Effect of heat treatments on the microstructure and wear behaviour of a selective laser melted maraging steel

Abstract

This study applied classical and intercritical heat treatments to maraging steel (MS1) samples produced with standard additive manufacturing (AM) production parameters. The effects of heat treatment parameters on the microstructure-phase changes of the material were investigated by optical microscope (OM), scanning electron microscope (SEM), Electron Dispersion Spectroscopy (EDX), and X-ray diffraction analysis (XRD) techniques. Likewise, microhardness and dry sliding wear tests were performed to determine the relationship of heat treatment parameters (especially intercritical heat treatment) to the mechanical properties and wear of the material. The results reveal that the intercritical heat treatment is exciting for the AM/MS1 material.

Determination of the construction material for phononic band gap structures by tribological performance

“…Applying wear test to 316L and 420 steels, the wear resistance of specimens dropped in almost half and one third, respectively. The increased resistance against wear can be associated with dominant chemical compounds, such as chromium carbide, iron carbide, nickel chromium, austenitic and martensitic structures, and hardness [37][38][39][40][41][42][43][44]. In the lubricated test condition, lower viscosity (L1) and higher viscosity (L2) lubricants are used, and test results showed that lower viscosity lubricant enabled lower wear rate and higher viscosity lubricant cannot lowered the wear rate.…”

Surface Properties and Tribological Behavior of Additively Manufactured Components: A Systematic Review

“…An elastohydrodynamic lubrication (EHL) regime was achieved with simultaneous cryogenic and minimum quantity lubrication, which is why the tribological behavior was best there. The influence of heat treatment parameters was investigated in [141] for maraging steel produced using SLM. Hardness was improved in all cases, and it was shown that an intercritical heat treatment is promising.…”