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Sellars and Zhu [5] have presented a physically based model which relates the microstructure evolution during the hot deformation to the state variables such as temperature and plastic deformation. The model presented in this work is based on the saturation of microstructure parameters after reaching steady-state forming condition.
The microstructure and texture evolution of a strip cast and of a hot rolled austenitic stainless steel (18% Cr, 8.5% Ni) during cold rolling was studied (maximum thickness reductiond/d0= 80%). The microstructure of the hot band was homogeneous(plate) Author Chun Hui Luo, David Martin, Juha PyykkönenPublish Year 2018recrystallization(steel) A new unied approach for modeling hot rolling of steel Part 1 Comparison of models for recrystallization J. Orenda,b, F. Hagemann b, F. Klose , B. Maas , H. Palkowskia, aInstitute for Metallurgy, Robert-Koch-Straße 42, 38678 Clausthal, Germany bSalzgitter Mannesmann Forschung GmbH, Eisenhüttenstraße 99, 38239 Salzgitter, Germany Abstract Models for the microstructure evolution during microstructure evolution of 42crmo4 during hot
A robust model for calculating the necessary process variables such as strain, strain rate and temperature in hot rolling of a steel plate or strip is presented in this paper. The applied approach includes a well-constructed velocity function in the deformation model that is validated using a commercial finite element solver. The developed microstructure model is then integrated into (plate) Author Min Liu, Qing-Xian Ma, Jian-Bin LuoPublish Year 2018Deformation Behavior and Microstructure Evolution of (steel) Deformation Behavior and Microstructure Evolution of the Cu-2Ni-0.5Si-0.15Ag Alloy During Hot Compression YI ZHANG, ALEX A. VOLINSKY, QIAN-QIAN XU, ZHE CHAI, BAOHONG TIAN, PING LIU, and HAI T. TRAN Hot deformation behavior of the Cu-2Ni-0.5Si-0.15Ag alloy was investigated by hot
growth behaviour during soaking treatments, but also on the subsequent mechanisms which control the microstructural evolution during hot forging. Gamma prime ( ) is the main strengthening phase for Nimonic 80a, but the presence of carbides such as MC, M 23 C 6 and M 7 C 3 is also reported in literature for this alloy (Tian et al., 2003b).(plate) Author Ricardo Henrique Buzolin, Franz Miller Branco Ferraz, Michael Lasnik, Alfred Krumphals, Maria Cecili microstructure evolution of 42crmo4 during hotPublish Year 2020Evolution of Microstructure during Hot Working[1 microstructure evolution of 42crmo4 during hot(steel) The effect of thermomechanical processing on microstructure evolution is summarized to provide insight into the aspect of process design. The article provides information on hot working and key processes that control microstructure evolution dynamic recovery, static recovery, recrystallization, and grain growth.
Dec 13, 2016The objective is to create a feedback between the microstructure and the material flow stress in the finite element modelling. Using a forging of a windmill main shaft as an example, the description of the technological process is presented, focused on phenomena occurring in the microstructure during hotforging.(plate) Characterization of dynamic microstructure evolution microstructure evolution of 42crmo4 during hot(steel) alloys during the whole hot compression deformation process. Consequently, the present work studied on the relationship between the dynamic microstructure and complex precipitates evolution of an Al4.10Cu 1.42Mg0.57Mn0.12Zr alloy during hot compression at deformation temperature of 300 ºC and strain rate of 10 s1. Thus further microstructure evolution of 42crmo4 during hot
TITLE Modeling the Microstructure Evolution During Hot Deformation of Microalloyed Steels AUTHOR Mohammad Kashif Ur Rehman, B. Tech (National Institute of Technology, Jamshedpur) SUPERVISORS Dr. Hatem S. Zurob and Dr. S.V.Subramanian NUMBER OF PAGES xv, 174(plate) Cited by 1Publish Year 2016Author Lin Lu, Long-gang Hou, Jin-xiang Zhang, He-bin Wang, Hua Cui, Jin-feng Huang, Yong-an Zhang, Ji-Shan microstructure evolution of 42crmo4 during hotMaterials Free Full-Text Microstructure Evolution and microstructure evolution of 42crmo4 during hot(steel) In this study, the hot compression experiments under temperatures of 8501200 °C and strain rates of 0.01/s1/s are conducted using Gleeble thermal and mechanical simulation machine. And the flow stress curves and microstructure after hot compression are obtained. Effects of temperature and strain rate on microstructure are analyzed.
