Effect of fine second phase particles on stored energy and recrystallization kinetics of cold rolled copper single crystals

Metal Science ◽  
1983 ◽  
Vol 17 (10) ◽  
pp. 469-474 ◽  
Author(s):  
I. Baker ◽  
J. W. Martin
Keyword(s):  
Single Crystals ◽  
Second Phase ◽  
Stored Energy ◽  
Recrystallization Kinetics ◽  
Second Phase Particles ◽  
Cold Rolled ◽  
Copper Single Crystals ◽  
Kinetics Of

Monte-Carlo Modeling of Recrystallization Kinetics of Cold-Rolled Titanium

2010 ◽  
Vol 654-656 ◽  
pp. 1486-1491 ◽  
Author(s):  
Y.B. Chun ◽  
S. Lee Semiatin ◽  
Sun Keun Hwang
Keyword(s):  
Monte Carlo ◽  
Heterogeneous Nucleation ◽  
Negative Deviation ◽  
Stored Energy ◽  
High Deformation ◽  
Recrystallization Kinetics ◽  
Cold Rolled ◽  
Log Normal ◽  
Kinetics Of ◽  
Log Normal Distribution

The recrystallization behavior of cold-rolled, commercial-purity titanium was studied experimentally and with Monte-Carlo (MC) modeling. Utilization of EBSD-OIM as input for MC modeling resulted in realistic predictions of recrystallization kinetics, microstructure and texture, which were in good agreement with experimental results. MC modeling of recrystallization kinetics predicted that the non-uniform stored energy distribution, heterogeneous nucleation of recrystallization and recovery in combination leads to a negative deviation from linear JMAK kinetics. It was found that concurrent recovery that takes place during recrystallization is an important process that controls both the overall recrystallization kinetics and the deviation of linear JMAK kinetics. On the other hand, the non-uniformly distributed stored energy itself has little effect on the negative deviation from JMAK kinetics but intensifies the deviation when heterogeneous nucleation is combined. Modeling results also revealed that heterogeneous nucleation of recrystallized grains and their early impingement in local areas of high deformation are essential for producing a log-normal distribution of grain size and a typical recrystallization texture of rolled titanium.

scholarly journals Importance of Local Structural Variations on Recrystallization

2013 ◽  
Vol 753 ◽  
pp. 37-41 ◽  
Author(s):  
Dorte Juul Jensen ◽  
Feng Xiang Lin ◽  
Yu Bin Zhang ◽  
Yong Hao Zhang
Keyword(s):  
Spatial Distribution ◽  
Second Phase ◽  
Stored Energy ◽  
Structural Variations ◽  
Length Scales ◽  
Deformation Microstructure ◽  
Recrystallization Kinetics ◽  
Second Phase Particles

Effects of local variations in the deformation microstructure on subsequent recrystallization are discussed and illustrated by three examples. The three examples consider local variations on different length scales and are: 1. Effects of local variations in the deformation microstructure on the formation of protrusions on migrating boundaries. 2. Effects of an inhomogeneous spatial distribution of second phase particles on growth. 3. Effects of stored energy and orientation variations on recrystallization kinetics.

Precipitation and Recrystallization in an Al-Mg-Sc Alloy

2006 ◽  
Vol 519-521 ◽  
pp. 1647-1652 ◽  
Author(s):  
R. Roumina ◽  
Chad W. Sinclair ◽  
F. Fazeli
Keyword(s):  
Microstructural Evolution ◽  
Annealing Temperature ◽  
Microstructural Stability ◽  
Rolled Material ◽  
Recrystallization Kinetics ◽  
Cold Rolled ◽  
Kinetics Of Precipitation ◽  
Kinetics Of ◽  
Relative Kinetics

The addition of scandium severely retards the recrystallization of Al-Sc alloys when it is present in the form of fine Al3Sc precipitates. Though many studies have focused on the role of Al3Sc in the deformation and recrystallization of pre-aged or hot deformed Al-Sc alloys, recent studies on the annealing response of solutionized and cold rolled material have shown various possibilities for microstructural stability depending on the relative kinetics of precipitation and recrystallization. In this study, the microstructural evolution of solutionized and cold rolled Al- 2.9wt%Mg-0.16wt%Sc has been followed in order to evaluate the role of imposed strain and annealing temperature on the recrystallization kinetics.

