A review of slip transfer: applications of mesoscale techniques

Hunter, Abigail; Leu, Brandon; Beyerlein, Irene J.

doi:10.1007/s10853-017-1844-5

Cited by 27 publications

(9 citation statements)

References 88 publications

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“…A schematic illustration of the dislocation mechanisms operative in different length scale regimes is given in Figure . With decreasing layer thickness starting in the micron range the dominant deformation mechanisms change from dislocation pile‐up to confined layer slip (CLS) of dislocations (<50 nm) and finally to interface crossing of dislocations (slip transfer) (<2.5 nm) leading to strain localization that limits the uniform deformability . These mechanisms may be transferred to ARB by considering the peculiarities of interface‐mediated plasticity.…”

Section: Selected Arb Systemsmentioning

confidence: 99%

Microstructure, Texture, and Mechanical Properties of Laminar Metal Composites Produced by Accumulative Roll Bonding

et al. 2018

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The paper aims to summarize the research on Laminar Metal Composites produced by Accumulative Roll Bonding. After some notes on the general subject, frequent material combinations and the issue of bonding are addressed. Then, the evolution of microstructure, texture, and mechanical properties typically observed in such materials is briefly summarized. Furthermore, the crucial aspect of layer continuity is discussed. In the main part, detailed experimental insight is provided for three representatives of different structural developments, namely Al2N/Al5N, Cu/Nb, and Ti/Al. The chosen systems represent different levels of component dissimilarity, as Al2N/Al5N is a combination of the same face centered cubic metal with varying purity while Cu/Nb and Ti/Al are combinations of face centered cubic with both body centered cubic and hexagonal close packed metals, respectively. As the layer thicknesses span different ranges, the composites also illustrate both the opportunities and experimental challenges of ARB Laminar Metal Composites.bonding (in the following, those processes will be referred to "ARB"), often supplemented by annealing and rolling steps. Naturally, a high percentage of the scientific attention regarding LMCs is bestowed on Al alloys, for example, [7,25,[43][44][45][46][47][48][49][50] whose assets are excellent formability and corrosion resistance while being low in both weight and price.Al alloys are frequently combined in order to improve specific properties, for example, [51][52][53][54][55] A strong but corrosion susceptible Al alloy of series 2xxx, for example, benefits from the combination with a less strong but corrosion resistant alloy of series 6xxx. [50] Likewise, in LMCs of series 5xxx and 6xxx, both surface quality and weldability are improved due to the reduction of the PLC-effect [53] and hot cracking, [55] respectively.By combining Al with both Fe [56][57][58] or Cu, [45,59] the magnetic properties of the former and the electrical properties of the latter can be used to produce LMCs with potential in microelectronics and in electrical power industry, [60] respectively. Other components in LMCs with Cu are Ag, [61] Zn, [62] both Zn and Al, [63] and both Al and Ni. [64] Nb receives major scientific attention due to its superconducting properties, which work especially well in a finelayered structure with Cu or Al, [65] which are chosen for their low solubility in Nb and the absence of mutual intermetallics. In contrast, other LMCs are produced especially for intermetallic transition, for instance Al/Fe, [57,58,66] Al/Mg, [43,44] Al/Ti, [67][68][69][70][71] Al/Ni, [72,73] Ti/Nb, [74] or Ti/Al/Nb. [74] When high specific strength in combination with sufficient formability and ductility is the foremost requirement, Al is often combined with high-strength partners such as steel, for example, [66,75] Mg, for example, [46,76,49] Ti, for example, [67][68][69]74,[77][78][79][80][81][82][83][84][85][86] as well as both Mg and Ti. [87] Furthermore, Ti is paired with Fe, [88,89] Cu, for example, [90,...

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Section: Selected Arb Systemsmentioning

confidence: 99%

Microstructure, Texture, and Mechanical Properties of Laminar Metal Composites Produced by Accumulative Roll Bonding

et al. 2018

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“…Based on many experimental results, there are mainly four mechanisms of dislocation-GB interactions which have been studied: dislocation transmission across GB [12], GB as a dislocation source for lattice dislocation [13], formation of a dislocation pile-up [4] and dislocation absorption at GB [14]. The dislocation transmission is largely investigated through the geometrical transmission factor as reviewed by Bayerschen et al [15] and the critical stress for transmission as reviewed by Hunter et al [16]. The geometrical transmission factor has been firstly proposed by Livingston and Chalmers [17] considering only slip system orientations.…”

Section: Introductionmentioning

confidence: 99%

Atomic Force Microscopy Study of Discrete Dislocation Pile-ups at Grain Boundaries in Bi-Crystalline Micro-Pillars

2020

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Compression tests at low strains were performed to theoretically analyze the effects of anisotropic elasticity, misorientation, grain boundary (GB) stiffness, interfacial dislocations, free surfaces, and critical force on dislocation pile-ups in micro-sized Face-Centered Cubic (FCC) Nickel (Ni) and α -Brass bi-crystals. The spatial variations of slip heights due to localized slip bands terminating at GB were measured by Atomic Force Microscopy (AFM) to determine the Burgers vector distributions in the dislocation pile-ups. These distributions were then simulated by discrete pile-up micromechanical calculations in anisotropic bi-crystals consistent with the experimentally measured material parameters. The computations were based on the image decomposition method considering the effects of interphase GB and free surfaces in multilayered materials. For Ni and α -Brass, it was found that the best predicted step height spatial profiles were obtained considering anisotropic elasticity, free surface effects, a homogeneous external stress and a certain critical force in the material to equilibrate the dislocation pile-ups.

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“…Despite this, most PFDD studies have focused on modeling dislocations in FCC materials, with a few modeling BCC dislocations [BH16,MKO11]. In FCC metals, PFDD studies have considered not only perfect dislocations but also partial dislocations [BH16,HZB14,HBGK11], heterophase interfaces [ZHBK16,HLB18], and deformation twinning [HB14a,HB15]. In recent years, they have successfully been advanced to model grain boundary sliding [KWLL11], grain boundary dislocation nucleation [HB14b,HZB14], glide in high entropy alloys [ZCK19], texture effects in thin films [CSPK17], formation and glide of partial dislocations in polycrystals [CHBK15], the presence of void space [LMK13], and slip transfer across biphase boundaries [ZHBK16,HLB18], again, all for FCC metals.…”

Section: Introductionmentioning

confidence: 99%

A 3D phase field dislocation dynamics model for body-centered cubic crystals

Peng

Mathew

Beyerlein

et al. 2020

Computational Materials Science

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In this work, we present a 3D Phase Field Dislocation Dynamics (PFDD) model for body-centered cubic (BCC) metals. The model formulation is extended to account for the dependence of the Peierls barrier on the line-character of the dislocation. Simulations of the expansion of a dislocation loop belonging to the {110} 111 slip system are presented with direct comparison to Molecular Statics (MS) simulations. The extended PFDD model is able to capture the salient features of dislocation loop expansion predicted by MS simulations. The model is also applied to simulate the motion of a straight screw dislocation through kink-pair motion. *

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A review of slip transfer: applications of mesoscale techniques

Cited by 27 publications

References 88 publications

Microstructure, Texture, and Mechanical Properties of Laminar Metal Composites Produced by Accumulative Roll Bonding

Microstructure, Texture, and Mechanical Properties of Laminar Metal Composites Produced by Accumulative Roll Bonding

Atomic Force Microscopy Study of Discrete Dislocation Pile-ups at Grain Boundaries in Bi-Crystalline Micro-Pillars

A 3D phase field dislocation dynamics model for body-centered cubic crystals

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