Overcoming the drawbacks of plastic strain estimation based on KAM

Shen, Rickard; Efsing, Pål

doi:10.1016/j.ultramic.2017.08.013

Cited by 59 publications

(14 citation statements)

References 18 publications

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“…Specifically, the average KAM KAM value represents the extent of plastic deformation. The higher the value, the more serious the plastic deformation [27,28]. As shown in Fig.…”

Section: Strain Distributionmentioning

confidence: 96%

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Meng

Luo

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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A novel method of pulsed magnetic field (PMF) treatment was developed to eliminate the residual stress of rolled magnesium alloy AZ31 sheet in this study. The effect of PMF on residual stress of rolled AZ31 sheet was investigated and its mechanism was analyzed. The experimental results revealed that the pulse frequency had a significant impact on residual stress. After 10.0 Hz PMF treatment, the average and maximum reduction rates of residual stress along the rolled direction were 26.6% and 30.3%, respectively. It was found that the dislocation density and parallel dislocation in grains of the rolled sheet increased after it was treated by the pulsed magnetic field. The simulation results showed that the Lorentz force generated by the pulsed magnetic field can lead to basal slip, thereby resulting in local plastic deformation. Besides, the Joule heat produced during the PMF treatment was conducive to the elimination of residual stress.

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“…Specifically, the average KAM KAM value represents the extent of plastic deformation. The higher the value, the more serious the plastic deformation [27,28]. As shown in Fig.…”

Section: Strain Distributionmentioning

confidence: 96%

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Meng

Luo

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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“…13(c) and (f). GOS figure is a favorable qualitative indicator to assess the plastic strain of material [24]. Furthermore, residual stress can be indirectly described by GOS to heterogeneous deformation of grains from high internal stress during welding [21].…”

Section: Grain Morphologymentioning

confidence: 99%

Microstructure and mechanical properties of aluminum-steel dissimilar metal welded using arc and friction stir hybrid welding

Liu

Wang

et al. 2023

Materials & Design

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“…Recently, several authors revisited the possibilities to measure dislocation densities using EBSD. Shen and Efsing, in there small review, [399] concluded that the metric ''grain orientation spread,'' GOS, gives more reliable results than the KAM approach. It should be mentioned here, however, that both, KAM and GOS, only quantify GND densities, which are, in principle, only a measure of the heterogeneity of strain and not of the true total strain in a given microstructure area.…”

Section: Dislocation Density Measurements In Dual-phase Steels Using mentioning

confidence: 99%

Current Challenges and Opportunities in Microstructure-Related Properties of Advanced High-Strength Steels

Raabe

Sun

Silva

et al. 2020

Metall Mater Trans A

151

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This is a viewpoint paper on recent progress in the understanding of the microstructure–property relations of advanced high-strength steels (AHSS). These alloys constitute a class of high-strength, formable steels that are designed mainly as sheet products for the transportation sector. AHSS have often very complex and hierarchical microstructures consisting of ferrite, austenite, bainite, or martensite matrix or of duplex or even multiphase mixtures of these constituents, sometimes enriched with precipitates. This complexity makes it challenging to establish reliable and mechanism-based microstructure–property relationships. A number of excellent studies already exist about the different types of AHSS (such as dual-phase steels, complex phase steels, transformation-induced plasticity steels, twinning-induced plasticity steels, bainitic steels, quenching and partitioning steels, press hardening steels, etc.) and several overviews appeared in which their engineering features related to mechanical properties and forming were discussed. This article reviews recent progress in the understanding of microstructures and alloy design in this field, placing particular attention on the deformation and strain hardening mechanisms of Mn-containing steels that utilize complex dislocation substructures, nanoscale precipitation patterns, deformation-driven transformation, and twinning effects. Recent developments on microalloyed nanoprecipitation hardened and press hardening steels are also reviewed. Besides providing a critical discussion of their microstructures and properties, vital features such as their resistance to hydrogen embrittlement and damage formation are also evaluated. We also present latest progress in advanced characterization and modeling techniques applied to AHSS. Finally, emerging topics such as machine learning, through-process simulation, and additive manufacturing of AHSS are discussed. The aim of this viewpoint is to identify similarities in the deformation and damage mechanisms among these various types of advanced steels and to use these observations for their further development and maturation.

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Overcoming the drawbacks of plastic strain estimation based on KAM

Cited by 59 publications

References 18 publications

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Microstructure and mechanical properties of aluminum-steel dissimilar metal welded using arc and friction stir hybrid welding

Current Challenges and Opportunities in Microstructure-Related Properties of Advanced High-Strength Steels

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