Researchers at the School of Engineering publish an open access work in the prestigious journal METALS

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Researchers at the School of Engineering publish an open access work in the prestigious journal METALS

One of the most important applications of special steels and the hot forging process is the manufacturing of automotive components such as transmission gears, which are normally deformed at very high temperatures (~1,100 °C). As part of the research activities at the School of Engineering related to Structural Advanced Materials, Roberto González-Ojeda PhD and Octavio Lozada-Flores PhD, full and part time researchers respectively, published the paper “High-Temperature Precipitation Design-of-Experiments Simulation in Low-Alloy Cr–Mo–Ni Hot Forging Steel” (Metals 2021, Volume 11, Issue 7, 1054). 

 

This work, which may be downloaded from the Metals MDPI web page, is also a collaboration with the Materials Institute at UNAM and with the CEIT Research Center at San Sebastián, Spain, and presents experimental tests performed at different facilities, combined with computer finite element simulations and Thermocalc phase transition simulations. Furthermore, the analysis of results includes statistical data analysis in the form of Design of Experiments –DoE-, resulting in a Data Science application of research activities. Furthermore, the research was supported by the FFIUP funding project.

 

The work analyses a deformed steel part, considering hardness at different zones of the geometry, along with Electronic Microscopy microstructures of previous austenite grains and lamellar martensitic spacing. Also, Thermocalc simulations of different precipitation phases are combined with Design of Experiments in order to detect sensibility and significant variables in order to better understand and improve the efficiency of these production processes.