Letter abstract
Nature Materials 4, 33 - 36 (2004)
Published online: 19 December 2004 | doi:10.1038/nmat1266
Subject Categories: Metals and alloys | Glasses | Characterisation and analytical techniques
Measuring strain distributions in amorphous materials
Henning F. Poulsen1, John A. Wert1, Jörg Neuefeind2, Veijo Honkimäki3 & Mark Daymond4
A number of properties of amorphous materials including fatigue, fracture and component performance are governed by the magnitude of strain fields around inhomogeneities such as inclusions, voids and cracks. At present, localized strain information is only available from surface probes such as optical or electron microscopy1, 2. This is unfortunate because surface and bulk characteristics in general differ. Hence, to a large extent, the assessment of strain distributions relies on untested models. Here we present a universal diffraction method for characterizing bulk stress and strain fields in amorphous materials and demonstrate its efficacy by work on a material of current interest in materials engineering: a bulk metallic glass3, 4, 5. The macroscopic response is shown to be less stiff than the atomic next-neighbour bonds because of structural rearrangements at the scale of 4–10 Å. The method is also applicable to composites comprising an amorphous matrix and crystalline inclusions.
- Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark
- SNS, Oak Ridge National Laboratory, PB 2008, MS 6474, Oak Ridge, Tennessee, 37922, USA
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France
- ISIS Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, UK
Correspondence to: Henning F. Poulsen1 e-mail: henning.friis.poulsen@risoe.dk
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
NEWS AND VIEWS
Amorphous materials Characterizing amorphous strainNature Materials News and Views (01 Jan 2005)
RESEARCH
X-ray microdiffraction study of growth modes and crystallographic tilts in oxide films on metal substratesNature Materials Article (01 Jul 2003)
Probing of bonding changes in B 2 O 3 glasses at high pressure with inelastic X-ray scatteringNature Materials Article (01 Nov 2005)
Rotation of orbital stripes and the consequent charge-polarized state in bilayer manganitesNature Materials Letter (01 Dec 2006)
Pressure-induced amorphization of crystalline silicaNature Letters to Editor (07 Jul 1988)
See all 10 matches for Research
