Advanced processing of EBSD data to distinguish the complex microstructure evolution of a Cu-Ni-Si alloy induced by fatigue

Bouquerel, Jérémie; Delbove, Maxime; Vogt, Jean

doi:10.1016/j.matchar.2018.09.017

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…In recent years, electron backscatter diffraction (EBSD) has been used to analyze the cells, sub-grains 11,12 , and other dislocation microstructures 13,14 . In particular, the Kernel average misorientation (KAM) 15 , grain reference orientation deviation (GROD) 16,17 , and grain orientation spread (GOS) 18 are obtained from the grain orientation via EBSD measurements, which can be used to qualitatively evaluate the degree of plastic deformation within the grains 19 . KAM focuses on the local misorientation gradients, while the geometrically necessary dislocation (GND) can obtain from the KAM value 3,8,15,20 .…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Dislocation Structure in a Nb-bearing Austenitic Stainless Steel After Low Cycle Fatigue via TEM and EBSD

Fang

Wei

et al. 2022

Mat. Res.

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In this paper, the relationship between Kernel average misorientation (KAM), geometrically necessary dislocation (GND) density and dislocation structures of Nb-bearing austenitic stainless steel under low cycle fatigue (LCF) was studied at 600°C at the total strain amplitude ranged from 0.3% to 1.0%. The results based on EBSD analysis show that the GND density in fatigue specimens gradually increases with the increase of strain amplitude. Under LCF loading, the dislocation structures are mainly planar slip bands (PSBs) and the cell structures. With the increase of strain amplitude, the number of PSBs increases with decrease in width, and the average diameter of cells also decreases. The PSBs originate due to the dynamic strain aging (DSA) effect, and DSA is more significant under high strain amplitude. The average diameter of cell structures has a specific relationship with GND density.

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Section: Introductionmentioning

confidence: 99%

“…GROD appears as a hybrid approach, which measures the local misorientations at a grain scale. Finally, GOS focus on the strain distribution gradients at the microstructure scale 18 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of Dislocation Structure in a Nb-bearing Austenitic Stainless Steel After Low Cycle Fatigue via TEM and EBSD

Fang

Wei

et al. 2022

Mat. Res.

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“…In the last decade, electron backscatter diffraction analysis combined with scanning electron microscopy has become a powerful technique to characterize microstructural 15 features in ((poly)crystalline materials [49][50][51][52][53][54]. This technique has been used by researchers in order to quantify the degree of plastic deformation or damage from the local changes in the lattice orientations [55][56][57][58][59]. However, most of the studies are limited to single phase materials.…”

Section: Introductionmentioning

confidence: 99%

Damage in dual phase steels

Asik¹

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This chapter investigates the heterogeneity of plastic deformation in a commercial dual phase steel by means of evolution of lattice orientations and their gradients. Interrupted tensile tests are conducted in the macroscopically uniform region of plastic deformation in a tensile test and electron backscatter diffraction (EBSD) analysis is carried out on the deformed samples. The EBSD data is evaluated in terms of grain reference orientation deviation (GROD), grain orientation spread (GOS) and kernel average misorientation (KAM) values. The misorientation measures, GROD and GOS, quantify the inhomogeneity of plastic deformation within a grain while KAM is used to quantify the geometrically necessary dislocations. Moreover, EBSD analysis is carried out in the vicinity of voids in order to establish a link to damage initiation.

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Prolonged fatigue life in aluminum clad steel by electropulsing treatment: Retardation of interface-microcrack formation

Zhang

Geng²,

Kim³

et al. 2023

International Journal of Fatigue

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Advanced processing of EBSD data to distinguish the complex microstructure evolution of a Cu-Ni-Si alloy induced by fatigue

Cited by 9 publications

References 39 publications

Characterization of Dislocation Structure in a Nb-bearing Austenitic Stainless Steel After Low Cycle Fatigue via TEM and EBSD

Characterization of Dislocation Structure in a Nb-bearing Austenitic Stainless Steel After Low Cycle Fatigue via TEM and EBSD

Damage in dual phase steels

Prolonged fatigue life in aluminum clad steel by electropulsing treatment: Retardation of interface-microcrack formation

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