scholarly journals A Microstructure Investigation of the Deformation and Recrystallization of Particle-Containing Aluminium-Silicon Alloys

1993 ◽  
Vol 20 (1-4) ◽  
pp. 125-140 ◽  
Author(s):  
F. Habiby ◽  
F. J. Humphreys
Keyword(s):  
Single Crystals ◽  
Recrystallization Texture ◽  
Rolling Texture ◽  
Plasticity Theory ◽  
Second Phase ◽  
Slip Systems ◽  
Deformation Bands ◽  
Silicon Alloys ◽  
X Ray ◽  
Second Phase Particles

Single crystals and polycrystals of aluminium containing non-deformable second-phase particles of silicon, have been deformed, and the resultant structures investigated by microscopy and by X-ray and microtexture techniques. The particle size is found to influence the scale of the deformation bands formed, and there is evidence that particles may affect the nucleation of these bands. The deformed materials were recrystallized, and the effect of particle stimulated nucleation on the weakening of the rolling texture is discussed with reference to a computer simulation. In contrast, the recrystallization texture of particle-containing single crystals deformed on only two slip systems is sharp, and it is shown that the texture components are consistent with plasticity theory.

scholarly journals Influence of Grain Refinement on Oxidation Behavior of Two-Phase Cu–Cr Alloys at 973–1,073 K in Air

2016 ◽  
Vol 35 (10) ◽  
pp. 1005-1011
Author(s):  
T. J. Pan ◽  
J. Chen ◽  
Y. X. He ◽  
W. Wei ◽  
J. Hu
Keyword(s):  
Grain Size ◽  
Spatial Distribution ◽  
Oxidation Behavior ◽  
Second Phase ◽  
Two Phase ◽  
Reactive Component ◽  
Parabolic Law ◽  
Second Phase Particles ◽  
Kinetics Of ◽  
Lower Oxidation

AbstractThe oxidation behavior of grain-refined Cu–7.0 Cr alloy (GR Cu–7.0 Cr) in air at 973–1,073 K was investigated in comparison with normal casting Cu–7.0 Cr alloy (CA Cu–7.0 Cr). The oxidation of CA Cu–7.0 Cr alloy nearly followed parabolic law, while the oxidation kinetics of GR Cu–7.0 Cr slightly deviated from parabolic law. Both alloys almost produced multi-layered scales consisting of the outer layer of CuO and the inner layer of mixed Cr2O3 and Cu2O oxides plus internal oxidation zones of chromium. The grain-refined Cu–7.0 Cr alloy produced a more amount of Cr2O3 in the inner layer of the scale, and thus was oxidized at much lower oxidation rate than that of CA Cu–7.0 Cr with normal grain size. The experimental results indicated that the differences in oxidation behavior between two alloys may be ascribed to the different size and spatial distribution of the second-phase particles and the reactive component contents in localized zone.

Coupling of Local Texture and Microstructure Evolution during Restoration Processes in Aluminum Deformed to Large Strains

2013 ◽  
Vol 753 ◽  
pp. 251-256
Author(s):  
Niels Hansen ◽  
Tian Bo Yu ◽  
Oleg V. Mishin ◽  
Xiao Xu Huang
Keyword(s):  
Rolling Texture ◽  
Large Strains ◽  
Boundary Mobility ◽  
Stored Energy ◽  
Local Texture ◽  
Deformed State ◽  
Cold Rolled ◽  
The Individual ◽  
Kinetics Of

The coupling between local texture and microstructure is analyzed during restoration processes in aluminum cold-rolled to high and ultrahigh strains. The deformed microstructure is composed of lamellae with orientations of rolling texture components that occupy different volume fractions and vary in the spatial distribution. The individual lamellae are separated by low and high angle boundaries and significant local differences are produced in the deformed microstructure both in terms of the stored energy and boundary mobility. These differences influence recovery and recrystallization processes, resulting in significant local variations in mechanisms and kinetics of these processes. The observations suggest that the characterization of the local texture and microstructure both in the deformed state and after annealing is important in order to underpin the analysis of recovery and recrystallization on the sample scale.

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