About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Neutron and X-ray Scattering in Materials Science
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Presentation Title |
Micromechanical Response of Nitrocarburized Steel Studied by In-situ X-ray Microdiffraction during Nanoindentation |
Author(s) |
Albin Stormvinter, Shun Yu, Melina da Silva, Gabriel Spartacus, Peter Hedstrom, Anton Davydok |
On-Site Speaker (Planned) |
Peter Hedstrom |
Abstract Scope |
Nitrocarburizing of steel produces a complex surface microstructure that can be subdivided into a compound layer (CL) on the surface and a diffusion zone (DZ) below. The CL generally constitute of two types of iron nitride phases, ε and γ’, whereas in the DZ ferrite is strengthened by solid solution and small nitride- and carbide-precipitates. Nitrocarburizing can also be combined with post oxidation to yield a few microns of oxide to further improve corrosion properties. The nitrocarburized steel components will benefit from improved fatigue, wear, friction and corrosion properties. However, the understanding of the relationship between the nitrocarburizing process, obtained microstructure and properties is not well established. By using in-situ nanoindentation and scanning synchrotron x-ray microbeam diffraction we have interrogated the micromechanical response of two different types of nitrocarburized steel surfaces with different phase constitutions. The roles of ε-phase- and γ’-phase on the micromechanical properties of the components are discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Mechanical Properties, Surface Modification and Coatings |