Effect of Heat Treatment Process on Mechanical Properties and Microstructure of S280

Abstract:

The effect of solution temperature and aging temperature on mechanical properties and microstructure of the new ultrahigh strength stainless steel S280 was investigated by heat treatment process experiment. The results showed that the optimal heat treatment process was as follows: heating to 1080 °C，holding for a hour, and quenching in oil; cooling to -73 °C, holding for 2 hour, and warming in air to room temperature; heating to 540~550 °C, holding for 4 hour, and cooling in air. Choosing this heat treatment process, the steel can get good coordination between strength and toughness. Analyzed by HREM, the steel had desirable microstructures, which were fine lath martensite matrix with high density dislocation and finely dispersed precipitate strengthening phase, and film-like reversed austenite precipitated from the boundary of martensite.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 344-349
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.344
• Online since: June 2021
• Authors: Ye Qin Zhang*, Ping Zhong, Huan Feng Li, Wen Qiang Zhang
• Keywords: Coordination Between Strength, Heat Treatment, Mechanical Properties, Microstructure, S280, Toughness

References

[1] J. Li, F. Guo, Z. Li, et al, Journal of Iron and Steel Research, 14 (2007) 254.

[2] P.Zhong. The microstructure, property and corrosion behavior of ultra-high strength steel, Science Press, Beijing, 2014 53.

[3] C. J. Kuehmann, G. B. Olson, H. J. Jou, Nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structral steels. USA Patent 7160399, (2007).

[4] C.Kuehmann, B.Tufts, P.Trester. Computational design for ultra high-strength alloy, Advanced Materials and Processes.166 (2008) 37-40.

[5] J. W. Martin, T. Kosa. Ultra-high-strength precipitation-hardenable stainless steel and strip made therefrom. USA Patent 6630103, (2003).

[6] P.Prevey, N.ayaraman, N. Ontko, et al, Mechanical Suppression of SCC and Corrosion Fatigue Failures in 300M Steel Landing Gear. Proceedings of the USAF Aircraft Structural Integrity Program Conference. Lamdba Technologies, Cincinnati, OH. (2004).

[7] E. U. Lee. Surface Treatment Effects on Aermet 100 Steel: Part 1. Shot Peening Effect on Corrosion and Fatigue of Aermet 100 Steel. Patuxent River: Naval Air Systems Command Department of the Navy, (1994).

[8] C. Kern. New Corrosion-resistant, ultra-high-strength steel. Fastener Technology International. (2010).

[9] Carpenter Technology Corporation, QuesTek Innovations LLC. A license agreement for Ferrium S53 alloy. Stainless Steel Focus. 2007 3 60.

[10] Steel, Corrosion-Resistant, Bars, and Forgings 10Cr-5.5Ni-14Co-2Mo-1W (0.19-0.23C). SAE. AMS 5922-2008. (2008).

DOI: 10.4271/ams5922b

[11] Innovations in specialty steels. Advanced Materials and Processes. (2004) 26-35.

[12] W. Xu, J. P. E, Rivera-Di Az-del-Castillo, et al, Designing nanoprecipitation strengthened UHS stainless steels combining genetic algorithms and thermodynamics. Computational Materials Science. 44 (2008) 678-689.

DOI: 10.1016/j.commatsci.2008.05.003

[13] J. W. G Garrison, J. L Maloney, Lanthanum additions and the toughness of ultra-high strength steels and the determination of appropriate lanthanum additions, Materials Science & Engineering A. 403 (2005) 299-310.

DOI: 10.1016/j.msea.2005.05.021

[14] D. Figueroa, M. J. Robinson, The effects of sacrificial coatings on hydrogen embrittlement and re-embrittlement of ultra high strength steels, Corrosion Science. 50 (2008) 1066-1079.

DOI: 10.1016/j.corsci.2007.11.023

[15] J. Y. Zhong, Y. Q. Zhang, Y. F. Han. New Phase Precipitated from the New Type of Ultrahigh Strength Stainless Steel S280, Rare Metal Materials And Engineering. 48 (2019) 116-122.

[16] P. Zhong, Y. Q. Zhang, J. Y. Zhong,et al. A new of structural material S280, Science & Technology Review. 33 (2015) 59-62.