The High-Temperature Scanning Indentation (HTSI) method (Tiphéne et al. in J Mater Res 36(12):2383–2396, 2021) allows for the characterization of material mechanical properties quasi-continuously over a large temperature range in 1-day experiments, based on a cycle with a constant maximum load applied regardless of the temperature. For materials ex...
Waste waterglass foundry sand (WwFS) is a solid waste generated by the foundry industries that is commonly discarded in landfills and has urgent needs for disposal and recycling. Accordingly, this study suggests using WwFS as aggregates source for the preparation of alkali-activated slag mortars (AASM). Two different pre-wetting methods (24 h pre-w...
International audience
Titanium and its alloys combine an important mechanical anisotropy and a high capacity to dissolve oxygen. The detailed evolution of the elastic compliance of titanium as a function of its oxygen content is only partially known, despite its importance in structural applications. Here, high speed nanoindentation mapping (HSNM) was conducted on a gra...
Hall-Petch scaling breaks down at grain sizes below approximate to 10 nm at room temperature. Although mechanisms such as diffusion creep, grain rotation, and grain boundary sliding have been suggested, the dominant deformation mechanism in the Hall-Petch breakdown or grain boundary (GB) weakening regime is not well understood. GB weakening regime ...
Nanoindentation is a promising tool for advancing the estimation of single crystal elastic constants in multiphase materials. In this study, a novel protocol is presented that couples high-speed nanoindentation mapping with the Vlassak and Nix’s model and Bayesian inference simulations to statistically estimate the elastic constants of cubic materi...
Published in Acta biomaterialia
Dental enamels of different species exhibit a wide variety of microstructural patterns that are attractive to mimic in bioinspired composites to simultaneously achieve high stiffness and superior toughness. Non-human enamel types, however, have not yet received the deserved attention and their mechanical behaviour is largely unknown. Using nanoinde...
Magnetic Pulse Welding (MPW) is a high-velocity impact welding technique that allows the joining of dissimilar materials such as aluminium and copper. Welding should be produced under the appropriate conditions: impact velocity (200-500 m.s-1) and collision angle (10-30°). The formation mechanisms leading to the welding creation are not very clear....
International audience
Elementary deformation mechanisms have been investigated in a single-crystalline Cr2AlC MAX phase. Plasticdeformation has been induced at room temperature by spherical nanoindentation, with a crystal orientationchosen to minimize basal slip and to promote local crystal reorientation. The combination of Atomic ForceMicroscopy (AFM) surface observati...
