High-cycle fatigue properties and damage mechanisms of pre-strained Fe-30Mn-0.9C twinning-induced plasticity steel

被引：58
作者：
Wang, B. [1 ,2 ]
Zhang, P. [1 ]
Duan, Q. Q. [1 ]
Zhang, Z. J. [1 ]
Yang, H. J. [1 ]
Pang, J. C. [1 ]
Tian, Y. Z. [1 ]
Li, X. W. [3 ,4 ]
Zhang, Z. F. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Inst Mat, Shenyang 110819, Peoples R China
[3] Northeastern Univ, Dept Mat Phys & Chem, Sch Mat Sci & Engn, Minist Educ, Shenyang 110819, Peoples R China
[4] Northeastern Univ, Key Lab Anisotropy & Text Mat, Minist Educ, Shenyang 110819, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 679卷
基金：
中国国家自然科学基金;
关键词：
Twinning induced plasticity (TWIP) steel; Pre-straining; Tensile strength; Fatigue properties; Twin boundary; Dislocation; STACKING-FAULT ENERGY; ULTRAFINE-GRAINED CU; MN-TWIP STEEL; STRENGTHENING MECHANISMS; MICROSTRUCTURE EVOLUTION; AUSTENITIC STAINLESS; DEFORMATION-BEHAVIOR; METALLIC MATERIALS; TRIP/TWIP ALLOYS; LIFE PREDICTION;
D O I：
10.1016/j.msea.2016.10.043
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tensile and high-cycle fatigue tests of Fe-30Mn-0.9C twinning-induced plasticity (TWIP) steel after 30%, 60% and 70% pre-straining were performed. Meanwhile, the surface damage morphologies of post-fatigue specimens and microstructure evolutions of pre-strained and post-fatigue pre-strained specimens were also investigated. It is found that the fatigue properties of the TWIP steel can be effectively improved through pre-straining, because the pre-straining can change the fatigue strength coefficient and exponent, respectively. The improvement of fatigue strength coefficient may be attributed to the strengthening mechanisms induced by both twin boundaries and dislocations; while the variation of fatigue strength exponent should be resulted from the combined effects of deformation homogeneity and slip reversibility, as well as the internal damages. Furthermore, the detailed mechanisms associated with the variations of fatigue strength coefficient and exponent were discussed. This study may enrich the fundamental knowledge about how to improve the high cycle fatigue properties of TWIP steels.
引用
收藏
页码：258 / 271
页数：14
相关论文
共 55 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]   Enhanced cyclic deformation responses of ultrafine-grained Cu and nanocrystalline Cu-Al alloys [J].
An, X. H. ;
Wu, S. D. ;
Wang, Z. G. ;
Zhang, Z. F. .
ACTA MATERIALIA, 2014, 74 :200-214
[3]   Microstructural evolution and shear fracture of Cu-16 at.% Al alloy induced by equal channel angular pressing [J].
An, X. H. ;
Lin, Q. Y. ;
Wu, S. D. ;
Zhang, Z. F. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (16-17) :4510-4514
[4]  
[Anonymous], SCI REP
[5]   THE DISLOCATION DISTRIBUTION, FLOW STRESS, AND STORED ENERGY IN COLD-WORKED POLYCRYSTALLINE SILVER [J].
BAILEY, JE ;
HIRSCH, PB .
PHILOSOPHICAL MAGAZINE, 1960, 5 (53) :485-&
[6]   Effect of grain and twin boundaries on the hardening mechanisms of twinning-induced plasticity steels [J].
Bouaziz, O. ;
Allain, S. ;
Scott, C. .
SCRIPTA MATERIALIA, 2008, 58 (06) :484-487
[7]   Strain-hardening of twinning-induced plasticity steels [J].
Bouaziz, O. .
SCRIPTA MATERIALIA, 2012, 66 (12) :982-985
[8]   Modelling of TWIP effect on work-hardening [J].
Bouaziz, O ;
Guelton, N .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 319 :246-249
[9]   Caliber-rolled TWIP steel for high-strength wire rods with enhanced hydrogen-delayed fracture resistance [J].
Chun, Young Soo ;
Lee, Junmo ;
Bae, Chul Min ;
Park, Kyung-Tae ;
Lee, Chong Soo .
SCRIPTA MATERIALIA, 2012, 67 (7-8) :681-684
[10]   Ultra high strength FeMn TWIP steels for automotive safety parts [J].
Cornette, D. ;
Cugy, R. ;
Hildenbrand, A. ;
Bouzekri, M. ;
Lovato, G. .
REVUE DE METALLURGIE-CAHIERS D INFORMATIONS TECHNIQUES, 2005, 102 (12) :905-918
123456