The current understanding of the fundamentals of recrystallization is summarized. This includes understanding the as-deformed state. Several aspects of recrystallization are described: nucleation and growth, the development of misorientation during deformation, continuous, dynamic, and geometric dynamic recrystallization, particle effects, and texture. This article is authored by the leading experts in these areas. The subjects are discussed individually and recommendations for further study are listed in the final section.

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Current issues in recrystallization: a review

Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions

Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications

https://material.karlov.mff.cuni.cz/people/janecek/studenti/FyzMetNano/Estrin_AM61_2013_782.pdf

Extreme grain refinement by severe plastic deformation: A wealth of challenging science

Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B

Correlation of plastic deformation and dynamic recrystallization in magnesium alloy ZK60

As a consequence of the high critical stresses required for the activation of non-basal slip systems, dynamic recrystallization plays a vital role in the deformation of magnesium, particularly at a deformation temperature of 200 °C, where a transition from brittle to ductile behavior is observed. Uniaxial compression tests were performed on an extruded commercial magnesium alloy AZ31 at different temperatures and strain rates to examine the influence of deformation conditions on the dynamic recrystallization (DRX) behavior and texture evolution. Furthermore, the role of the starting texture in the development of the final DRX grain size was investigated. The recrystallized grain size, measured at large strains (ɛ ∼ −1.4) seemed to be more dependent on the deformation conditions than on the starting texture. In contrast to pure magnesium, AZ31 does not undergo grain growth at elevated deformation temperatures, i.e. 400 °C, even at a low strain rate of 10−4 s−1. Certain deformation conditions gave rise to a desired fully recrystallized microstructure with an average grain size of ∼18 μm and an almost random crystallographic texture. For samples deformed at 200 °C/10−2 s−1, optical microscopy revealed DRX inside of deformation twins, which was further investigated by EBSD.

Dynamic recrystallization during high temperature deformation of magnesium

Necklace formation during dynamic recrystallization: mechanisms and impact on flow behavior

The deformation behavior, texture and microstructure evolution of six sample types of a commercial magnesium alloy AZ31 with different processing histories were investigated during plane strain compression at room temperature using a channel-die device. Although all the samples were deformed under the same conditions, i.e. temperature and strain rate, the initial state of the samples prior to deformation was responsible for the final texture and microstructure. Stress–strain curves showed a maximum ductility of 28% for the sample with a hot rolling history. EBSD analysis was carried out to give a better insight into the operating deformation mechanisms. Besides the expected { 1 0 1 ¯ 2 } -tensile twinning, { 1 0 1 ¯ 1 } -compression twinning and { 1 0 1 ¯ 1 } − { 1 0 1 ¯ 2 } -double twinning were also observed in some specimens and were correlated to microcrack formation, which caused an early shear failure.

G. Gottstein

Papers

Correlation of plastic deformation and dynamic recrystallization in magnesium alloy ZK60

Dynamic recrystallization during high temperature deformation of magnesium

Necklace formation during dynamic recrystallization: mechanisms and impact on flow behavior

Room temperature formability of a magnesium AZ31 alloy: Examining the role of texture on the deformation mechanisms

Softening and dynamic recrystallization in magnesium single crystals during c-axis compression