Role of crystallographic misorientations in the evolution of texture in FCC metals

Резник, П. Л.; Зорина, М. А.; Лобанов, М. Л.

doi:10.1016/j.matpr.2019.07.031

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…Thereby, by the AA6082-T6 aluminium alloy stereographic projection of crystal planes, misorientation is revealed for multiple points, distinguishable by different colours, compared with the default colours of the unit IPF triangle as the crystal directions of the normal sample. This colour mapping can clearly illustrate the crystallographic directions of the crystal lattice for grains and grain-boundaries, displaying the grain misorientation in a spatial and angular distribution through the polycrystalline texture [47,53,54].…”

Section: Ebsd General Texture Evaluationmentioning

confidence: 99%

EBSD Characterization of Bobbin Friction Stir Welding of AA6082-T6 Aluminium Alloy

Tamadon

Pons

Clucas

2020

Advances in Materials Science

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Electron Backscatter Diffraction (EBSD) was used to determine microstructural evolution in AA6082-T6 welds processed by the Bobbin Friction Stir Welding (BFSW). This revealed details of grain-boundaries in different regions of the weld microstructure. Different polycrystalline transformations were observed through the weld texture. The Stirring Zone (SZ) underwent severe grain fragmentation and a uniform Dynamic Recrystallisation (DRX). The transition region experienced stored strain which changed the grain size and morphology via sub-grain-boundary transformations. Other observations were of micro-cracks, the presence of oxidization, and the presence of strain hardening associated with precipitates. Flow-arms in welds are caused by DRX processes including shear, and low and high angle grain boundaries. Welding variables affect internal flow which affects microstructural integrity. The shear deformation induced by the pin causes a non-uniform thermal and strain gradient across the weld region, leading to formation of mixed state transformation of grain morphologies through the polycrystalline structure. The grain boundary mapping represents the differences in DRX mechanism I different regions of the weld, elucidates by the consequences of the thermomechanical nature of the weld. The EBSD micrographs indicated that the localised stored strain at the boundary regions of the weld (e.g. flow-arms) has a more distinct effect in emergence of thermomechanical nonuniformities within the DRX microstructure.

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Section: Ebsd General Texture Evaluationmentioning

confidence: 99%

EBSD Characterization of Bobbin Friction Stir Welding of AA6082-T6 Aluminium Alloy

Tamadon

Pons

Clucas

2020

Advances in Materials Science

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Grain design in ultra-fine Al wire with remarkable combination of strength and conductivity: Ultra-fine-long grains with super strong 〈111〉 texture

Wang,

Hou,

Zhang

et al. 2024

Scripta Materialia

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The Spectrum of Crystallographic Misorientations of Intercrystalline Boundaries for BCC-HCP Phase Transformation in Additively Manufactured Ti-6Al-4V

Редикульцев

Stepanov

Лобанов

2021

DDF

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Electron backscatter diffraction is a modern experimental method for local structure and texture investigation, which makes it possible to establish the presence and types of the various boundaries between the elements of the mesostructure such as low or high angle, special and interphase boundaries. Moreover, this technique can demonstrate the migration of boundaries during structural and phase transformations. This study estimated the possible spectrum of crystallographic misorientations of intercrystalline boundaries in additively manufactured titanium alloy Ti-6Al-4V using orientation microscopy and crystallographic calculations based on Burgers orientation relationship during β→α-transformation. The study has established that the boundaries between grains of α-phase are characterized by the misorientation angles of 11±2 °, 61±5 °, 89±3 °. The majority of high-angle boundaries are characterized by misorientation angles in the range of 57-65 °. The study also ascertained that the experimental spectrum of intercrystalline boundaries in the α-phase reveals the displacive nature of β→α-transformation in titanium alloys.

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Role of crystallographic misorientations in the evolution of texture in FCC metals

Cited by 3 publications

References 18 publications

EBSD Characterization of Bobbin Friction Stir Welding of AA6082-T6 Aluminium Alloy

EBSD Characterization of Bobbin Friction Stir Welding of AA6082-T6 Aluminium Alloy

Grain design in ultra-fine Al wire with remarkable combination of strength and conductivity: Ultra-fine-long grains with super strong 〈111〉 texture

The Spectrum of Crystallographic Misorientations of Intercrystalline Boundaries for BCC-HCP Phase Transformation in Additively Manufactured Ti-6Al-4V

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