Microstructure evolution of SiCp/Al-Ti foils during hot rolling and reaction annealing

2011 ◽  
Vol 21 ◽  
pp. s304-s307
Author(s):  
Jin-cheng PANG ◽  
Guo-hua FAN ◽  
Ai-bin LI ◽  
Lin GENG
Keyword(s):  
Microstructure Evolution ◽  
Hot Rolling ◽  
Reaction Annealing

scholarly journals Experimental and Numerical Study of the Effects of the Reversal Hot Rolling Conditions on the Recrystallization Behavior of Austenite Model Alloys

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 26
Author(s):  
Krzysztof Muszka ◽  
Mateusz Sitko ◽  
Paulina Lisiecka-Graca ◽  
Thomas Simm ◽  
Eric Palmiere ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Hot Rolling ◽  
Strain Path ◽  
Physical Simulation ◽  
Numerical Study ◽  
Kinematic Hardening ◽  
Process Window ◽  
Recrystallization Behavior ◽  
Full Field ◽  
Strain Reversal

The experimental and numerical study of the effects of the recrystallization behavior of austenite model alloys during hot plate rolling on reverse rolling is the main goal of the paper. The computer models that are currently applied for simulation of reverse rolling are not strain-path-sensitive, thus leading to overestimation of the processing parameters outside the accepted process window (e.g., deformation in the partial austenite recrystallization region). Therefore, in this work, a particular focus is put on the investigation of strain path effects that occur during hot rolling and their influence on the microstructure evolution and mechanical properties of microalloyed austenite. Both experimental and numerical techniques are employed in this study, taking advantage of the integrated computational material engineering concept. The combined isotropic–kinematic hardening model is used for the macroscale predictions to take into account softening effects due to strain reversal. The macroscale model is additionally enriched with the full-field microstructure evolution model within the cellular automata framework. Examples of obtained results, highlighting the role of the strain reversal on the microstructural response, are presented within the paper. The combination of the physical simulation of austenitic model alloys and computer modeling provided new insights into optimization of the processing routes of advanced high-strength steels (AHSS).

Microstructure evolution of Al-15% Si alloy during hot rolling

2018 ◽  
Vol 98 (10) ◽  
pp. 456-463
Author(s):  
Chunxia Wang ◽  
Fuxiao Yu ◽  
Dazhi Zhao ◽  
Xiang Zhao ◽  
Liang Zuo
Keyword(s):  
Microstructure Evolution ◽  
Hot Rolling

Mathematical model of microstructure evolution of X60 line pipe steel during CSP hot rolling

2010 ◽  
Vol 17 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Quan Li ◽  
Zheng-dong Liu ◽  
Guang-bo Tang ◽  
Zhi-ling Tian ◽  
Fulio Siciliano
Keyword(s):  
Mathematical Model ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Pipe Steel ◽  
Line Pipe ◽  
Line Pipe Steel

Impact Analysis of Microstructure Evolution in Hot Rolling of H-Beams

2013 ◽  
Vol 652-654 ◽  
pp. 2024-2028
Author(s):  
Wen Ping Liu ◽  
B. Zhang ◽  
Pei Qi Wang ◽  
Qin He Zhang
Keyword(s):  
Microstructure Evolution ◽  
Hot Rolling ◽  
Mechanical Model ◽  
Impact Analysis ◽  
Rolling Process ◽  
Time Interval ◽  
Hot Rolling Process ◽  
Finite Element Package ◽  
H Beam ◽  
Rough Rolling

To improve the product properties of H-beams, it is essential to understand the effects of hot rolling parameters on the microstructure evolution of the beams. For this purpose, a thermo mechanical model was built with the finite element Package ABAQUS. By re-meshing the model, multipass large-deformation hot rolling process was simulated under the boundary conditions predefined in accordance with the practical production. Based on the hot rolling simulation, an impact analysis of strain rate, initial rough rolling temperature, and time interval between passes on the microstructure evolution of H-beam austenite was conducted. The analytical results are meaningful for optimizing hot rolling parameters and improving H-beam properties.

