Effect of volume fraction and mechanical stability of austenite on ductility of medium Mn steel

被引：17
作者：
Chen, Si-lian [1 ]
Cao, Zhao-xi [2 ]
Wang, Chang [1 ]
Huang, Chong-xiang [3 ]
Ponge, Dirk [4 ]
Cao, Wen-quan [1 ]
机构：
[1] CISRI, Beijing 100081, Peoples R China
[2] Univ Sydney, Sci Fac, Sydney, NSW 2006, Australia
[3] Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Sichuan, Peoples R China
[4] Max Planck Inst Iron Res, D-40237 Dusseldorf, Germany
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2019年 / 26卷 / 11期
基金：
中国国家自然科学基金;
关键词：
TRIP effect; Ductility; Phase transformation; Austenite volume fraction; Mechanical stability; INDUCED PLASTICITY STEELS; STACKING-FAULT ENERGY; RETAINED AUSTENITE; DEFORMATION-BEHAVIOR; TRIP/TWIP STEELS; TWIP-STEEL; TRANSFORMATION; STRENGTH; MICROSTRUCTURE; TEMPERATURE;
D O I：
10.1007/s42243-019-00267-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A hot-rolled medium Mn (0.2C5Mn) steel is annealed at 650 degrees C to produce an ultrafine-grained duplex microstructure with different austenite volume fractions by austenite reverted transformation (ART) annealing, and the orientation relationship strictly obeys K-S orientation relationship before deformation. Tensile tests are carried out in a temperature range from -196 to 400 degrees C to examine the effects of the austenite volume fraction and the deformation temperature on the tensile properties and the austenite stability. Microstructural observations reveal that the metastable austenite gradually transformed into alpha -martensite, which is controlled by the deformation strain, the temperature and the austenite volume fraction. Both strain hardening behavior and ductility of the studied steel are dependent on austenite volume fraction and deformation temperature significantly. The stress-strain curves of ART-annealed 0.2C5Mn steel assume an S shape and a very large work hardening rate of about 10 GPa is obtained at liquid nitrogen deformation temperature. Based on the experimental data, a quantitative relation is proposed to describe the ductility dependence on both the austenite volume fraction and its mechanical stability.
引用
收藏
页码：1209 / 1218
页数：10
相关论文
共 44 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]   Analysis of the martensitic transformation at various scales in TRIP steel [J].
Berrahmoune, MR ;
Berveiller, S ;
Inal, K ;
Moulin, A ;
Patoor, E .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2) :304-307
[3]   Cold-rolled, high-strength sheet steels for auto applications [J].
Bleck, W .
JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 1996, 48 (07) :26-30
[4]   High-energy X-ray diffraction study on the temperature-dependent mechanical stability of retained austenite in low-alloyed TRIP steels [J].
Blonde, R. ;
Jimenez-Melero, E. ;
Zhao, L. ;
Wright, J. P. ;
Bruck, E. ;
van der Zwaag, S. ;
van Dijk, N. H. .
ACTA MATERIALIA, 2012, 60 (02) :565-577
[5]   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
[6]   Driving Force and Logic of Development of Advanced High Strength Steels for Automotive Applications [J].
Bouaziz, Olivier ;
Zurob, Hatem ;
Huang, Mingxin .
STEEL RESEARCH INTERNATIONAL, 2013, 84 (10) :937-947
[7]   Austenite stability and deformation behavior in a cold-rolled transformation-induced plasticity steel with medium manganese content [J].
Cai, Z. H. ;
Ding, H. ;
Misra, R. D. K. ;
Ying, Z. Y. .
ACTA MATERIALIA, 2015, 84 :229-236
[8]   Microstructures and mechanical properties of the third generation automobile steels fabricated by ART-annealing [J].
Cao WenQuan ;
Wang Chang ;
Wang CunYu ;
Shi Jie ;
Wang MaoQiu ;
Dong Han ;
Weng YuQing .
SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2012, 55 (07) :1814-1822
[9]   The 3rd Generation Automobile Sheet Steels Presenting with Ultrahigh Strength and High Ductility [J].
Cao, Wenquan ;
Shi, Jie ;
Wang, Chang ;
Wang, Cunyu ;
Xu, Le ;
Wang, Maoqiu ;
Weng, Yuqing ;
Dong, Han .
ADVANCED STEELS: THE RECENT SCENARIO IN STEEL SCIENCE AND TECHNOLOGY, 2011, :209-227
[10]   Effect of microstructure on retained austenite stability and work hardening of TRIP steels [J].
Chiang, J. ;
Lawrence, B. ;
Boyd, J. D. ;
Pilkey, A. K. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (13-14) :4516-4521
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