Softening kinetics in Nb-microalloyed TRIP steels with increased Mn content

被引：24
作者：
Grajcar, Adam [1 ]
Kuziak, Roman [2 ]
机构：
[1] Silesian Tech Univ, Inst Engn Mat & Biomat, Ul Konarskiego 18A, PL-44100 Gliwice, Poland
[2] Inst Ferrous Metallurgy, PL-44100 Gliwice, Poland
来源：
ADVANCED MANUFACTURING TECHNOLOGY, PTS 1-3 | 2011年 / 314-316卷
关键词：
TRIP steel; dynamic recrystallization; static recrystallization; dynamic recovery; compression test; softening kinetics; manganese steel; Nb microalloying; HOT DEFORMATION; MICROSTRUCTURES;
D O I：
10.4028/www.scientific.net/AMR.314-316.119
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two 5Mn-1.5Al TRIP steels with and without Nb microaddition were developed in the present study. The steels contain bainite, martensite, interlath retained austenite and martensite-austenite islands. The paper presents the results of the compression tests carried out at various temperatures using the Gleeble simulator. To analyze the kinetics of static recrystallization in these steels, a softening kinetics were determined in a double-hit compression test. It was found that the dynamic recovery is a main thermally activated process occurring during hot deformation. The Nb microalloyed steel has higher flow stresses and peak strains than the Nb-free steel. A solute drag effect of Nb results in a slower softening kinetics of Nb containing steel. The effects of Mn on the retardation of Nb(C,N) precipitation and hot deformation characteristics are also discussed.
引用
收藏
页码：119 / +
页数：2
相关论文
共 12 条
[1]   High-temperature deformation properties of austenitic Fe-Mn alloys [J].
Cabanas, N. ;
Akdut, N. ;
Penning, J. ;
De Cooman, B. C. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (11) :3305-3315
[2]  
De Coensel Bert, 2010, 20 INT C AC ICA10, P1
[3]   Relationship between the austenite recrystallized fraction and the softening measured from the interrupted torsion test technique [J].
Fernández, AI ;
López, B ;
Rodríguez-Ibabe, JM .
SCRIPTA MATERIALIA, 1999, 40 (05) :543-549
[4]  
Grajcar A., 2011, ADV MAT RES IN PRESS
[5]  
Grajcar A., 2011, J ACHIEVEME IN PRESS
[6]   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
[7]   Effects of Manganese Content and Heat Treatment Condition on Mechanical Properties and Microstructures of Fine-grained Low Carbon TRIP-aided Steels [J].
Kim, Sung-Joon .
THERMEC 2009, PTS 1-4, 2010, 638-642 :3313-3318
[8]  
Merwin M.J., 2008, IRON STEEL TECHNOL, V5, P66
[9]   Modeling of the resistance to hot deformation and the effects of microalloying in high-Al steels under industrial conditions [J].
Siciliano, F ;
Poliak, EI .
MICROALLOYING FOR NEW STEEL PROCESSES AND APPLICATIONS, 2005, 500-501 :195-202
[10]   Aspects of production hot rolling of Nb microalloyed high Al high strength steels [J].
Skolly, RM ;
Poliak, EI .
MICROALLOYING FOR NEW STEEL PROCESSES AND APPLICATIONS, 2005, 500-501 :187-194
12