Micro and macro-mechanical behavior of a transformation-induced plasticity steel developed by thermomechanical processing followed by quenching and partitioning

被引:31
作者
Karam-Abian, M. [1 ]
Zarei-Hanzaki, A. [1 ]
Abedi, H. R. [1 ]
Heshmati-Manesh, S. [2 ]
机构
[1] Univ Tehran, Coll Engn, Sch Met & Mat Engn, Complex Lab Hot Deformat & Thermomech Proc High P, Tehran, Iran
[2] Univ Tehran, Coll Engn, Sch Met & Mat Engn, Tehran, Iran
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 651卷
关键词
Quenching and partitioning; Nanoindentation; Thermomechanical processing; Mechanical properties; X-ray diffraction; RETAINED AUSTENITE; CARBON; MICROSTRUCTURE; MARTENSITE; STABILITY; BAINITE; FERRITE;
D O I
10.1016/j.msea.2015.10.116
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A low-alloyed transformation induced plasticity steel was subjected to thermomechanical processing (TMP) followed by quenching and partitioning treatment to achieve a desired combination of the strength and ductility. The developed microstructures were precisely analyzed, and the mechanical responses of individual micro-constituents were studied by nanoindentation using a reliable scanning probe microscopy. The results indicate that the characteristics of the constituent phases (i.e., the lath martensite, blocky fresh martensite and the retained austenite) were dictated by the prior TMP. The occurrence of dynamic recrystallization and the formation of equiaxed-shape fine austenite grains during TMP would provide fast diffusion track for carbon to diffuse through the untransformed austenite. The carbon partitioning from martensite to the surrounding austenite ensures the austenite stabilization and was identified as the major factor for martensite softening at micro-scale level. The room temperature mechanical properties were studied via shear punch and tensile testing methods. The obtained superior mechanical properties, the ultimate tensile stress of similar to 1400 MPa and shear elongation to fracture of similar to 19% were justified considering the proper work hardening behavior of the material. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:233 / 240
页数:8
相关论文
共 42 条
[1]  
A. Standard, 2010, STANDARD PRACTICE CO, V3, P1
[2]   Characterization and modeling of mechanical behavior of quenching and partitioning steels [J].
Arlazarov, A. ;
Bouaziz, O. ;
Masse, J. P. ;
Kegel, F. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 620 :293-300
[3]   The structure of nitrogen-supersaturated ferrite produced by ball milling [J].
Aufrecht, J. ;
Leineweber, A. ;
Foct, J. ;
Mittemeijer, E. J. .
PHILOSOPHICAL MAGAZINE, 2008, 88 (12) :1835-1855
[4]   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
[5]   Carbon partitioning to austenite from martensite or bainite during the quench and partition (Q&P) process: A critical assessment [J].
Clarke, A. J. ;
Speer, J. G. ;
Miller, M. K. ;
Hackenberg, R. E. ;
Edmonds, D. V. ;
Matlock, D. K. ;
Rizzo, F. C. ;
Clarke, K. D. ;
De Moor, E. .
ACTA MATERIALIA, 2008, 56 (01) :16-22
[6]   Effect of fresh martensite on the stability of retained austenite in quenching and partitioning steel [J].
De Knijf, Dorien ;
Petrov, Roumen ;
Foejer, Cecilia ;
Kestens, Leo A. I. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 615 :107-115
[7]   Quenching and partitioning martensite - A novel steel heat treatment [J].
Edmonds, D. V. ;
He, K. ;
Rizzo, F. C. ;
De Cooman, B. C. ;
Matlock, D. K. ;
Speer, J. G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :25-34
[8]   An investigation into the room temperature mechanical properties of nanocrystalline austenitic stainless steels [J].
Eskandari, Mostafa ;
Zarei-Hanzaki, Abbas ;
Abedi, Hamid Reza .
MATERIALS & DESIGN, 2013, 45 :674-681
[9]   Evaluation of mechanical properties using shear-punch testing [J].
Guduru, RK ;
Darling, KA ;
Kishore, R ;
Scattergood, RO ;
Koch, CC ;
Murty, KL .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 395 (1-2) :307-314
[10]   Retained austenite characteristics in thermomechanically processed Si-Mn transformation-induced plasticity steels [J].
Hanzaki, AZ ;
Hodgson, PD ;
Yue, S .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (11) :2405-2414