Constitutive Modeling of TWIP Steel in Uni-Axial Tension

2010 ◽  
Vol 654-656 ◽  
pp. 270-273 ◽  
Author(s):  
Jin Kyung Kim ◽  
Yuri Estrin ◽  
Hossein Beladi ◽  
Sung Kyu Kim ◽  
Kwang Geun Chin ◽  
...  
Keyword(s):  
Dynamic Strain Aging ◽  
Constitutive Modeling ◽  
Work Hardening ◽  
Strain Aging ◽  
Twip Steel ◽  
High Strength ◽  
Dynamic Strain ◽  
Axial Tension ◽  
Dislocation Densities ◽  
Work Hardening Rate

High Mn steels demonstrate an exceptional combination of high strength and ductility due to their high work hardening rate during deformation. The microstructure evolution and work hardening behavior of Fe18Mn0.6C1.5Al TWIP steel in uni-axial tension were examined. The purpose of this study was to determine the contribution of all the relevant deformation mechanism : slip, twinning and dynamic strain aging. Constitutive modeling was carried out based on the Kubin-Estrin model, in which the densities of mobile and forest dislocations are coupled in order to account for the continuous immobilization of mobile dislocations during straining. These coupled dislocation densities were also used for simulating the contribution of dynamic strain aging on the flow stress. The model was modified to include the effect of twinning.

Dynamic strain aging of twinning-induced plasticity (TWIP) steel in tensile testing and deep drawing

2015 ◽  
Vol 633 ◽  
pp. 136-143 ◽  
Author(s):  
J.G. Kim ◽  
S. Hong ◽  
N. Anjabin ◽  
B.H. Park ◽  
S.K. Kim ◽  
...  
Keyword(s):  
Dynamic Strain Aging ◽  
Deep Drawing ◽  
Tensile Testing ◽  
Strain Aging ◽  
Twip Steel ◽  
Dynamic Strain

scholarly journals Dynamic Strain Aging of a High Strength Steel

1967 ◽  
Vol 89 (4) ◽  
pp. 871-875 ◽  
Author(s):  
V. Goel ◽  
R. Busch ◽  
V. F. Zackay
Keyword(s):  
Yield Strength ◽  
Ultimate Strength ◽  
Dynamic Strain Aging ◽  
High Strength Steel ◽  
Strain Aging ◽  
High Strength ◽  
Important Variable ◽  
Dynamic Strain ◽  
Strength Ratio ◽  
Static Strain

The response of quenched and tempered, and ausform H-11 steel to strain aging was investigated. The straining temperature was the most important variable. Straining at elevated (up to 900 deg F) temperatures and retempering resulted in large increases (approximately 30 percent) in yield strength without the loss in ductility associated with static strain aging. The yield to ultimate strength ratio approached unity in the strain-aged steels, however, elongations of 8–12 percent were retained.

Dynamic Strain Aging in the Fe-Mn-Cu-C TWIP Steels

2013 ◽  
Vol 668 ◽  
pp. 861-864 ◽  
Author(s):  
Hai Jun Liu ◽  
Ding Yi Zhu ◽  
Xian Peng ◽  
Zhen Ming Hu ◽  
Ming Jie Wang
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Rate Sensitivity ◽  
Tensile Tests ◽  
Dynamic Strain ◽  
Work Hardening Rate ◽  
Twip Steels ◽  
High Work

Strain rate jump tests were performed on the Fe-Mn-Cu-C TWIP Steels to determine the strain rate sensitivity, and serrated plastic flow was observed in the stress-strain curves during tensile tests at different constant strain rates ranging from 2.5×10-4S-1 to 2.5×10-2S-1. The Fe-Mn-Cu-C TWIP Steels exhibit high work hardening rate and outstanding mechanical properties, The excellent mechanical properties are attributed to dynamic strain aging(DSA) effect, which result from the interaction between Mn(Cu)-C atom atmosphere, C-vacancy, C-C pairs and moving dislocations.

Features of dynamic strain aging in high strength Al-Zn-Mg-Cu alloy

1997 ◽  
Vol 234-236 ◽  
pp. 138-141 ◽  
Author(s):  
Kaiping Peng ◽  
Wenzhe Chen ◽  
Haoguo Zhang ◽  
Kuang-Wu Qian
Keyword(s):  
Dynamic Strain Aging ◽  
Strain Aging ◽  
High Strength ◽  
Dynamic Strain ◽  
Cu Alloy
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