skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The effect of helium implantation on the deformation behaviour of tungsten: X-ray micro-diffraction and nanoindentation

Journal Article · · Scripta Materialia
 [1];  [1];  [1];  [2];  [2];  [1]
  1. Univ. of Oxford, Oxford (United Kingdom)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)

Here, the effect of helium-implantation-induced defects on deformation behaviour is examined by comparing spherical nano-indents in unimplanted and helium-implanted regions of a tungsten single crystal. Helium-implantation increases hardness and causes large pileups. 3D-resolved X-ray micro-diffraction uniquely allows examination of the complex lattice distortions beneath specific indents. In the ion-implanted material we find reduced lattice rotations and residual strains due to indentation, indicating a more confined plastic zone. Together, our observations suggest that helium-induced defects initially act as efficient obstacles to dislocation motion, but are weakened by the subsequent passage of dislocations, causing a reduction in work hardening capacity.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Engineering and Physical Sciences Research Council (EPSRC); USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1466395
Journal Information:
Scripta Materialia, Vol. 146, Issue C; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (31)

Phase diagram and lattice instability in tungsten–rhenium alloys journal April 2000
Recent progress in research on tungsten materials for nuclear fusion applications in Europe journal January 2013
Controlling Factors for the Brittle-to-Ductile Transition in Tungsten Single Crystals journal November 1998
In situ study of self-ion irradiation damage in W and W–5Re at 500 °C journal May 2013
Neutron-induced transmutation effects in W and W-alloys in a fusion environment journal March 2011
An integrated model for materials in a fusion power plant: transmutation, gas production, and helium embrittlement under neutron irradiation journal August 2012
Temperature dependence of helium-implantation-induced lattice swelling in polycrystalline tungsten: X-ray micro-diffraction and Eigenstrain modelling journal October 2015
Surface modification of tungsten and tungsten–tantalum alloys exposed to high-flux deuterium plasma and its impact on deuterium retention journal January 2013
A description of bubble growth and gas release of helium implanted tungsten journal April 2009
Trapping and release of helium in tungsten journal September 2011
Effect of Alloy Composition & Helium ion-irradiation on the Mechanical Properties of Tungsten, Tungsten-Tantalum & Tungsten-Rhenium for Fusion Power Applications journal January 2013
Lattice swelling and modulus change in a helium-implanted tungsten alloy: X-ray micro-diffraction, surface acoustic wave measurements, and multiscale modelling journal May 2015
SRIM – The stopping and range of ions in matter (2010)
  • Ziegler, James F.; Ziegler, M. D.; Biersack, J. P.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 268, Issue 11-12 https://doi.org/10.1016/j.nimb.2010.02.091
journal June 2010
First temperature stage evolution of irradiation-induced defects in tungsten studied by positron annihilation spectroscopy journal May 2008
Multiscale modeling of crowdion and vacancy defects in body-centered-cubic transition metals journal August 2007
Self-interstitial atom defects in bcc transition metals: Group-specific trends journal January 2006
Correcting for contact area changes in nanoindentation using surface acoustic waves journal February 2017
Some indentation and sliding experiments on single crystal and polycrystalline materials journal March 2002
Orientation dependence of nanoindentation pile-up patterns and of nanoindentation microtextures in copper single crystals journal May 2004
Deformation microstructure of neutron-irradiated pure polycrystalline metals journal August 2004
In situ nanocompression testing of irradiated copper journal June 2011
The three-dimensional X-ray crystal microscope: A new tool for materials characterization journal July 2004
X-ray micro-beam characterization of lattice rotations and distortions due to an individual dislocation journal November 2013
Spherical nanoindentation stress–strain curves journal May 2015
Determination of the effective zero-point and the extraction of spherical nanoindentation stress–strain curves journal August 2008
Automated indexing for texture and strain measurement with broad-bandpass x-ray microbeams journal November 1999
Modelling self trapping and trap mutation in tungsten using DFT and Molecular Dynamics with an empirical potential based on DFT journal December 2014
Temperature dependence of the radiation damage microstructure in V–4Cr–4Ti neutron irradiated to low dose journal October 1998
A Model of “Lattice” Hardening in Irradiated Copper Crystals with the External Characteristics of “Source” Hardening journal January 1965
Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology journal January 2004
Mechanical properties of ion-implanted tungsten–5 wt% tantalum journal December 2011

Cited By (4)

Recent advances in characterising irradiation damage in tungsten for fusion power journal November 2019
Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten journal December 2019
Orientation-dependent indentation response of helium-implanted tungsten journal June 2019
Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten journal January 2019

Figures / Tables (6)


Similar Records

Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten
Journal Article · Wed Dec 04 00:00:00 EST 2019 · Scientific Reports · OSTI ID:1466395

Helium-implantation-induced lattice strains and defects in tungsten probed by X-ray micro-diffraction
Journal Article · Mon Nov 05 00:00:00 EST 2018 · Materials & Design · OSTI ID:1466395

The role of helium implantation induced vacancy defect on hardening of tungsten
Journal Article · Fri Mar 28 00:00:00 EDT 2014 · Journal of Applied Physics · OSTI ID:1466395