Abstract
Equal channel angular pressing (ECAP) of granular pearlite high carbon steel was carried out at room temperature via the Bc route. The microstructure evolution was investigated by means of scanning and transmission electron microscopy, and the mechanical properties of granular pearlite steel were measured by tensile and microhardness testing. After four passes, the microstructure was obviously refined. An ultrafine microduplex structure with 400 nm equiaxed ferrite grains and 200 nm cementite particles were formed. The yield strength, ultimate tensile strength, microhardness, and the ratio of the yield to tensile strength increased with the number of ECAP passes, however, the elongation slightly reduced. The tensile fracture morphology changes gradually from ductile fracture to ductile and quasi-cleavage mixed fracture.
Similar content being viewed by others
References
J.T. Wang, J.X. Huang, Z.Z. De, Z. Zhang, X.C. Zhao, Microstructure Transformation in a Pearlite Steel During Equal Channel Angular Pressing. Ultrafine Grained Materials, 2004, p 673–678.
Y. Ivanisenko, W. Lojkowski, R.Z. Valiev, and H.J. Fecht, The Mechanism of Formation of Nanostructure and Dissolution of Cementite in a Pearlitic Steel During High Pressure Torsion, Acta Mater., 2003, 51, p 5555–5570
C. Kammerhofer, A. Hohenwarter, S. Scheriau, H.P. Brantner, and R. Pippan, Influence of Morphology and Structural Size on the Fracture Behavior of a Nanostructured Pearlitic Steel, Mater. Sci. Eng. A, 2013, 585, p 190–196
Z.G. Liu, X.J. Hao, K. Masuyama, K. Tsuchiya, M. Umemoto, and S.M. Hao, Nanocrystal Formation in a Ball Milled Eutectoid Steel, Scripta Mater., 2001, 44, p 1775–1779
Y. Xu, Z.G. Liu, M. Umemoto, and K. Tsuchiya, Formation and Annealing Behavior of Nanocrystalline Ferrite in Fe-0.89C Spheroidite Steel Produced by Ball Milling, Metall. Mater. Trans. A, 2002, 33, p 2195–2203
T. Maki and T. Furuhara, Microstructure and Mechanical Property of Ultra-Fine (Ferrite + Cementite) Duplex Structure in High Carbon Steel, Mater. Sci. Forum, 2003, 426–432, p 19–26
Y. Xiong, S.H. Sun, Y. Li, J. Zhao, Z.Q. Lv, D.L. Zhao, Y.Z. Zheng, and W.T. Fu, Effect of Warm Cross-Wedge Rolling on Microstructure and Mechanical Property of High Carbon Steel Rods, Mater. Sci. Eng. A, 2006, 431, p 152–157
T.T. He, Y. Xiong, F.Z. Ren, Z.Q. Guo, and A.A. Volinsky, Microstructure of Ultra-Fine-Grained High Carbon Steel Prepared by Equal Channel Angular Pressing, Mater. Sci. Eng. A, 2012, 535, p 306–310
Y. Xiong, T.T. He, Z.Q. Guo, H.Y. He, F.Z. Ren, and A.A. Volinsky, Mechanical Properties and Fracture Characteristics of High Carbon Steel After Equal Channel Angular Pressing, Mater. Sci. Eng. A, 2013, 563, p 163–167
F. Wetscher, R. Stock, and R. Pippan, Changes in the Mechanical Properties of a Pearlitic Steel Due to Large Shear Deformation, Mater. Sci. Eng. A, 2007, 445–446, p 237–243
A. Belyakov, T. Sakai, H. Miura, R. Kaibyshev, and K. Tsuzaki, Continuous Recrystallization in Austenitic Stainless Steel After Large Strain Deformation, Acta Mater., 2002, 50, p 1547–1557
J.Z. Lu, J.W. Zhong, K.Y. Luo, L. Zhang, F.Z. Dai, K.M. Chen, Q.W. Wang, J.S. Zhong, and Y.K. Zhang, Micro-structural Strengthening Mechanism of Multiple Laser Shock Processing Impacts on AISI, 8620 Steel, Mater. Sci. Eng. A, 2011, 528, p 6128–6133
Compilations Group of “Mechanical properties of metals”, Mechanical Properties of Metals, Mechanical Industry Press, Beijing, 1982, p. 230 (in Chinese)
C.S. Zheng, L.F. Li, W.Y. Yang, and Z.Q. Sun, Microstructure Evolution and Mechanical Properties of Eutectoid Steel with Ultrafine or Fine (Ferrite + Cementite) Structure, Mater. Sci. Eng. A, 2014, 599, p 16–24
C.S. Zheng, L.F. Li, W.Y. Yang, and Z.Q. Sun, Enhancement of Mechanical Properties by Changing Microstructure in the Eutectoid Steel, Mater. Sci. Eng. A, 2012, 558, p 158–161
L.F. Li, W.Y. Yang, and Z.Q. Sun, Microstructure Evolution of a Pearlitic Steel During Hot Deformation of Undercooled Austenite and Subsequent Annealing, Metall. Mater. Trans. A, 2008, 39, p 624–635
Y.T. Ding, B. Liu, T.B. Guo, Y. Hu, H.L. Li, and J.Y. Zhao, Dislocation Density Variation and Mechanical Properties of Pure Copper Via Equal Channel Angular Pressing, Chin. J. Nonferrous Met., 2014, 24, p 2057–2064 ((in Chinese))
Acknowledgments
This work was supported by the National Natural Science Foundation of China under Grant No. 50801021 and 51201061, and by the program for the Young Key Teachers in the Henan Province under Grant No. 2011GGJS-070, and the Henan Province Program for Science and Technology Innovation Excellent Talents (144200510009).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Xiong, Y., He, T., Li, P. et al. Microstructure and Mechanical Properties of Granular Pearlite Steel After Equal Channel Angular Pressing. J. of Materi Eng and Perform 24, 2665–2669 (2015). https://doi.org/10.1007/s11665-015-1553-7
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11665-015-1553-7