Impact of local forging parameters on the microstructural evolution and mechanical properties of hot forging steel dies
Year: 2025
Type: article
Abstract: An original multi-scale approach is proposed to understand how local forging parameters influence the evolution of the topography, microstructure and mechanical properties near the tool surface during its service life. To this end, the study is based on observing the geometric elements constituting the tool surface in 3 life states. The mechanical and thermal tribological conditions encountered during forming differ according to the local geometry. Near-surface mechanical properties are determined from nanoindentation tests for the different geometric conditions and wear states. The mechanical property measurements and the microstructure analysis correlate quite well. A significant decrease in hardness and elastic modulus was observed depending on the geometric area studied. Analysis of the microstructure revealed a transition from martensite to a ferrite matrix with globular cementite and fine metal carbonitride precipitates.
Source: Materials Science and Technology
Authors: José Gregorio La Barbera-Sosa, Nasrine Boualem, Mirentxu Dubar, Rudy Dubois, Philippe Moreau, Tarik Sadat, Laurent Dubar, Philippe Bristiel
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4410922860