In-situ deformation testing system for engineering materials at Shanghai synchrotron radiation facility beamline BL12SW

摘要: One in-situ deformation testing system funded by the project of High Energy Photon Source-Testing Facility has been installed at the ultrahard X-ray multifunctional application beamline BL12SW which belongs to the phase-II beamline project in Shanghai synchrotron radiation facility. Aiming to meet the requirements of high energy X-ray diffraction and imaging using the monochromatic light, the in-situ testing system was designed to apply multiple functions including tensile/compression and the simultaneously rotation along the tensile axis, as well as the electric heating of the metallic specimen. A digital video extensometer was utilized to measure the deformation strain avoiding any contact with the specimen. Various investigations such as lattice strain partitioning, texture evolution, contrast imaging under mechanical loading have been verified. Moreover, one electrochemistry hydrogen charging cell was developed to study the structural changes of the material during the in-situ hydrogen charging combined with mechanical loading. This system could be a function expansion of BL12SW and more different types of experiments could be conducted on engineering materials.