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Title: Effects of helium implantation on the tensile properties and microstructure of Ni₇₃P₂₇ metallic glass nanostructures

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl502074d· OSTI ID:1193293
 [1];  [1];  [2];  [2];  [2];  [2];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We report fabrication and nanomechanical tension experiments on as-fabricated and helium-implanted ~130 nm diameter Ni₇₃P₂₇ metallic glass nano-cylinders. The nano-cylinders were fabricated by a templated electroplating process and implanted with He⁺ at energies of 50, 100, 150, and 200 keV to create a uniform helium concentration of ~3 at. % throughout the nano-cylinders. Transmission electron microscopy (TEM) imaging and through-focus analysis reveal that the specimens contained ~2 nm helium bubbles distributed uniformly throughout the nano-cylinder volume. In-situ tensile experiments indicate that helium-implanted specimens exhibit enhanced ductility as evidenced by a 2-fold increase in plastic strain over as-fabricated specimens, with no sacrifice in yield and ultimate tensile strengths. This improvement in mechanical properties suggests that metallic glasses may actually exhibit a favorable response to high levels of helium implantation.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0006599; AC52-06NA25396
OSTI ID:
1193293
Report Number(s):
LA-UR-14-27879
Journal Information:
Nano Letters, Vol. 14, Issue 9; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (11)

A Review on the Radiation Response of Nanoporous Metallic Materials journal August 2018
Radiation-Induced Helium Bubbles in Metals journal March 2019
Mechanical Response of He-Implanted Amorphous SiOC/Crystalline Fe Nanolaminates journal March 2019
IM3D: A parallel Monte Carlo code for efficient simulations of primary radiation displacements and damage in 3D geometry journal December 2015
Superplastic nanoscale pore shaping by ion irradiation journal February 2018
Irradiation Enhances Strength and Deformability of Nano-Architected Metallic Glass journal February 2018
Focused-helium-ion-beam blow forming of nanostructures: radiation damage and nanofabrication journal October 2019
Nano-beam and nano-target effects in ion radiation journal January 2018
Shear-banding Induced Indentation Size Effect in Metallic Glasses journal June 2016
Superplastic nanoscale pore shaping by ion irradiation text January 2018
Superplastic nanoscale pore shaping by ion irradiation text January 2018

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