Influences of Nb-microalloying on microstructure and mechanical properties of Fe-25Mn-3Si-3Al TWIP steel

被引：51
作者：
Li, Dejun [1 ,2 ]
Feng, Yaorong [1 ,2 ]
Song, Shengyin [1 ,2 ]
Liu, Qiang [1 ,2 ]
Bai, Qiang [1 ,2 ]
Wu, Gang [1 ,2 ]
Lv, Neng [1 ,2 ]
Ren, Fengzhang [3 ]
机构：
[1] CNPC Tubular Goods Res Inst, Xian 710077, Peoples R China
[2] CNPC, Key Lab Petr Tubular Goods Engn, Xian 710077, Peoples R China
[3] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China
来源：
MATERIALS & DESIGN | 2015年 / 84卷
关键词：
High-Mn TWIP steel; Nb-microalloying; Mechanical properties; Precipitation strengthening; MANGANESE AUSTENITIC STEEL; DEFORMATION-BEHAVIOR; TENSILE PROPERTIES;
D O I：
10.1016/j.matdes.2015.06.092
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Fe-25Mn-3Si-3Al TWIP steel was microalloyed by niobiumin this paper, and the appropriate heat treatment and cold rolling processes were drafted in order to improve the poor yield strength of the steel. The results show that the yield strength of the steel increases from 320 MPa to 445 MPa, and the tensile strength increases from 680 MPa to 795 MPa, but the uniform elongation decreases from 65% to 55%. Nb addition can strongly hinder the growth of recrystallized grains, moreover Nb atoms react with C atoms to form nanoscale NbC precipitations, and these precipitations can block the dislocation motion, and then the yield strength and initial work hardening ability of Fe-25Mn-3Si-3Al steel is clearly improved. Furthermore, the strain-induced twinning is still a major deformation mechanism for the Nb-microalloying TWIP steel, and the twinning induced plasticity (TWIP) effect ensures a satisfactory ductility for the steel. Finally, the modified TWIP steel obtains a better match between the strength and plasticity by the joint action of precipitation strengthening and TWIP effect. (C) 2015 Elsevier Ltd. All rights reserved.
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收藏
页码：238 / 244
页数：7
相关论文
共 23 条
[1]   Correlations between the calculated stacking fault energy and the plasticity mechanisms in Fe-Mn-C alloys [J].
Allain, S ;
Chateau, JP ;
Bouaziz, O ;
Migot, S ;
Guelton, N .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 387 :158-162
[2]  
BHADESHIA HKD, 2006, STEELS MICROSTRCT PR
[3]   Strain hardening rate sensitivity and strain rate sensitivity in TWIP steels [J].
Bintu, Alexandra ;
Vincze, Gabriela ;
Picu, Catalin R. ;
Lopes, Augusto B. ;
Gracio, Jose J. ;
Barlat, Frederic .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 629 :54-59
[4]   High manganese austenitic twinning induced plasticity steels: A review of the microstructure properties relationships [J].
Bouaziz, O. ;
Allain, S. ;
Scott, C. P. ;
Cugy, P. ;
Barbier, D. .
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2011, 15 (04) :141-168
[5]   On the stress dependence of partial dislocation separation and deformation microstructure in austenitic stainless steels [J].
Byun, TS .
ACTA MATERIALIA, 2003, 51 (11) :3063-3071
[6]   Tensile deformation behavior of high manganese austenitic steel: The role of grain size [J].
Dini, G. ;
Najafizadeh, A. ;
Ueji, R. ;
Monir-Vaghefi, S. M. .
MATERIALS & DESIGN, 2010, 31 (07) :3395-3402
[7]   Internal friction study on fcc/hcp martensitic transformations in thermomechanically treated Fe-28Mn-6Si-5Cr-0.53Nb-0.06C (mass%) alloys [J].
Dong, Z. ;
Sawaguchi, T. ;
Kikuchi, T. ;
Yin, F. ;
Ogawa, K. ;
Sahu, P. ;
Kajiwara, S. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 442 (1-2) :404-408
[8]   High strength Fe-Mn-(Al, Si) TRIP/TWIP steels development -: properties -: application [J].
Grässel, O ;
Krüger, L ;
Frommeyer, G ;
Meyer, LW .
INTERNATIONAL JOURNAL OF PLASTICITY, 2000, 16 (10-11) :1391-1409
[9]   The influence of aluminum on hot deformation behavior and tensile properties of high-Mn TWIP steels [J].
Hamada, A. S. ;
Karjalainen, L. P. ;
Somani, M. C. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 467 (1-2) :114-124
[10]   Mechanical behavior and martensitic transformation of an Fe-Mn-Si-Al-Nb alloy [J].
Huang, B. X. ;
Wang, X. D. ;
Rong, Y. H. ;
Wang, L. ;
Jin, L. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :306-311
123