USE OF NEUTRON DIFFRACTOMETRY FOR THE CHARACTERIZATION OF MICROSTRUCTURAL TRANSFORMATIONS FOLLOWING HIGH RATE DEFORMATION OF Ti6Al4V BY LSP
The proposers have experimentally succeeded to introduce compressive residual stresses fields in Ti6Al4V with peak values in the range of 500 MPa and in material ranges beyond 1 mm depth that have conferred the treated specimens with clearly observable mechanical properties enhancement. The proposers conducted a previous study with the double purpose of, first, to confirm the order of magnitude of the RSs fields induced in the material by LSP processes of a given intensity in rapport to the values measured by the ASTM E837-13 technique and, second, to confirm the relative stability of such RSs fields upon aggressive thermal cycles. On the basis of these results, an additional degree of insight into the process is required by increasing the depth of exploration until at least few mm depth in order to observe the RSs recovery and the knowledge of the triaxial behaviour or the RSs fields. Neutron diffraction is hence the appropriate experimental approach to continue with. The correlation of experimental results with the available numerical simulation tools is critical in order to predict safely the mechanical behaviour of the treated samples along different directions.
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OCANA Jose L.; ANGULO IGNACIO; BELTRAN Angel; CABEZA Sandra and Francisco Cordovilla Baro. (2020). USE OF NEUTRON DIFFRACTOMETRY FOR THE CHARACTERIZATION OF MICROSTRUCTURAL TRANSFORMATIONS FOLLOWING HIGH RATE DEFORMATION OF Ti6Al4V BY LSP. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-274
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