wavelengths between 1 and 2 µm, and amplitude of approximately 2 nm; in other cases, "cracked mud"-like patterns were observed. These microstructures could be related to strain-induced surface roughening; preliminary calculations are presented that are consistent with this hypothesis.
Additional Information
© 1996, Materials Research Society (Received 16 June 1995; accepted 14 February 1996) M.A. LaMadrid was supported by a NRC Ford Foundation fellowship, an AAUW fellowship, and by a grant from the Department of Energy (DEFG0386 ER45242). S.D. O'Connor was supported by an NIH training grant. We thank Y.J. Kim for providing us with the electrostatically levitated samples, and X.H. Lin for the crystallized sample. The authors would also like to acknowledge useful conversations with M. Cross, B. Spencer, and D. Meiron.Files
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