Effects of Nitrogen on Microstructure, Mechanical Properties and Corrosion Behavior in Nickel-Free Austenitic Stainless Steels

Document Type : Original Articles

Authors

• Seyyed Mohsen Salehi ¹
• Shahram Kheirandish ²
• Seyyed Mehdi Abbasi ³

¹ University Science and Technology

² Iran University Science and Technology

³ Malek Ashtar

10.22067/ma.v0i29.45769

Abstract

Different amounts of nitrogen were added to nickel-free high manganese austenitic stainless steels with addition of a nitrided ferroalloy. The microstructure was evaluated by optical microscopy and the mechanical properties were determined by macro-hardness and tensile tests. The corrosion behavior was evaluated by electrochemical impedance spectroscopy and polarization. The results showed that the microstructure of high nitrogen and low nitrogen steels were austenite and ferrite and austenite, respectively. The hardness, yield strength and ultimate tensile strength of the steels increased with increasing nitrogen content. In addition, corrosion current densities decreased and corrosion potentials shifted to more positive values with increasing nitrogen content.

Keywords

• Austenitic Stainless Steels
• Nitrogen
• Mechanical properties
• corrosion

---

References

1. Cobb H.M., "The History of Stainless Steel”, ASM International, (2010).
2. Bhadeshia H.,Honeycombe R,, “Steel: Microstructure and Properties”, 3rd ed., Butterworth-Heinemann, (2006).
3. Gavriljuk V.G., Berns H., “High Nitrogen Steels: Structure, Properties, Manufacture, Applications”, Springer Berlin Heidelberg, (1999).
4. Winters G.L., Nutt M.J., “Stainless Steels for Medical and Surgical Applications”, ASTM International, (2003).
5. Yang K., Ren Y., Wan P., "High nitrogen nickel-free austenitic stainless steel: A promising coronary stent material," Science China Technological Sciences, Vol. 55, pp. 329-340, (2011).
6. Fontana M.G., “Corrosion Engineering”, McGraw-Hill Book Company, (1985).
7. Menzel J., Kirschner W., Stein G., "High nitrogen containing Ni-free austenitic steels for medical applications," ISIJ international, Vol. 36, (1996).
8. Uggowitzer P.J., Magdowski R., Speidel M.O., "Nickel Free High Nitrogen Austenitic Steels," ISIJ International, Vol. 36, pp. 901-908, (1996).
9. Balachandran G., Bhatia M.L., Ballal N.B., Rao P.K., "Some Theoretical Aspects on Designing Nickel Free High Nitrogen Austenitic Stainless Steels," ISIJ International, Vol. 41, pp. 1018-1027, (2001).
10. Klueh R.L., Maziasz P.J., Lee E.H., "Manganese as an austenite stabilizer in Fe-Cr-Mn-C steels," Materials Science and Engineering A, Vol. 102, pp. 115-124, (1988).
11. Thomann U.I., Uggowitzer P.J., "Wear–corrosion behavior of biocompatible austenitic stainless steels," Wear, Vol. 239, pp. 58-48, (2000).
12. Walter M.J., "stainless steel for medical implants," Advanced Materials & Processes, Vol. 164, pp. 84-86, (2006).
13. Jiang Z.-h., Zhang Z.-r., Li H.-b., Li Z., Qi-feng M., "Microstructural evolution and mechanical properties of aging high nitrogen austenitic stainless steels," International Journal of Minerals, Metallurgy, and Materials, Vol. 17, pp. 729-736, (2010).
14. Fullman R.L., Fisher J.C., "Formation of annealing twins during grain growth," Journal of Applied Physics, Vol. C, pp. 1350-1355, (1951).
15. گلعذار م.ع., “اصول و کاربرد عملیات حرارتی فولادها”، ویرایش دوم، دانشگاه صنعتی اصفهان، (1385).
16. Vanderschaeve F., Taillard R., Foct J., "Discontinuous precipitation of Cr2N in a high nitrogen, chromium-manganese austenitic stainless steel," Journal of Materials Science, Vol. 30, pp. 6035-6046, (1995).
17. Berns H., Gavriljuk V., Riedner S., “High Interstitial Stainless Austenitic Steels”, Springer Berlin Heidelberg, (2013).
18. Talha M., Behera C.K., Sinha O.P., "Effect of nitrogen and cold working on structural and mechanical behavior of Ni-free nitrogen containing austenitic stainless steels for biomedical applications," Materials Science and Engineering C, Vol. 47, pp. 196-203, (2015).
19. Akbarpour M.R., Ekrami A., "Effect of ferrite volume fraction on work hardening behavior of high bainite dual phase (DP) steels," Materials Science and Engineering A, Vol. 477, pp. 306-310, (2008).
20. Abbaschian R., Abbaschian L., Reed-hill R.E., “Physical Metallurgy Principles”, 4th ed., Cengage Learning, (2008).
21. Ohkubo N., Miyakusu K., Uematsu Y., Kimura H., "Effect of Alloying Elements on the Mechanical Properties of the Stable Austenitic Stainless Steel," ISIJ International, Vol. 34, pp. 764-772, (1994).
22. Talha M., Behera C.K., Sinha O.P., "In-vitro long term and electrochemical corrosion resistance of cold deformed nitrogen containing austenitic stainless steels in simulated body fluid," Materials Science and Engineering C, Vol. 40, pp. 455-466. (2014),
23. Shih H., “Corrosion Resistance”, InTech, (2012).
24. Lai J.K.L., Shek C.H., Lo K.H., “Stainless Steels: An Introduction and Their Recent Developments”, Bentham Science Publishers, (2012).
25. Kumar A., "Development and Characterization of Nickel Free Duplex Stainless Steel," Master of Science Thesis, Materials Science and Engineering, Thapar University, (2008).