The behaviour of incidental dislocation boundaries and geometrically necessary boundaries during warm tensile deformation of aluminium

Čížek, Pavel; Wynne, B.P.; Parker, B.A.

doi:10.1016/1359-6462(96)00287-4

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…However, GNBs increase their misorientation angle and decrease their spacing at a much higher rate than IDBs do. These structures that were originally defined for cold deformation have also been observed for warm deformation [61,62]. Because of the complexity of deformation structures, different dislocation boundaries have been classified according to a detailed consideration of boundary misorientation, morphology, spacing, crystallographic and macroscopic orientation with respect to the deformation axis.…”

Section: Grain Subdi6isionmentioning

confidence: 99%

Current issues in recrystallization: a review

Doherty¹,

Hughes²,

Humphreys³

et al. 1997

Materials Science and Engineering: A

2,037

623

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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. © 1997 Elsevier Science S.A.

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Section: Grain Subdi6isionmentioning

confidence: 99%

Current issues in recrystallization: a review

Doherty¹,

Hughes²,

Humphreys³

et al. 1997

Materials Science and Engineering: A

2,037

623

View full text Add to dashboard Cite

show abstract

“…The dislocations are one of the most important lattice defects in metals, which play a vital role in the mechanical and physical properties of metals. Deformation microstructure has been widely investigated in aluminum, copper, and steel [5][6][7][8][9][10][11][12]. After high-strain plastic deformations, two dislocation configurations are theoretically observed in deformed microstructure, i. e., (i) statistically stored dislocations and (ii) geometrically necessary dislocations [13,14].…”

Section: Introductionmentioning

confidence: 99%

Statistical analysis and recovery behaviors of dislocations in cold‐rolled and annealed reactor pressure vessel steels

Liu

Wang

et al. 2023

Materialwissenschaft Werkst

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The statistical analysis and recovery behavior of dislocations in cold‐rolled and annealed reactor pressure vessel steels with a thickness reduction of 50 % were investigated by using x‐ray diffraction and electron backscattered diffraction analysis in this study. A new modified Kubin & Mortensen's method was proposed to evaluate the geometrically necessary dislocation density, and this method could effectively improve the accuracy of geometrically necessary dislocation evaluation by eliminating the effect of step size and measurement noises. Comparison analysis between modified Williamson‐Hall and modified Kubin & Mortensen's methods was also performed in this study, which shows different recovery behavior of dislocations. The electron backscattered diffraction results show that geometrically necessary dislocation density remained unchangeable after annealing treatment below and at 550 °C, and it occurred to decrease above 550 °C due to the occurrence of recrystallization. However, dislocations started to migrate and annihilate at 340 °C according to x‐ray diffraction results. A possible explanation is a difference in the effect of pairwise dislocation annihilation on statistically stored dislocations and geometrically necessary dislocations.

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“…Comparison evolution of dislocation microstructures independent of DBs. In the line of succession of References 17 through 19, specifiwith Figure 13 of Reference 42 suggests that the threemicrostructure types are correlated with Ahlborn's three cally Cizek et al [61,62] have conducted some excellent relevant work on the development of angular misorientations fields in the stereographic triangle, also shown in Figure 7, one of them subdivided as indicated by shading. Ahlborn's within grains.…”

mentioning

confidence: 94%

“…This behavior appears to evidence which, if any, were true GNBs. In their follow-up article using highly ͗100͘ textured aluminum at 250 ЊC, [62] be correlated with Hansen and Huang's type 2 microstructure that is composed of roundish cells reminiscent of the ͗100͘ again boundaries are classed into IBs and GNBs with angular component in Reed and McHargue's work. [47] (2) Region the corresponding large-angle "geometrically necessary boundaries," it is possible that the boundaries between adjanear the ͗111͘ ⇒ axis rotates toward ͗111͘.…”

mentioning

confidence: 99%

Deformation bands, the LEDS theory, and their importance in texture development: Part I. Previous evidence and new observations

Kuhlmann‐Wilsdorf

Kulkarni

Moore

et al. 1999

Metall Mater Trans A

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The present state of knowledge regarding "regular" deformation bands (DBs) is reviewed in the light of some recent observations on DBs in compressed polycrystalline aluminum. These are slablike volume elements within which different selections of slip systems operate, always fewer than required for homologous deformation, in opposition to the assumption that grains deform as units which are common to all, the Sachs, the Boas and Schmid, and the Taylor/ Bishop and Hill models. The need for a better integration of this knowledge with not only the origin of deformation textures but also more generally with the theory of plastic deformation is pointed out.

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The behaviour of incidental dislocation boundaries and geometrically necessary boundaries during warm tensile deformation of aluminium

Cited by 12 publications

References 11 publications

Current issues in recrystallization: a review

Current issues in recrystallization: a review

Statistical analysis and recovery behaviors of dislocations in cold‐rolled and annealed reactor pressure vessel steels

Deformation bands, the LEDS theory, and their importance in texture development: Part I. Previous evidence and new observations

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