The microstructure evolution of a typical nickel-based superalloy was studied in the strain range of 0.10.9 at 1110 °C/0.01 s 1 by using the electron backscattered diffraction technique. It was found that the evolution of recrystallized microstructures, grain boundary characteristics, and textures was closely related to strain level.(plate) Cited by 2Publish Year 2019Author Jose Luis Reyes Barragan, Roberto Ademar Rodriguez Diaz, Maria Luisa Ojeda Martinez, Silvia Gaona Ji microstructure evolution of 42crmo4 during hotModeling the microstructural changes during hot tandem microstructure evolution of 42crmo4 during hot(steel) Jun 01, 1998Modeling the microstructural changes during hot tandem rolling of AA5XXX aluminum alloys. Part 2 Textural evolution
Jan 22, 2021The microstructure model includes dislocation density evolution equation, structure spheroidization evolution equation and Hhall-Petch strengthening equation. Gao [ 27 , 28 ] used Ti-6Al-4V and the test data to verify the model, and the predicted results of the model were in good agreement with the test data.(plate) Cited by 37Publish Year 2007Author A. Dehghan-Manshadi, Matthew Barnett, Peter HodgsonFE Simulation of Microstructure Evolution during Ring microstructure evolution of 42crmo4 during hot(steel) distribution during high temperature deformation, a basic understanding of the microstructure evolution during complex manufacturing sequences, including heating, soaking and hot working, should be made as an essential prerequisite. In this work, a microstructure prediction model is implemented into a commercial FE code based
Materials and ProceduresResults and DiscussionReferencesMaterials The billet used in the present work was a 55-mm diameter, hot-rolled bar stock of TC11 titanium alloy (according to GB/T 2965-2007.) Its measured composition (in wt%) was 5.9% aluminum, 3.27% molybdenum, 1.40% zirconium, 0.2% silicon, and the balance of titanium. The transus for this material is about 1008°C. The study of TC11 alloy deformation behavior and microstructure evolution were performed in as-supplied state. The initial microstructure of TC11 See more on forgingmagazineEstimated Reading Time 8 minsFEM simulation on dynamic microstructure change during (steel) Download Citation FEM simulation on dynamic microstructure change during hot rolling of 42CrMo4 alloy steel The visco-plastic FEM simulation technology of LARSTRAN/SHAPE was used to simulate microstructure evolution of 42crmo4 during hot(plate) Cited by 3Publish Year 2018Author Yiwa Luo, Hanjie Guo, Jing Guo, Wensheng YangDynamic recrystallization kinetics and microstructure microstructure evolution of 42crmo4 during hot(steel) Dynamic recrystallization (DRX) plays a significant role in grain refinement. Hot compressions and metallographic tests are conducted. Equations of DRX kinetics are fitted by least square method and finite element models (FEM) coupled with DRX kinetics equations are established to study the effects of forming parameters on microstructure evolution.
general average microstructure properties (the kinetics of recrystallization and grain size), but also able to visually provide the virtual microstructural evolution during hot deformation. Compared with the other methods, CA method can be used as an alternative approach to describe the spatial and temporal microstructure evolution on a mesoscale.(plate) Cited by 6Publish Year 2009Author AH Meysami, R Ghasemzadeh, SH Seyedein, Aboutalebi, R Ebrahimi, M JavidaniMicrostructural evolution during hot deformation of duplex microstructure evolution of 42crmo4 during hot(steel) Jul 19, 2013The microstructure evolution during hot deformation of a 23Cr5Ni3Mo duplex stainless steel was investigated in torsion. The presence of a soft ferrite phase in the vicinity of austenite caused strain partitioning, with accommodation of more strain in the ferrite. Furthermore, owing to the limited number of austenite/austenite grain boundaries, the kinetics
microstructure optimization of components produced by metal forming processes such as hot forging or rolling. This paper aims to present mathematic models to predict microstructure evolution during hot working, showing an application of mathematical models coupled to thermo mechanical processes simulation software.(plate) Constitutive Characteristics, Microstructure, and Texture microstructure evolution of 42crmo4 during hot(steel) The interaction between hardening and softening effects of as-cast 42CrMo alloy in RAHRR presents the complicated microstructure and texture evolution. The microstructure and texture are affected by the discontinuous characteristics in deformation intervals during multipass rolling [1416]. The grain refinement and size distribution are also closely related to the texture evolution.
