Abstract
In this study, a novel high-manganese steel (HMS) was borided at 850, 900 and 950 °C for 2, 4, and 6 h by the pack boriding process. Contrary to previous literature, borided HMS uncommonly exhibited saw-tooth morphology like low alloy steels, and manganese enhanced the boron diffusion. Another striking analysis is that the “egg-shell effect” did not occur. The present study demonstrated the silicon-rich zone for the first time in the literature by EDX mapping. Moreover, the formation mechanism of silicon-rich zones was explained and termed as “compact transfer of silicones (CTS)”. XRD analysis showed the existence of FeB, Fe2B, MnB and SiC phases. The boriding time and temperature increased the thickness of the boride layer from 31.41 μm to 117.65 µm. The hardness of the borided layer ranged from 1120 to 1915 HV0.05. The activation energy of borided HMS was found to be a very low result compared to high alloy steel investigated in the literature. The Daimler-Benz Rockwell-C adhesion test showed that adhesions of borided HMS surfaces are sufficient. The dry sliding wear tests showed that boriding treatment increased the wear resistance of untreated HMS by 5 times. The present study revealed that the boriding process extended the service life of HMS components.
Highlights
High manganese steel (HMS) has been used in automotive [1,2], mining [3,4], and defense industries [5], as well as in oil and slurry pipes [6]
Since no study has been observed in the literature about tribological properties of borided HMS, this study focuses on investigating the wear behavior, adhesion properties and diffusion kinetic of borided HMS at different processing temperatures and holding times
The flat boride morphology appears on the surface of high alloying steel [3,9,24], since the presence of alloying elements in grain boundaries blocks the diffusion of boron atoms from the surface to the inside of the high dition, Sinha reported that manganese flattened out the saw-tooth morphology in carbon steel and prevented the boron diffusion [32]
Summary
High manganese steel (HMS) has been used in automotive [1,2], mining [3,4], and defense industries [5], as well as in oil and slurry pipes [6]. Keddam et al obtained that the plasma paste boriding process significantly increased the wear resistance of AISI 440C steel [23]. Cardenas et al investigated tribological behaviors of D2 and H13 steels They observed that the wear resistance of the borided steels was 13 times higher than that of the unborided substrate [24]. Medvedovski reported that boriding was a unique surface treatment for corrosion and wear resistance of large, long, and complex shaped steels and ferrous alloy tubular components used at the refinery, for oil and gas processing, etc. Since no study has been observed in the literature about tribological properties of borided HMS, this study focuses on investigating the wear behavior, adhesion properties and diffusion kinetic of borided HMS at different processing temperatures and holding times
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
