Refined Model for the Stress-Strain Curve of Austenitic Stainless-Steel Materials at Elevated Temperatures
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 4
Abstract
Based on the room-temperature and high-temperature test method (steady state and transient state), a series of mechanical property tensile tests was carried out on S30408 (AISI304) austenitic stainless-steel materials. There were 72 specimens in total, including 8 specimens at room temperature, 28 specimens for a high-temperature steady-state test, and 36 specimens for a high-temperature transient-state test. Through the experimental investigation, the mechanical properties of stainless steel at room and elevated temperatures were obtained. The stress-strain curves of stainless steel at elevated temperatures were given and the development laws in a large range of strain were revealed. The tensile test results show that (1) with increasing temperature, the mechanical properties (elastic modulus, yield strength, and ultimate strength) of stainless steel continuously decrease; (2) the nominal yield strength of stainless steel in corner areas is higher than that in flat areas at the same temperature; and (3) the test loading rate has a significant effect on the stress-strain curve of stainless steel at elevated temperatures; with a higher loading rate, all strength indexes of stainless steel at elevated temperatures are improved. In this paper, a theoretical model for stress-strain curves of stainless steel at elevated temperatures, containing five mechanical property parameters, was developed by theoretical derivation, and the accuracy of the theoretical model was verified by experimental results. Next, the high-temperature reduction coefficients of the five mechanical property parameters in the theoretical model were analyzed by numerical simulation, their calculation formulas were fitted, and a reliability analysis was carried out on the five parameters using SPSS. Finally, a complete theoretical model of the stress-strain curve of stainless steel at elevated temperatures was proposed that can accurately predict the mechanical properties of austenitic stainless steel at elevated temperatures.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (51378105, 51878146, and 51608234) and National Key Research and Development Program of China (2017YFC0703802). The research was sponsored by Jiangsu Provincial Qing Lan Project, Jiangsu Provincial Six Talent Peaks Project (JZ-001), and Jiangsu Provincial Natural Science Foundation (BK20160534). These sources of financial support are gratefully acknowledged.
References
Abdella, K. 2009. “Explicit full-range stress–strain relations for stainless steel at high temperatures.” J. Constr. Steel Res. 65 (4): 794–800. https://doi.org/10.1016/j.jcsr.2008.09.001.
Afshan, S., B. Rossi, and L. Gardner. 2013. “Strength enhancements in cold-formed structural sections. Part I: Material testing.” J. Constr. Steel Res. 83 (Apr): 177–188. https://doi.org/10.1016/j.jcsr.2012.12.008.
Ala-Outinen, T. 1996. Fire resistance of austenitic stainless steel Polarit 725 (EN1.4301) and Polarit 761 (EN1.4571). Espoo, Finland: Technical Research Centre of Finland.
Atchison, C. S., and J. A. Miller. 1942. Tensile and pack compressive tests of some sheets of aluminum alloy, 1025 carbon steel, and chromium-nickel steel. Washington, DC: National Advisory Committee for Aeronautics.
CECS (China Association for Engineering Construction Standardization). 2015. Technical specification for stainless steel structure. Beijing: China Planning Press.
CEN (European Committee for Standardization). 2005a. Eurocode 3: Design of steel structures. Part 1–2: General rules—Structural fire design. EN 1993-1-2. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2005b. Eurocode 3: Design of steel structures. Part 1–4: General rules—Supplementary rules for stainless steels. EN 1993-1-4. Brussels, Belgium: CEN.
Chen, J., and B. Young. 2006. “Stress-strain curves for stainless steel at elevated temperatures.” Eng. Struct. 28 (2): 229–239. https://doi.org/10.1016/j.engstruct.2005.07.005.
Chen, W., and J. H. Ye. 2012. “Steady state experimental investigation of G550 high strength cold-formed steel material at elevated temperatures.” [In Chinese.] China Civ. Eng. J. 45 (6): 33–42.
Euro Inox/SCI. 2017. Design manual for structural stainless steel. 4th ed. Oxford, UK: European Stainless Steel Development Association and Steel Construction Institute.
Fan, S. G., X. F. Ding, W. J. Sun, L. Y. Zhang, and M. J. Liu. 2016b. “Experimental investigation on fire resistance of stainless steel columns with square hollow section.” Thin Walled Struct. 98 (1): 196–211. https://doi.org/10.1016/j.tws.2015.02.003.
Fan, S. G., B. B. He, X. F. Xia, H. Y. Gui, and M. J. Liu. 2016a. “Fire resistance of stainless steel beams with rectangular hollow section: Experimental investigation.” Fire Saf. J. 81 (Apr): 17–31. https://doi.org/10.1016/j.firesaf.2016.01.013.
Fan, S. G., Y. Li, Z. N. Li, M. J. Liu, and Y. L. Han. 2017. “Experimental investigation of fire resistance of axially compressed stainless steel columns with constraints.” Thin Walled Struct. 120 (Nov): 46–59. https://doi.org/10.1016/j.tws.2017.08.020.
Gardner, L. 2002. A new approach to stainless steel structural design. London: Imperial College.
Gardner, L., A. Insausti, K. T. Ng, and M. Ashraf. 2010. “Elevated temperature material properties of stainless steel alloys.” J. Constr. Steel Res. 66 (5): 634–647. https://doi.org/10.1016/j.jcsr.2009.12.016.
Montanari, A., and G. Zilli. 2007. Work package 4: Properties at elevated temperatures. RFCS Project ‘Stainless Steel in Fire’. Rome: Centro Sviluppo Materiali.
Nie, Z. S. 2012. Studies on the correlation of cold-rolled hardness and strength of austenitic stainless steel sheet with the cold rolling deformation. [In Chinese.] Taiyuan, China: Taiyuan Univ. of Technology.
Olsson, A. 2001. Stainless steel plasticity—Material modelling and structural applications. Luleå, Sweden: Luleå Univ. of Technology.
SAC (Standardization Administration of the People’s Republic of China). 2010. Metallic materials—Tensile testing—Part 1: Method of test at room temperature. GB/T 228.1. Beijing: China Standard Press.
Sakumoto, Y., T. Nakazato, and A. Matsuzaki. 1996. “High-temperature properties of stainless steel for building structures.” J. Struct. Eng. 122 (4): 399–406. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:4(399).
Sun, W. J. 2016. Investigation on fire resistance of stainless steel columns with axial restraint under eccentric compression loads. [In Chinese.] Nanjing, China: Southeast Univ.
Xia, X. F. 2014. Theoretical analysis and experimental research on fire resistance of stainless steel beam. [In Chinese.] Nanjing, China: Southeast Univ.
Xu, F., H. B. Liu, Z. H. Chen, H. Q. Li, and X. L. Feng. 2019. “In-fire and postfire mechanical properties of duplex stainless steel S22053.” J. Mater. Civ. Eng. 31 (10): 04019210. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002842.
Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 14, 2019
Accepted: Aug 26, 2019
Published online: Jan 23, 2020
Published in print: Apr 1, 2020
Discussion open until: Jun 23, 2020
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