In-situ neutron diffraction of engineering materials
Uniaxial deformation is the most widely used mechanical test procedure for metals. For this purpose at POLDI there is a 30kN deformation rig which can be used for tensile/compression/low cycle fatigue experiments.
Many applications of metals involve complex strain paths, calling for devices that can apply multiaxial loading conditions. At POLDI a new multi-axial deformation rig (Zwick Roell) has been recently installed. It allows performing in-situ in-plane biaxial loading along two orthogonal axes or combining uni-axial tensile/compressive deformation with torsion.
Main publicationsNeutron and X-ray diffraction study of residual and internal stress evolution in pearlitic steel during cold drawing
M Kriska, J Tacq, K Van Acker, M Seefeldt, S Van Petegem
5th European Conference on Neutron Scattering 340, 012101 (2012).
In situ room temperature tensile deformation of a 1% CrMoV bainitic steel using synchrotron and neutron diffraction
MA Weisser, AD Evans, S Van Petegem, SR Holdsworth, H Van Swygenhoven
Acta Materialia 59, 4448 (2011).
Plasticity of nanostructured Cu-Nb-based wires: Strengthening mechanisms revealed by in situ deformation under neutrons
V Vidal, L Thilly, S Van Petegem, U Stuhr, F Lecouturier, PO Renault, H Van Swygenhoven
Scripta Materialia 60, 171 (2009).
POLDI: Materials Science and Engineering Instrument at SINQ
A Evans, S Van Petegem, H Van Swygenhoven
Neutron News 20 (3), 17 (2009).
In situ Neutron Diffraction Study of Internal Micro-Stresses Developed by Plastic Elongation in < 110 > Textured BCC Wires
JG Sevillano, J Alkorta, D Gonzalez, S Van Petegem, U Stuhr, H Van Swygenhoven
Advanced Engineering Materialis 10, 951 (2008).
Plasticity of multiscale nanofilamentary Cu/Nb composite wires during in situ neutron diffraction: Codeformation and size effect.
V. Vidal, L. Thilly, S. Van Petegem, U. Stuhr, F. Lecouturier, P. O. Renault, and H. Van Swygenhoven.
Applied Physics Letters 88, 191906 (2006)