Effect of Strain Rate on Hot Ductility of Cast Low Ni Austenitic Stainless Steel

HOU Guo-qing; ZHU Liang; TIAN Yan-long; BIAN Hong-xia

Materials and Mechanical Engineering > 2014 > 38(2): 19-23.

HOU Guo-qing, ZHU Liang, TIAN Yan-long, BIAN Hong-xia. Effect of Strain Rate on Hot Ductility of Cast Low Ni Austenitic Stainless Steel[J]. Materials and Mechanical Engineering, 2014, 38(2): 19-23.

Citation:

HOU Guo-qing, ZHU Liang, TIAN Yan-long, BIAN Hong-xia. Effect of Strain Rate on Hot Ductility of Cast Low Ni Austenitic Stainless Steel[J]. Materials and Mechanical Engineering, 2014, 38(2): 19-23.

Citation:

HOU Guo-qing, ZHU Liang, TIAN Yan-long, BIAN Hong-xia. Effect of Strain Rate on Hot Ductility of Cast Low Ni Austenitic Stainless Steel[J]. Materials and Mechanical Engineering, 2014, 38(2): 19-23.

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Effect of Strain Rate on Hot Ductility of Cast Low Ni Austenitic Stainless Steel

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Received Date: November 24, 2013

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Abstract

Abstract

The influence of strain rate on the hot ductility of two kinds of cast austenitic stainless steels, Cr15Mn9Cu2NiN and Cr17Mn6Ni4Cu2N, has been studied in high temperature tensile tests. Results show that the microstructure of Cr15Mn9Cu2NiN steel was fully austenite, but residual δ ferrites distributed in the boundaries and inside of austenite grains in Cr17Mn6Ni4Cu2N steel. There was little influence on the hot ductility of Cr15Mn9Cu2NiN steel as increasing strain rate from 0.1 s-1 to 10 s-1, because the increased stress concentration on grain boundary was eliminated by the reducing of grain boundary sliding when increasing the strain rate. In the microstructure of Cr17Mn6Ni4Cu2N steel there was lots of interface between austenite and ferrite phase which generated dislocations as the materials deformed at higher strain rate, improving the strength of austenite and ferrite, then decreasing the stress concentration on ferrite, so the reduction of area was increased by more than 10%.
- austenitic stainless steel,
- strain rate,
- hot ductility,
- δ ferrite

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[1]	ZOU D N, HAN Y, YAN D N, et al. Hot workability of 00Cr13Ni5Mo2 supermartensitic stainless steel［J］.Materials and Design,2012,32:4443-4448.
[2]	钟政烨, 盛光敏. 200系奥氏体不锈钢热轧裂纹的产生原因及其工艺改进［J］.机械工程材料,2010,34(4):79-83.
[3]	MINTZ B, COWLEY A, ABUSHUSHA R. Hot ductility curve of an austenitic stainless steel and importance of dynamic recrystallization in determining ductility recovery at high temperature［J］.Materials Science and Technology,1999,15(10):1179-1185.
[4]	MCQUEEN H J. Elevated-temperature deformation at forming rates of 10-2 to 102 s-1［J］.Metallurgical and Materials Transactions: A,2002,33(2):345-360.
[5]	MINTA B, SHAKER M, CROWTHER D N. Hot ductility of an austenitic and a ferritic stainless steel［J］.Materials Science and Technology,1997,13(3):243-249.
[6]	SIMON G, SERGIU I, CECILIA P, et al. Influence of strain rate on hot ductility of a V-microalloyed steel slab［J］.Steel Research International,2012,83(5):445-455.
[7]	BYUN J, SUK K, SEO S C. Effects of strain rate and remelting on hot ductility of continuous casting slab［J］.Journal of the Korean Institute of Metals and Materials,2005,43(3):188-194.
[8]	RYAN N D, MCQUEEN H J. Comparison of dynamic softening in 301, 304, 316 and 317 stainless steels［J］.High Temperature Technology,1990,8(3):185-200.
[9]	RYAN N D, MCQUEEN H J, JONAS J J. The deformation behavior of types 304, 316, and 317 austenitic stainless steels during hot torsion［J］.Canadian Metallurgical Quarterly,1983,22(3):369-378.
[10]	TAN S P, WANG Z H, CHENG S C, Processing maps and hot workability of Super304H austenitic heat-resistant stainless steel［J］.Materials Science and Engineering:A,2009,517(1/2):312-315.
[11]	MCQUEEN H J, YUE S, RYAN N D, et al. Hot working characteristics of steels in austenitic state［J］.Journal of Materials Processing Technology,1995,53:293-310.
[12]	BILMES P, GONZALES A, LLORENT A, et al. Effect of δ ferrite solidification morphology of austenitic stainless steel weld metal on properties of welded joints［J］.Welding International,1996,10(10):797-808.
[13]	SCHINO A D, KENNY J M, MECOZZI M G. Development of high nitrogen-low nickel-18%Cr austenitic stainless steels［J］.Journal of Materials Science,2000,35(19):4803-4808.
[14]	TARBOTON J N, MATTHEWS L M, SUTCLIFFE A. The hot workability of Cromanite, a high nitrogen austenitic stainless steel［J］.Materials Science Forum,1999,318/320:777-784.
[15]	CZERWINSKI F, CHO J Y. The edge-cracking of AISI 304 stainless steel during hot-rolling［J］.Journal of Materials Science,1999,34(19):4727-4735.
[16]	BEVIS H. Deformation substructure and recrystallization［J］.Materials Science Forum,2007,558/559:13-22.
[17]	MARTIN C M, ERIC R N, ELLIOT L B, et al. Hot working and recrystallization of as-cast 316L［J］.Metallurgical and Materials Transactions: A,2003,34(8):1683-1703.
[18]	侯国清,朱亮,马蓉. 奥氏体不锈钢 Cr15Mn9Cu2Ni1N 连铸坯壳层的热塑性［J］.材料科学与工艺,2011,19(1):91-94.
[19]	朱亮,张孝平, 侯国清.Cr15Mn9Cu2Ni1N奥氏体不锈钢的热变形本构特性［J］.塑性工程学报,2009,16(5):96-100.

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