scholarly journals High Temperature Deformation and Continuous Dynamic Recrystallization Behaviors of AA6082 using Processing Maps

2016 ◽  
Vol 54 (11) ◽  
pp. 793-801 ◽  
Author(s):  
Soong-Keun Hyun ◽  
Sang-Min Lee ◽  
Ji-Woon Lee ◽  
Hyun-Jin Choi
Keyword(s):  
High Temperature ◽  
Dynamic Recrystallization ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Processing Maps ◽  
Continuous Dynamic Recrystallization ◽  
Continuous Dynamic

scholarly journals A Combined Method to Model Dynamic Recrystallization Based on Cellular Automaton and a Phenomenological (CAP) Approach

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 923 ◽  
Author(s):  
Morteza Azarbarmas ◽  
Seyed Mirjavadi ◽  
Ali Ghasemi ◽  
Abdel Hamouda
Keyword(s):  
Dynamic Recrystallization ◽  
Cellular Automaton ◽  
Present Model ◽  
Phenomenological Approach ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Flow Curves ◽  
Continuous Dynamic Recrystallization ◽  
Proposed Model ◽  
Continuous Dynamic

Titanium alloys with high stacking-fault energy show continuous dynamic recrystallization (CDRX) instead of discontinuous dynamic recrystallization (DDRX) during high-temperature deformation. During the CDRX mechanism, new recrystallized grains are generated by the progressive increasing of the low-angle boundary misorientations. In the present work, the CDRX phenomenon was modeled by using a cellular automaton (CA)-based method. The size of seeds was determined based on a phenomenological approach, and then the number and distribution of recrystallized grains as well as the topological changes were applied by utilizing the CA approach. In order to verify the capacity of the proposed model for predicting the microstructural characteristics, the experimental data of the hot-compressed TiNiFe alloy were used. Results showed that the presented model can accurately estimate the fraction of the recrystallized area. Moreover, the macroscopic flow curves of the alloy were well predicted by the present model.

Continuous Dynamic Recrystallization of AISI 430 Ferritic Stainless Steel by Hot Torsion Deformation

2005 ◽  
Vol 475-479 ◽  
pp. 145-148 ◽  
Author(s):  
Jae-Young An ◽  
Suk Min Han ◽  
Young Jae Kwon ◽  
Yeon Chul Yoo
Keyword(s):  
Stainless Steel ◽  
Flow Stress ◽  
Dynamic Recrystallization ◽  
Ferritic Stainless Steel ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Angle ◽  
Continuous Dynamic Recrystallization ◽  
Continuous Dynamic ◽  
Aisi 430

The high temperature deformation behavior of AISI 430 ferritic stainless steel has been studied over a temperature range of 800 to 1000°C and strain rate of 0.05-5.0/sec. The evolution of flow stress and microstructures showed the characteristics of continuous dynamic recrystallization (CDRX). The flow stress curves gradually decreased with increasing strain over the peak stress until 500% of strain without any steady state shown in typical austenitic stainless steel. Sub-grains of low angle firstly formed along the original high angle grain boundary were propagated into the inside of original grain and transformed to high angle. The CDRX grain sizes of AISI 430 deformed at 1000 °C and 0.5/sec was about 30-35㎛.

scholarly journals Hot Deformation Behavior of Q345 Steel and Its Application in Rapid Shear Connection

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2186
Author(s):  
Mengwei Wu ◽  
Shuangjie Zhang ◽  
Shibo Ma ◽  
Huajun Yan ◽  
Wei Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Constitutive Equation ◽  
Dynamic Recrystallization ◽  
Deformation Behavior ◽  
High Temperature Deformation ◽  
Secondary Development ◽  
Temperature Deformation ◽  
Volume Percentage ◽  
Shear Connection ◽  
Deform 3D

The high-temperature deformation behavior of Q345 steel is detected by a Gleeble-3800 thermal simulator. The Arrhenius constitutive equation for high-temperature flow stress and the dynamic recrystallization model are constructed. With the secondary development technology, customized modifications are made on existing Deform-3D software. The constructed constitutive model and dynamic recrystallization model are embedded into Deform-3D to realize the secondary development of Deform-3D. The grain size and volume percentage distribution of dynamic recrystallization are obtained by simulating the shear connection process at high temperature and high speed. The results show that the constitutive equation and the dynamic recrystallization model constructed in this paper can be used to predict the evolution of the microstructure. The difference between the prediction results and the experimental data is about 3%. The accuracy of Arrhenius constitutive equation, dynamic recrystallization model and the feasibility of software secondary development are verified.

Dynamic Recrystallization in Sintered Cobalt during High-Temperature Deformation

2010 ◽  
Vol 41 (6) ◽  
pp. 1474-1482 ◽  
Author(s):  
B. Paul ◽  
A. Sarkar ◽  
J.K. Chakravartty ◽  
A. Verma ◽  
R. Kapoor ◽  
...  
Keyword(s):  
High Temperature ◽  
Dynamic Recrystallization ◽  
High Temperature Deformation ◽  
Temperature Deformation

High temperature deformation processing maps for boron modified Ti–6Al–4V alloys

2010 ◽  
Vol 527 (23) ◽  
pp. 6157-6165 ◽  
Author(s):  
Indrani Sen ◽  
Ravi Sankar Kottada ◽  
U. Ramamurty
Keyword(s):  
High Temperature ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Processing Maps ◽  
Deformation Processing

High-temperature deformation processing maps for a NiTiCu shape memory alloy

2011 ◽  
Vol 26 (19) ◽  
pp. 2484-2492 ◽  
Author(s):  
Vyasa V. Shastry ◽  
Bikas Maji ◽  
Madangopal Krishnan ◽  
Upadrasta Ramamurty
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Processing Maps ◽  
Deformation Processing ◽  
Image Position

Abstract

Dynamic Recrystallization at Triple Junction during High-Temperature Deformation in Copper Tricrystal

2002 ◽  
Vol 408-412 ◽  
pp. 761-766 ◽  
Author(s):  
Sutandyo Andiarwanto ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
High Temperature ◽  
Dynamic Recrystallization ◽  
Triple Junction ◽  
High Temperature Deformation ◽  
Temperature Deformation

Understanding the Mechanism of Dynamic Recrystallization During High-Temperature Deformation in Nb-1Zr-0.1C Alloy

2018 ◽  
Vol 28 (1) ◽  
pp. 448-462 ◽  
Author(s):  
Atanu Chaudhuri ◽  
Apu Sarkar ◽  
Rajeev Kapoor ◽  
J. K. Chakravartty ◽  
R. K. Ray ◽  
...  
Keyword(s):  
High Temperature ◽  
Dynamic Recrystallization ◽  
High Temperature Deformation ◽  
Temperature Deformation
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