Impact-Sliding Wear Behaviour of Nitrided H13 Steel Tool Steels

Abstract:

In the scope of this study, quenched and tempered H13 steel samples were subjected to conventional (CN) and low temperature (LTN) gas nitriding in a fluidized bed reactor. Structural examinations revealed that surfaces of the CN sample were covered with about 1-2 µm thick compound layer (CL) with an underlying ~30 µm thick nitrogen diffusion zone (NDZ), while outer surface of the LTN sample consisted of ~25 µm thick NDZ. The surface hardness values were measured as 1320 HV_0.1 for LTN sample and 1220 HV_0.1 for CN sample. Under impact sliding conditions, wear mechanisms of the CN and LTN samples were determined as “oxidation + fatigue” at RT and “plastic deformation” at 600 °C. As a general trend CN sample exhibited better impact sliding wear resistance compared to LTN sample both at RT and 600 °C.

• Periodical: Key Engineering Materials (Volume 813)
• Pages: 417-422
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.813.417
• Online since: July 2019
• Authors: Ezgi Akyıldız, Mert Altay, Faiz Muhaffel, Seçkin Özkurt, Erdem Atar, H. Çimenoğlu*
• Keywords: Gas Nitriding, High Temperature Wear, Impact-Sliding Test, Tool Steel, Wear Mechanisms

References

[1] G. Roberts, G. Krauss, and R. Kennedy, Tool Steels, fifth ed., ASM International, (1998).

[2] L. Barrallier, Thermochemical Surface Engineering of Steels, Elsevier Ltd., (2015).

[3] H-J. Spies, Corrosion behavior of nitrided, nitrocarburised and carburized steels, in: E. J. Mittemeijer and M. A.J. Somers (eds.) Thermochemical Surface Engineering of Steels Elsevier Ltd., 2015, pp.267-309.

DOI: 10.1533/9780857096524.2.267

[4] R. Tulsyan and R. Shivpuri, Computer Modeling of Wear in Extrusion and Forging of Automotive Exhaust Valves, Journal of Materials Engineering and Performance, 4 (1995) 162-165.

DOI: 10.1007/bf02664109

[5] A. Ramalhoa, P. Kapsab, Effect of temperatures up to 400 °C on the impact-sliding of valve-seat contacts, Wear 267 (2009) 777–780.

DOI: 10.1016/j.wear.2008.12.081

[6] S. Hashmi, Comprehensive Materials Finishing, first ed. Elsevier, (2016).

[7] S.S. Akhtar, A.F.M. Arif, B.S. Yilbas, and A.K. Sheikh, Influence of Surface Preparation on the Kinetics of Controlled Gas-Nitrided AISI H13 Steels Used in Extrusion Dies, Journal of Materials Engineering and Performance 19 (2010) 347-355.

DOI: 10.1007/s11665-009-9496-5

[8] Y. Chen, X. Nie, Study on fatigue and wear behaviors of a TiN coating using an inclined impact-sliding test, Surface & Coatings Technology 206 (2011) 1977-1982.

DOI: 10.1016/j.surfcoat.2011.09.032