Effect Of Plasma Nitration Process At Various Temperatures On Wear Behavior Of AISI 4340 Steel

In this study, AISI 4340 (34CrNiMo6) tempered steel was applied to the plasma nitrationprocess at different temperatures and at different periods in order to increase the wear resistanceof the outer surface without decreasing the hardness of the core under 40-44 HRC, and toprevent the component from distortion during heat treatment. The sufficient core strength andtensile stress of some mechanical elements such as mold, drill, U-Drill are required not to fallbelow a certain value. There were five different temperatures (450, 475, 500, 530 and 550 0C)and two different time values (18 and 32 hours) used with these temperatures utilized in thestudy. The study tried to identify the optimum nitriding temperature and time for the limitvalues determined by considering the wear value after nitriding. The wear characteristics of thesamples in dry conditions were also investigated. It was observed that the ideal target values(core 40- 44 HRC) in the nitrided components were reached at 450 0C in 32 hours.

PDF

___

Tong, W. P., Han, Z., Wang, L. M., Lu, J., Lu, K., “Low-Temperature Nitriding Of 38crmoal Steel With A Nanostructured Surface Layer Induced By Surface Mechanical Attrition Treatment”, Surface and Coatings Technology, 202(20): 4957–4963, (2008).
Cemin, F., Echeverrigaray, F. G., Rovani, A. C., Amorim, C. L.G., Basso, R. L. O., Baumvol, I. J. R., et al., “Influence Of Atomic And Mechanical Attrition On Low Temperature Plasma Nitriding Of Ferrous Alloys”, Materials Science and Engineering: A, 527(13,14): 3206–3209, (2010).
Zhao, Y., Yu, B., Dong, L., Du, H., Xiao, J., “Low-Pressure Arc Plasma-Assisted Nitriding Of AISI 304 Stainless Steel”, Surface and Coatings Technology, 210(15): 90–96, (2012).
Laleh, M., Kargar, F., Velashjerdi, M., “Low-Temperature Nitriding Of Nanocrystalline Stainless Steel And Its Effect On Improving Wear And Corrosion Resistance”, Journal of Materials Engineering and Performance, 22(5): 1304–1310, (2012).
Sirin, S. Y., Kaluc, E., “Structural Surface Characterization Of Ion Nitrided AISI 4340 Steel”, Materials and Design, 36: 741–747, (2012).
Sirin, S. Y., Sirin, K., Kaluc, E. “Influence Of Initial Conditions On The Mechanical Behavior Of Ion Nitrided AISI4340 Steel”, Materials Science & Engineering A, 564: 232–241, (2013).
Diaz-Guillen, J. C., Vargas-Gutierrez, G., Granda-Gutierrez, E. E., et al., “Surface Properties of Fe4N Compounds Layer on AISI 4340 Steel Modified by Pulsed Plasma Nitriding”, Journal Of Materials Science & Technolog, 29(3):, 287-290, (2013).
Asadi, Z. S, Mahboubi, F., “Effect Of Component's Geometry On The Plasma Nitriding Behavior Of AISI 4340 Steel”, Materials & Design, 34: 516-521, (2012).
Ribeiro, K. J. B., De Sousa, R. R. M., De Araujo, F. O., et al., “Industrial Application Of AISI 4340 Steels Treated In Cathodic Cage Plasma Nitriding Technique”, Materials Science And Engineering: A, 479(1-2): 142-147, (2008).
Atlassteel.com.au, 18.06.2017
Baranowska, J., “Characteristic Of The Nitride Layers On The Stainless Steel At Low Temperature”, Surface and Coatings Technology, 180–181: 145–149, (2004).
Shen, L., Wang, L., Wang, Y., Wang, C., “Plasma nitriding of AISI 304 austenitic stainless steel with pre-shot peening”, Surface and Coatings Technology, 204(20): 3222–3227, (2010).
Karamış, M. B., Gercekcioğlu, E., “Wear behaviour of plasma nitrided steels at ambient and elevated temperatures”, Wear, 243(1–2), 76–84, (2000).
Tercelj, M., Smolej, A., Fajfar, P., Turk, R., “Laboratory assessment of wear on nitride surfaces of dies for hot extrusion of aluminum”, Tribology International, 40(2): 374-384, (2007).