Results 11 to 20 of about 9,231 (286)
Geometrically Necessary Dislocations on Plastic Deformation of Polycrystalline TRIP Steel [PDF]
Crystals, 2019 In this study, the main deformation behavior in terms of geometrically necessary dislocations (GND) was investigated on a transformation induced plasticity (TRIP) stainless steel by using sharp indentation at nanometric length scale.
Joan Josep Roa +4 more
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Strain-gradient effect on the crack tip dislocations density
Fracture and Structural Integrity, 2020 In this study, the influence of a material’s plastic properties on the crack tip fields and dislocation density behavior is analytically and numerically analyzed using the conventional mechanism-based strain-gradient plasticity (CMSGP) theory established
Valery Shlyannikov +2 more
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Journal of Materials Research and Technology, 2023 Heterostructured materials offer great promise as next-generation structural materials, providing excellent combinations of strength and elongation. However, the need for additional equipment for heterostructuring poses challenges for scalability.
Gang Hee Gu +5 more
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Crystals, 2020 In a recent experimental study of indentation creep, the strain rate sensitivity (SRS) and activation volume v* have been noticed to be dependent on the indentation depth or loading force for face-centered cubic materials.
Xiazi Xiao, Hao Liu, Long Yu
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Resolving geometrically necessary dislocation density onto individual dislocation types using EBSD-based continuum dislocation microscopy [PDF]
International Journal of Plasticity, 2016 Abstract Modeling of plasticity is often hampered by the difficulty in accurately characterizing dislocation density on the microscale for real samples. It is particularly difficult to resolve measured dislocation content onto individual dislocation types at the length scales most commonly of interest in plasticity studies.
T.J. Ruggles, D.T. Fullwood, J.W. Kysar
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Evolution of geometrically necessary dislocation density from computational dislocation dynamics
IOP Conference Series: Materials Science and Engineering, 2009 This paper presents a method for calculating GND densities in dislocation dynamics simulations. Evolution of suitably defined averages of GND density as well as maps showing the spatial nonuniform distribution of GNDs are analyzed under uniaxial loading.
P J Guruprasad, A A Benzerga
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Journal of Materials Research and Technology, 2023 High-density dislocations and nano-twinning are known to significantly influence the work hardening ability of materials, presenting a potent approach for enhancing their overall strength.
Fei Chen +4 more
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Geometrically necessary dislocation densities in olivine obtained using high-angular resolution electron backscatter diffraction [PDF]
, 2016 © 2016 The AuthorsDislocations in geological minerals are fundamental to the creep processes that control large-scale geodynamic phenomena. However, techniques to quantify their densities, distributions, and types over critical subgrain to polycrystal ...
Hansen, L, Wallis, D, Wilkinson, A
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Size-dependent geometrically necessary dislocation structures in single-crystalline tungsten
Journal of Materials Research, 2022 Abstract Wedge indentation experiments were conducted to study the depth dependence of geometrically necessary dislocation (GND) structures in single-crystalline tungsten. Single-crystalline tungsten exhibits a pronounced indentation size effect (ISE), which can be rationalized based on GNDs. The dislocation mechanisms,
Jin Wang +4 more
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Journal of Materials Research and Technology, 2023 It is urgent to explore an efficient treatment strategy to obtain characteristic microstructures for better mechanical properties of alloys in an era of energy shortage.
Yafei Wang +3 more
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