Données de réplication pour : A mechanical TiAl/TiAlN multinanolayer coating model based on microstructural analysis and nanoindentation

ANR-22-CE08-0008 MULTI-NANO-ULHC project: Although nanocrystalline metal nitride coatings are currently used for their outstanding properties such as hardness and wear resistance, improving these properties remains a challenge. Most of them are based on nitrides such as TiN or CrN and their mechanical properties can be improved by combining them with another compound in a ternary nitride system such as (Ti,M)N. Today, the (Ti,Al)N system can be considered as a model system for thin coatings and it will be the starting point of our work. To move towards better performing coatings, one solution consists in depositing TiAl/TiAlN metal/nitride multilayered coatings using a sputtering technique (Reactive Gas Pulsing Process RGPP) which allows to easily modulate the stacking of the coating and to take advantage of the properties of the nitride, and the crack resistance of the interfaces. Recent works carried out by the project team have shown that the period of the stacking, the thicknesses of each component nanolayers and their interfaces strongly impact the hardness particularly when a superlattice effect is evidenced in the TiAl/TiAlN crystallographic structure. In order to save time and raw resources, the actual project aims to establish a MULTI-scale methodology based on experimentation and modeling to allow the rapid design of NANOstratificated Ultra-Hard Coatings for tools or mechanical parts. This methodology, circular and multi-scale, will allow reducing the number of deposited coatings and their characterization and then saving time and raw resources. It is based on the synergy between the expertise of mechanics, chemists and physicists covering the whole chain from the instrument, the acquisition of experimental data, modeling, simulation and updating, until results analysis and exploitation. The method will loop measurement by nanoindentation and associated finite element models (FEM) and validation by associated magnetron sputtering deposition of coatings and structural characterization (EDX, XRD, XRR, TEM, HRSTEM, EELS, orientation mapping, etc..). A FEM updating method will allow optimizing the design of the solution coatings. Especially, these datasets concern the indentation P(h) curves of different monolithic TiAl and TiAlN coatings and multi-layered coatings with period 10 and 50 nm. They enable the reproduction of data from figure 2b and 3a of the article “A mechanical TiAl/TiAlN multinanolayer coating model based on microstructural analysis and nanoindentation”