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Nanometallic Glasses: Size Reduction Brings Ductility, Surface State Drives Its Extent

Chen, D. Z. and Jang, D. and Guan, K. M. and An, Q. and Goddard, W. A., III and Greer, J. R. (2013) Nanometallic Glasses: Size Reduction Brings Ductility, Surface State Drives Its Extent. Nano Letters, 13 (9). pp. 4462-4468. ISSN 1530-6984. http://resolver.caltech.edu/CaltechAUTHORS:20140213-094643087

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Abstract

We report tensile experiments on Ni_(80)P_20 metallic glass samples fabricated via a templated electroplating process and via focused ion beam milling, which differed only in their surface energy states: Ga-ion-irradiated and as-electroplated. Molecular dynamics simulations on similar Ni_(80)Al_20 systems corroborate the experimental results, which suggest that the transition from brittle to ductile behavior is driven by sample size, while the extent of ductility is driven by surface state.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/nl402384rDOIArticle
http://pubs.acs.org/doi/abs/10.1021/nl402384rPublisherArticle
ORCID:
AuthorORCID
An, Q.0000-0003-4838-6232
Goddard, W. A., III0000-0003-0097-5716
Greer, J. R.0000-0002-9675-1508
Additional Information:© 2013 American Chemical Society. Received: June 28, 2013; revised: August 17, 2013; published: August 26, 2013. The authors gratefully acknowledge the financial support of the U.S. Department of Energy, Office of the Basic Energy Sciences and NASA’s Space Technology Research Grants Program through J.R.G.’s Early Career grants. The authors also acknowledge support and infrastructure provided by the Kavli Nanoscience Institute (KNI) at Caltech. All computations were carried out on the SHC computers (Caltech Center for Advanced Computing Research) provided by the Department of Energy National Nuclear Security Administration PSAAP project at Caltech (DE-FC52-08NA28613) and by the NSF DMR-0520565 CSEM computer cluster. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. Any opinion, findings, and conclusions or recommendations expressed in the material are those of the authors(s) and do not necessarily reflect the views of the National Science Foundation.
Group:Kavli Nanoscience Institute
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
Department of Energy (DOE) National Nuclear Security AdministrationDE-FC52-08NA28613
NSFDMR-0520565
NSF Graduate Research FellowshipDGE-1144469
Subject Keywords:Metallic glass; electroplating; NiP; brittle-to-ductile; molecular dynamics
Record Number:CaltechAUTHORS:20140213-094643087
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140213-094643087
Official Citation:Nanometallic Glasses: Size Reduction Brings Ductility, Surface State Drives Its Extent D. Z. Chen, D. Jang, K. M. Guan, Q. An, W. A. Goddard, III, and J. R. Greer Nano Letters 2013 13 (9), 4462-4468
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43807
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:13 Feb 2014 19:05
Last Modified:20 Dec 2016 19:31

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