Mar 12, 2019Figure 1 exhibits the microstructural evolution of hot-rolled IF steel as a function of the duration of recrystallisation performed at 780°C. It can be seen from this set of micrographs that the onset of recrystallisation took place at 180 s with the smaller new grains appearing on the deformed microstructure during the first 60120 s of the thermal treatment, and a typical (plate) Effect of Strain Level on The Evolution of Microstructure microstructure evolution of 42crmo4 during hot(steel) 1 Effect of Strain Level on The Evolution of Microstructure in a recently developed AD730 Nickel Based Superalloy During Hot Forging T. Konkova1,2,3,*, S. Rahimi1, S. Mironov4, T.N. Baker5 1Advanced Forming Research Centre (AFRC), University of Strathclyde, 85 Inchinnan Drive, Inchinnan, PA4 9LJ United Kingdom
Apr 27, 2020Moreover, the hot processing maps are also investigated. Combined with the microstructure evolution analysis, the appropriate hot forming processing parameters of 05Cr17Ni4Cu4Nb steel is proposed in the temperature range of 10001100 °C and strain rate range of 0.010.02 s 1.(plate) Gleeble-Simulated and Semi-Industrial Studies on the microstructure evolution of 42crmo4 during hot(steel) However, it is prone to cracking due to its poor hot ductility during continuous hot working processes. In this investigation, the microstructure ch Gleeble-Simulated and Semi-Industrial Studies on the Microstructure Evolution of Fe-Co-Cr-Mo-W-V-C Alloy during Hot Deformation Materials (Basel). 2018 Dec 18;11 (12):2577. microstructure evolution of 42crmo4 during hot
Two different mesoscale models based on dislocation reactions are developed and applied to predict both the flow stress and the microstructure evolution during the hot deformation of titanium alloys. Three distinct populations of dislocations, named mobile, immobile, and wall dislocations, describe the microstructure, together with the crystal microstructure evolution of 42crmo4 during hot(plate) Microstructure Evolution During Hot Deformation of a Micro microstructure evolution of 42crmo4 during hot(steel) May 19, 2016In the present investigation, hot deformation by uniaxial compression of a microalloyed steel has been carried out, using a deformation dilatometer, after homogenization at 1200 °C for 20 min up to strains of 0.4, 0.8 and 1.2 at different temperatures of 900, 1000 and 1100 °C, at a constant strain rate of 2 s1 followed by water quenching. In all the deformation
Dec 10, 2020The microstructural evolution of an NbTi microalloyed steel with the application of coiled tubing is studied in detail during hot rolling followed by accelerated cooling and simulated coiling by means of optical microscopy complemented with electron backscattered diffraction and transmission electron microscopy.(plate) Microstructure Evolution of Superalloy for Large Exhaust microstructure evolution of 42crmo4 during hot(steel) Jun 01, 2004It is necessary to understand the microstructure variation evolution. The microstructure change evolution occurs by recovery, recrystallization and grain growth phenomena. The dynamic recrystallization evolution has been studied in the temperature range 950-1250°C and strain rate range 0.05-5s -1 using hot compression tests.
