Effect of cryogenic rolling and annealing on the microstructure evolution and mechanical properties of 304 stainless steel
- 159 Downloads
Metastable 304 austenitic stainless steel was subjected to rolling at cryogenic and room temperatures, followed by annealing at different temperatures from 500 to 950°C. Phase transition during annealing was studied using X-ray diffractometry. Transmission electron microscopy and electron backscattered diffraction were used to characterize the martensite transformation and the distribution of austenite grain size after annealing. The recrystallization mechanism during cryogenic rolling was a reversal of martensite into austenite and austenite growth. Cryogenic rolling followed by annealing refined grains to 4.7 μm compared with 8.7 μm achieved under room-temperature rolling, as shown by the electron backscattered diffraction images. Tensile tests showed significantly improved mechanical properties after cryogenic rolling as the yield strength was enhanced by 47% compared with room-temperature rolling.
Keywordsstainless steel cryogenic rolling annealing microstructural evolution mechanical properties recrystallization
Unable to display preview. Download preview PDF.
This work was financially supported by the National Key Project of Research and Development Program of China (No. 2016YFB0300801), the National Natural Science Foundation of China (No. 51401016), and State Key Laboratory for Advanced Metals and Materials of China.
- P.L. Sun, Y.H. Zhao, J.C. Cooley, M.E. Kassner, Z. Horita, T.G. Langdon, E.J. Lavernia, and Y.T. Zhu, Effect of stacking fault energy on strength and ductility of nanostructured alloys: an evaluation with minimum solution hardening, Mater. Sci. Eng. A, 525(2009), No. 1-2, p. 83.CrossRefGoogle Scholar
- Y.F. Shen, X.M. Zhao, X. Sun, Y.D. Wang, and L. Zuo, Ultrahigh strength of ultrafine grained austenitic stainless steel induced by accumulative rolling and annealing, Scripta Mater., 2014. http://doi.org/10.1016/j.scriptamat.2014.05.001.Google Scholar
- B. Roy, N.K. Kumar, P.M.G. Nambissan, and J. Das, Evolution and interaction of twins, dislocations and stacking faults in rolled a-brass during nanostructuring at sub-zero temperature, AIP Adv., 4(2014), No. 6, art. No. 067101.Google Scholar
- P.Y. Li, Y. Xiong, L.F. Chen, F.Z. Ren, and X.G. Wang, Effect of cryorolling on microstructure and mechanical properties of AISI 310S stainless steel, Trans. Mater. Heat Treat., 36(2015), No. 3, p. 112.Google Scholar
- Y. Xiong, J.B. Wang, L.F. Chen, Y. Lu, F.Z. Ren, L.L. Zhang, and J.L. Ma, Effect of annealing process on microstructure and mechanical properties of cryorolled AISI310S austenite stainless steel, Trans. Mater. Heat Treat., 37(2016), No. 4, p. 101.Google Scholar
- J.T. Shi, L.G. Hou, J.R. Zuo, L. Lu, H. Cui, and J.S. Zhang, Quantitative analysis of the martensite transformation and microstructure characterization during cryogenic rolling of a 304 austenitic stainless steel, Acta Metall. Sin., 52(2016), No. 8, p. 945.Google Scholar
- B.D. Cullity and S.R. Stock, Elements of X-ray Diffraction, 3rd Ed., Prentice Hall, New Jersey, 2001, p. 40.Google Scholar
- X.M. Huang and T. Jie, Material Analysis Test Method, National Defense Industry Press, Beijing, 2008, p. 206.Google Scholar
- Z.Y. Xu, Martensite Transformation and Martensite, Science Press, Beijing, 1980, p. 479.Google Scholar
- W.M. Mao and X.B. Zhao, Recrystallization and Grain Growth, Metallurgical Industry Press, Beijing, 1994, p. 218.Google Scholar