Nanolaminate of metallic glass and graphene with enhanced elastic modulus, strength, and ductility in tension

Citation data:

Scripta Materialia, ISSN: 1359-6462, Vol: 139, Page: 63-66

Publication Year:
2017
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/22366
DOI:
10.1016/j.scriptamat.2017.06.031
Author(s):
Park, Sun-Young; Gwak, Eun-Ji; Huang, Ming; Ruoff, Rodney S.; Kim, Ju-Young
Publisher(s):
Elsevier BV; PERGAMON-ELSEVIER SCIENCE LTD
Tags:
Materials Science; Physics and Astronomy; Sputtering; Tension test; Metallic glass; Multilayers thin films; Graphene
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article description
We fabricate a nanolaminate by repeated co-sputter deposition of a 60 nm-thick Cu 50 Zr 50 metallic glass layer alternating with transfer of graphene. In situ micro-tensile tests reveal that the addition of a very small fraction (0.46 vol%) of graphene in the nanolaminate improve the elastic modulus and yield strength of the nanolaminate by 9.6% and 14%, respectively, comparing with those of the 360 nm-thick monolithic Cu 50 Zr 50 metallic glass. The nanolaminate also show enhanced tensile ductility: an ultimate tensile strength of 2.23 GPa and fracture strain of 5.39% were attained by strain-hardening after yielding at 1.98 GPa stress and 3.69% strain.