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| Influence of Strain Rate on Hot Ductility of Austenitic Stainless Steel Cr17Mn6Ni4Cu2N Slab |
| HOU Guoqing ZHU Liang** BIAN Hongxia TIAN Yanlong |
| (State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050) |
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Cite this article:
HOU Guoqing ZHU Liang** BIAN Hongxia TIAN Yanlong. Influence of Strain Rate on Hot Ductility of Austenitic Stainless Steel Cr17Mn6Ni4Cu2N Slab. Chinese Journal of Materials Research, 2013, 27(1): 70-74.
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Abstract ABSTRACT The influence of strain rate on the hot ductility of Cr17Mn6Ni4Cu2N has been investigated by hot tensile tests. Results show that: in slab shell, the microstructure is dendrite ferrite distributing in austenite, and reduction of area (RA) decreases as strain rate increasing from 0.1 to 10 s-1, the positions of cracks nucleus are changed from δ ferrite dendrites to austenite grain boundary; in slab core, the microstructure is ferrite distributing on austenite grain boundary, and RA increases with strain rate, the positions of cracks nucleus are changed from grain boundary ferrite to the co-existence of grain boundary ferrite and austenite grain boundary. As the materials deform at higher strain rate, the strength can be improved both in austenite and ferrite, which will transfer the cracks nucleating positions from ferrite to austenite grain boundary. In shell the higher strain rate strengthens the stress concentration of austenite grain boundary, leading to the decrease of ductility; in core, the higher strain rate decreases the stress concentration of ferrite, resulting in the increase of ductility.
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1 F. Tehovnik, F. Vodopivec, L. Kosec, Hot ductility of austenitic stainless steel with a solidification structure, Materiali in Tehnologije, 40(4), 129(2006)
2 M. H. Parsa, M. N. Ahmadabadi, H.Shirazi, Evaluation of microstructure change and hot workability of high nickel high strength steel using wedge test, Journal of Materials Processing Technology, 199(1-3), 304(2008)
3 S. Grobeiber, S. Ilie, C. Poletti, Influence of strain rate on hot ductility of a V-Microalloyed steel slab, Steel Research International, 83(5), 445(2012)
4 H. J. McQUEEN, Elevated-temperature deformation at forming rates of 10-2 to 102 s-1, Metallurgical and Materials Transactions A, 33(2), 345(2002)
5 B. Mintz, M. Shaker, D. N. Crowther, Hot ductility of an austenitic and a ferritic stainless steel, Materials Science and Technology, 13(3), 243(1997)
6 B. Mintz, A. Cowley, R. Abushusha, Hot ductility curve of an austenitic stainless steel and importance of dynamic recrystallization in determining ductility recovery at high temperature, Materials Science and Technology, 15(10), 1179(1999)
7 N. D. Ryan, H. J. McQueen, Comparison of dynamic softening in 301, 304, 316 and 317 stainless steels, High Temperature Technology, 8(3), 185(1990)
8 N. D. Ryan, H. J. McQueen, J. J. Jonas, The deformation behavior of types 304, 316, and 317 austenitic stainless steels during hot torsion, Canadian Metallurgical Quarterly, 22(3), 369(1983)
9 H. J. McQueen, S. Yue, N. D. Ryan, Fry, Hot working characteristics of steels in austenitic state, Journal of Materials Processing Technology, 53(1-2), 293(1995)
10 S. P. Tan, Z. H. Wang, S. C. Cheng, Processing maps and hot workability of Super304H austenitic heat-resistant stainless steel, Materials Science and Engineering A, 517(1-2), 312(2009)
11 P. Bilmes, A. Gonzalez, C. Llorente, M. Solari, Effect of δ ferrite solidification morphology of austenitic stainless steel weld metal on properties of welded joints, Welding International, 10(10), 797(1996)
12 A. D. Schino, J. M. Kenny, M. G. Mecozzi, Development of high nitrogen-low nickel-18%Cr austenitic stainless steels, Journal of Materials Science, 35(19), 4803(2000)
13 J. N. Tarboton, L. M. Matthews, A. Sutcliffe, The hot workability of Cromanite, a high nitrogen austenitic stainless steel, Materials Science Forum, 318-320, 777(1999)
14 F. Czerwinski, J. Y. Cho, The edge-cracking of AISI 304 stainless steel during hot-rolling, Journal of Materials Science, 34(19), 4727(1999)
15 Z. H. Wang, W. T. Fu, S. H. Sun, Effect of preheating temperature on surface cracking of high nitrogen CrMn austenitic stainless steel, Journal of Materials Science and Techology, 26(9), 798(2010)
16 A. Pinol-Juez, A. Iza-Mendia, I. Gutierrez, δ/γ inteface boundary sliding as a mechanism for strain accommodation during hot deformation in a duplex stainless steel, Metallurigical and Materials Transaction A, 31(6), 1671(2000)
17 D. Jorge-Badiola, A. Iza-Mendia, Study by EBSD of the development of the substructure in a hot deformed 304 stainless steel, Materials Science and Engineering A, 394(1-2), 445(2005)
18 REN Jianbin, SONG Zhigang, ZHENG Wenjie, XIANG Jinzhong, Hot deformation behavior of super austenitic stainless steel 254SMo, Journal of Iron and Steel Research, 24(5), 41(2012)
(任建斌, 宋志刚, 郑文杰, 项金钟, 254SMo超级奥氏体不锈钢的热变形行为, 钢铁研究学报, 24(5), 41(2012))
19 C. M. Martin, R. N. Eric, L. B. Elliot, K. George, Hot working and recrystallization of as-cast 316L, Metallurgical and Materials Transactions A, 34(8), 1683(2003)
20 C. M. Martin, R. N. Eric, L. B. Elliot, K. George, Hot working and recrystallization of as-cast 317L, Metallurgical and Materials Transactions A, 34(12), 3021(2003)
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