Mathematical Modeling of Microstructure Evolution of V Steels during Hot Rolling of Seamless Tubes

2010 ◽  
Vol 638-642 ◽  
pp. 2537-2542
Author(s):  
Ricardo Nolasco Carvalho ◽  
Marcelo A.C. Ferreira ◽  
Dagoberto Brandão Santos ◽  
Ronaldo Barbosa
Keyword(s):  
Mathematical Modeling ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Rolling Mill ◽  
Transfer Time ◽  
Tube Rolling ◽  
Rolling Industry ◽  
Size Evolution ◽  
The Mathematical Model ◽  
Kinetics Of

Torsion and compression testing have been used to simulate microstructure evolution of industry processes. Additionally, mathematical modeling of the industry hot rolling processes has been carried out by several researchers. These models employed equations published in the literature describing kinetics of softening, grain size evolution and grain growth. Validation of the models was carried, in some cases, by comparing the microstructure or the average stress per pass, the latter as calculated from industry rolling mill loads. In the present work, torsion simulation and industry trial results were used to validate the mathematical model presented. Equations used in the model were mostly taken from literature and appropriate modifications were implemented concerning basically two points: a) the transfer time between CMM and SRM, a step in the production line typical for seamless rolling and rather unusual for other industry rolling processes and b) the chemical composition used in tube rolling industry where C equivalent values are usually higher than those used in the rolling of flats.

Numerical simulation for microstructure evolution in AM50 Mg alloy during hot rolling

2010 ◽  
Vol 47 (4) ◽  
pp. 919-925 ◽  
Author(s):  
Hanlin Ding ◽  
Kazuki Hirai ◽  
Tomoyuki Homma ◽  
Shigeharu Kamado
Keyword(s):  
Numerical Simulation ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Mg Alloy

Influence of Processing State on Recovery Stress in NiTiNb Shape Memory Alloy

2014 ◽  
Vol 875-877 ◽  
pp. 1525-1528 ◽  
Author(s):  
Er Min Wang ◽  
Qi Hu Hong ◽  
Zhi Ming Ni ◽  
Jin Han
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Stress Level ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Cold Drawing ◽  
Eutectic Microstructure ◽  
Recovery Stress ◽  
Tini Phase

Self-made tension machine was used to measure the evolution of recovery stress under different processing state for NiTiNb alloy. Then, SEM was used to investigate the microstructure evolution. The results show that the range of the highest recovery stress for forged NiTiNb alloy is between 210-215MPa. Otherwise, the recovery stress level of the samples enduring cold drawing and hot rolling is basically same, which all belong to the rage of 210-220MPa. After forging, the firstly precipitated TiNi phase particles become fine, only 5-8μm. The Nb tablets in eutectic microstructure, which originally contributed between TiNi phase particles, appear spheroidization.

Simulation of Multipass Hot Rolling for 7050 Aluminum Alloys

2016 ◽  
Vol 846 ◽  
pp. 145-150
Author(s):  
Yang An ◽  
Peter Hodgson ◽  
Chun Hui Yang
Keyword(s):  
Aluminum Alloys ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Subgrain Size ◽  
Local Strain ◽  
Rolling Process ◽  
Hot Rolling Process ◽  
Mechanical Evolution ◽  
Mechanical Behaviours ◽  
Parametric Studies

To determine the relations between rolling passes, mechanical behaviours and microstructure evolution of AA7050 aluminum alloys, finite element modeling of a multipass hot rolling process is developed and employed to investigate thermo-mechanical evolution during this processing. Through parametric studies, the distribution of local strain and temperature across thickness during the hot rolling process are numerically determined. These results are used to determine the subgrain size and thus the microstructure evolution during the hot rolling process are estimated.

Effect of the Rolling Process on Microstructures and Mechanical Properties of the Extruded LA91 Alloy Sheet

2011 ◽  
Vol 686 ◽  
pp. 90-95 ◽  
Author(s):  
Bin Jiang ◽  
Qing Shan Yang ◽  
Liang Gao ◽  
Fu Sheng Pan
Keyword(s):  
Mechanical Properties ◽  
Microstructure Evolution ◽  
Hot Rolling ◽  
Rolling Process ◽  
Alloy Sheet ◽  
Rolling Reduction ◽  
Thermal Compression ◽  
Cross Rolling ◽  
The Cross ◽  
Rolling Route

The microstructure evolution of the extruded Mg-9Li-1Al (LA91) during rolling was investigated taking account of effects of different routes including hot rolling, and cross rolling. The rolling parameters were suggested by thermal compression testing. As a result, the suggested rolling parameters were 250°C and 1.0s-1. Transverse hot rolling would bring a finer microstructure to the as-rolled LA91 sheet. With the enhancement of the rolling reduction during unidirectional hot rolling the α-Mg phase became granular or short rod-like from long strip-like. Transverse + longitudinal hot rolling would improve the microstructure and was a better cross rolling route by which the strength and the elongation of the cross rolled LA91 sheet reached 243MPa and 20% respectively. The over-aging existed in the cross rolled LA91 sheets.

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