Analysis of an aluminum single crystal with unstable initial orientation (001) [110] in channel die compression

Becker, Richard; Butler, J. F.; Hu, Hsun; Lalli, L. A.

doi:10.1007/bf03350948

Cited by 95 publications

(59 citation statements)

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“…Macro-scale layered structures. For very coarse, roughly >500pm, diameter grains, multicrystals, bicrystals or single crystals, it has been repeatable observed from the time of Barrett and Levenson (1940), e.g., see, also (Wonsiewicz and Chin 1970;Malin, Huber and Hatherly 198 1;Akef and Driver 1991;Becker, Butler, Hu and Lalli 1991;Liu and Hansen 1998), that a number of "crystals" develop large scale layers or bands during deformation which may be observed optically (Fig. 2).…”

Section: 1mentioning

confidence: 70%

“…The scale of these bands may be from tens of micrometers to millimeters in length and micrometers to 100 micrometers wide. These bands have been variously named deformation bands, transition bands, matrix bands, bands of secondary slip and kink bands (Barrett and Levenjon 1940;Cahn 1951;Honeycomb 1951;Calnan 1952;Dillamore and Katoh 197A Malin et al 1981;Akef and Driver 1991;Becker et al 1991;Liu and Hansen 1998). This range of names reflects in part the nature or origin of the bands.…”

Section: 1mentioning

confidence: 99%

“…The level of heterogeneity may be high, especially in the layered structures developed in crystals whose nominal deformed orientations differs substantially from its initial orientation. Examples include the previous compressed [421] crystal and channel die deformed rotated cube and cube oriented crystals (Becker et al 1991;Liu and Hansen 1998). At the other extreme, the structure may be fairly homogeneous throughout.…”

Section: )mentioning

confidence: 99%

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Deformation microstructures and selected examples of their recrystallization

Hughes

2001

Surface & Interface Analysis

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The elements that are needed to describe a deformation structure—grains, grain boundaries, macroscale banding within crystals, cell blocks, geometrically necessary boundaries and incidental dislocation boundaries (cell boundaries)—are presented and described for fcc metals and alloys of medium to high stacking fault energy. Pertinent to this quantitative description are the local orientations, structural morphology, different boundary misorientations and spacings as a function of strain and deformation conditions. Three specific examples are given in which particular aspects of the deformation structure are shown to direct the recrystallization behavior. Copyright © 2001 John Wiley & Sons, Ltd; first published by Risø National Laboratory.

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Section: 1mentioning

confidence: 70%

Section: 1mentioning

confidence: 99%

Section: )mentioning

confidence: 99%

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Deformation microstructures and selected examples of their recrystallization

Hughes

2001

Surface & Interface Analysis

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“…However, Y and P texture components were formed by the lift-up procedure in the non-bonded zone. Y and P texture components are plastic deformation textures such as torsion [27,28], tension [29,30], rolling [31][32][33], and deep drawing [34,35]. Figure 10 shows the band contrast overlaid with inverse pole figure maps for each harsh test.…”

Section: Transition Of the Texturementioning

confidence: 99%

Heel crack propagation mechanism of cold-rolled Cu/Al clad ribbon bonding in harsh environment

Park

Nagao

Sugahara

et al. 2015

J Mater Sci: Mater Electron

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A cold-rolled Cu/Al clad ribbon was bonded on an electroless nickel immersion gold (ENIG)-finished Cu substrate by ultrasonic bonding. The bonding samples were subjected to harsh conditions such as thermal exposure at 200°C and thermal shock at -40/250°C. The microstructural evolution and textural transitions in the Cu/Al clad ribbons were analyzed using electron backscatter diffraction to understand the heel crack propagation mechanism. The heel cracks were initiated at the edge of the Al layer between the bonded and non-bonded zones and were propagated along the coarsened grain boundaries deep into the cladded Cu layer. The continuous dynamic recrystallization (CDRX) transition phenomena around the heel cracks were scrutinized by electron backscatter pattern analysis to reveal the different microstructural and textural evolutions as a function of the ultrasonic bonding process at the bonded part and of lift-up at the non-bonded part. The heel cracks were occurred by grain coarsening due to CDRX within the Al layer during the environmental tests. The region of coarsened grains by CDRX was extended with increasing test periods. Especially in the thermal shock tests at -40/250°C, severe grain coarsening was found involving significant transformation of sub-grains into grains by rapid CDRX development. Thus, heel crack propagation accelerated more during thermal shock cycles than during high-temperature storage.

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“…[13][14][15] In addition, microstructure-based computational simulations such as crystal plasticity finite element methods (CP-FEM) [16][17][18][19] and crystal plasticity fast Fourier transform-based model [13,20] have supported experimental proofs, and predicted how materials are deformed under external deformation conditions. Especially, recent investigations have used the 3D reconstructed microstructure obtained from by EBSD combined with focused ion beam, or synchrotron X-ray microtomography as an initial microstructure for the simulation.…”

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confidence: 99%

Observation of Micro-scale Surface Morphology with Microtexture Development During Plane Strain Tensile Deformation in AZ31 Magnesium Alloy

Lee

Kim

et al. 2014

Metall Mater Trans A

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The change of microstructure including microtexture and surface morphology in AZ31 magnesium alloy under plane strain tension was investigated by 3D observation combined confocal microscope and highresolution electron backscattered diffraction. Microscale changes in the surface morphology were observed on the area including 1012 È É h1011i tensile twin bands. The mechanism for surface morphology variation was discussed with the nucleation of tensile twinning and the strain partitioning caused by continuing deformation after the nucleation of the twins.

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Analysis of an aluminum single crystal with unstable initial orientation (001) [110] in channel die compression

Cited by 95 publications

References 9 publications

Deformation microstructures and selected examples of their recrystallization

Deformation microstructures and selected examples of their recrystallization

Heel crack propagation mechanism of cold-rolled Cu/Al clad ribbon bonding in harsh environment

Observation of Micro-scale Surface Morphology with Microtexture Development During Plane Strain Tensile Deformation in AZ31 Magnesium Alloy

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