Nov 02, 2010Microstructure evolution during hot-pack rolling of nickel-base superalloys to ~1-mm-thick sheet and ~200-m-thick foil was investigated with electron backscatter diffraction. The microstructure was observed at increasing levels of strain, which revealed the progressive formation of an unrecrystallized, banded microstructure at sheet gage.(plate) Microstructure characteristics of spray-formed high speed microstructure evolution of 42crmo4 during hot(steel) Microstructure characteristics of spray-formed high speed steel and its evolution during the subsequent hot deformation process are investigated. It shows that the deposition billet can be classified into four main zones either the bottom band or peripheral zone has a relatively high porosity with mainly irregularly interstitial pores while microstructure evolution of 42crmo4 during hot
May 15, 2020Based on the above discussion, there is no doubt that the DRX process dominated the microstructure evolution during the hot deformation process. Science the DRX process is accompanied by the evolution of misorientation and dislocation within grains, the KAM maps would be appropriate to assist the discussion on this topical [ 48 ].(plate) Microstructure evolution of 6016 aluminum alloy during microstructure evolution of 42crmo4 during hot(steel) Microstructure evolution of 6016 aluminum alloy during compression at elevated temperatures by hot rolling emulation Chang-qing HUANG1, Jin-peng DIAO2, Hua DENG1, Bing-ji LI3, Xing-hua HU4 1. State Key Laboratory of High- performance Complicated Manufacture, College of Mechanical and Electrical
Mar 10, 2020Hot compression Flow stress Microstructure evolution ABSTRACT The Cu-1.0Co-0.65Si-0.1Ti alloy was obtained by vacuum melting, and then the hot deformation experiment was carried out by using the Gleeble-1500 simulator at 0.00110 s 1 strain rates and 500900 C deformation temperatures.(plate) Modeling of Microstructure Evolution during Hot Strip microstructure evolution of 42crmo4 during hot(steel) processes during hot strip rolling of DP steels require the knowledge of the underlying metallurgical phenomena, i.e. hot deformation behaviour, recrystallization and austenite decomposition. Starting with the pioneering work of Sellars et al.18,19) to predict microstructure evolution during multi-
The microstructure evolution during thermo-mechanical processing of a state-of-the-art TiNb HSLA steel with a tensile strength of 780MPa has been investigated with laboratory investigations. The entire hot strip rolling process was simulated with hot torsion tests. Using the Gleeble 1500 thermomechanical simulator,(plate) Numerical Simulation of Thermomechanical Processes (steel) Microstructure Evolution During Hot Working At low temperatures, work-hardening mechanisms such as increasing dislocation density lead to an in - crease in stress necessary for further deformation. However, in processes carried out at high tempera-tures, such as hot forging and rolling, diusion processes become important, and microstructural
Title On the Microstructural Evolution of 4130 Steel During Hot Compression VOLUME 5 ISSUE 1 Author(s):Mohamadreza Nourani, Vahid Sajadifar, Mostafa Ketabchi, Abbas S. Milani and Spiro Yannacopoulos Affiliation:School of Engineering, University of British Columbia, Kelowna, BC V1V1V7, Canada. Keywords:Austenite grain size, dynamic recrystallization, flow stress, hot (plate) Physical simulation of hot deformation and microstructural microstructure evolution of 42crmo4 during hot(steel) Direct quenching and tempering (DQ-T) of hot rolled steel section has been widely used in steel mill for the sake of improvement of mechanical properties and energy saving. Temperature history and microstructural evolution during hot rolling plays a major role in the properties of direct quenched and tempered products. The mathematical and physical modeling of hot forming
Jun 15, 1999Plastic flow, microstructure evolution, and defect formation during primary hot working of titanium and titanium aluminide alloys with lamellar colony microstructures S.L. Semiatin Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/MLLM, WrightPatterson Air Force Base, OH 45433, USA(plate) Simulation of Deformation Behavior and Microstructure microstructure evolution of 42crmo4 during hot(steel) In presented paper FE simulation coupled with microstructure evolution during hot forging of TC11 titanium alloy has been performed by QForm FEM code. Constitutive relationships, friction conditions and microstructure evolution model have been established using the experiments.
Mar 01, [email protected]{osti_483628, title = {Texture and microstructure evolution during cold rolling of a strip cast and of a hot rolled austenitic stainless steel}, author = {Raabe, D}, abstractNote = {The microstructure and texture evolution of a strip cast and of a hot rolled austenitic stainless steel (18% Cr, 8.5% Ni) during cold rolling was studied (maximum (plate)Microstructure evolution of 42CrMo4 during hot forging microstructure evolution of 42crmo4 during hot(steel) For that reason, this paper presents a model for the prediction of the microstructure evolution as well as simulation results regarding the influence of the electrochemical machining process on resulting surface topography for the ferritic perlitic steel 42CrMo4 in a passivating electrolyte system.
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