Formation of nano-laminated structure in nickel by means of surface mechanical grinding treatment

Liu, X.C.; Zhang, H.W.; Lu, K.

doi:10.1016/j.actamat.2015.06.014

Cited by 205 publications

(48 citation statements)

References 46 publications

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“…Surface mechanical grinding treatment (SMGT)1516 or sliding friction treatment (SFT)171819 with quite high strain rate of about 10 3 –10 4 s −1 is a favorable severe plastic deformation (SPD) method that can generate a solid layer of nanocrystalline structure on the metal surface. Recently, NC Ta surface with an average grain size of ≤20 nm has been successfully manufactured through the SFT technique developed by us171819.…”

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confidence: 99%

Significantly enhanced osteoblast response to nano-grained pure tantalum

Huo

Zhao

et al. 2017

Sci Rep

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Tantalum (Ta) metal is receiving increasing interest as biomaterial for load-bearing orthopedic applications and the synthetic properties of Ta can be tailored by altering its grain structures. This study evaluates the capability of sliding friction treatment (SFT) technique to modulate the comprehensive performances of pure Ta. Specifically, novel nanocrystalline (NC) surface with extremely small grains (average grain size of ≤20 nm) was fabricated on conventional coarse-grained (CG) Ta by SFT. It shows that NC surface possessed higher surface hydrophilicity and enhanced corrosion resistance than CG surface. Additionally, the NC surface adsorbed a notably higher percentage of protein as compared to CG surface. The in vitro results indicated that in the initial culture stages (up to 24 h), the NC surface exhibited considerably enhanced osteoblast adherence and spreading, consistent with demonstrated superior hydrophilicity on NC surface. Furthermore, within the 14 days culture period, NC Ta surface exhibited a remarkable enhancement in osteoblast cell proliferation, maturation and mineralization as compared to CG surface. Ultimately, the improved osteoblast functions together with the good mechanical and anti-corrosion properties render the SFT-processed Ta a promising alternative for the load-bearing bone implant applications.

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confidence: 99%

Significantly enhanced osteoblast response to nano-grained pure tantalum

Huo

Zhao

et al. 2017

Sci Rep

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“…The parallel LAMMPS software package is employed for simulation [34]. The x, y, z axes of simulation box are along the [111], [-1-12], and [1][2][3][4][5][6][7][8][9][10] crystallographic orientations, respectively. In order to study the dependence of the deformation behaviour on the crystallographic orientation of NW, we rotate the atoms around the z-axis to 0°, 30°, 60°, 90°, 120°, respectively.…”

Section: Atomic Modellingmentioning

confidence: 99%

“…In recent years, nanoscale metal materials have attracted extensive interest due to superior mechanical, magnetic and thermal properties [1][2][3][4]. Nanowire (NW), as one of the most representative low-dimensional nanostructured materials, has widely used in various fields [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effects of crystal orientation and temperature on the deformation mechanism and mechanical property of Cu nanowire

Pang

Lin

et al. 2020

Micro & Nano Letters

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The effects of crystallographic direction and temperature on the deformation mechanism and properties of Cu nanowire (NW) are studied via systematic simulations and theoretical analysis. It is found that the elastic module, yield stress and yield strain are quite different for five oriented NWs. As the crystallographic orientation of NW varies, both the yield stress and the yield strain firstly reduce to the minimum value, then gradually increase. Furthermore, the evolutions of flow stress after yield point are also obviously different for five oriented NWs, which are associated with the plastic deformation mechanisms. With the crystallographic orientation of NW varying, the simulated atomic snapshots show that the dominant deformation mechanism transforms from the shuffling-assisted single dislocation-nucleation to the collective dislocation-nucleation, then to the twinning migration, and finally to the combination of dislocation glide and microtwinning. According to the normal stress perpendicular to the slip plane and shear stress on the slip plane, the authors theoretically predict the deformation mechanisms for different oriented NWs, which turn to be in good consistent with the authors' observed deformation mechanisms. Besides, they also propose that the temperature effects are different for different oriented NWs.

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“…The various processing methods used to make HLs can induce different textures. Liu et al [4,5] found that {100} < 011 > was the dominant texture component, along with minor components {111} < 112 > and {111} < 110 > in nano-laminated nickel synthesized via surface mechanical grinding treatment (SMGT). In contrast, Fang et al [6] reported a random crystallographic texture in the topmost layer of gradient nanograined Cu samples, also processed by SMGT.…”

Section: Introductionmentioning

confidence: 99%

Homogenization of plastic deformation in heterogeneous lamella structures

Yuan

Beyerlein

Zhou

2016

Materials Research Letters

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It has been shown that unlike its constituent nanocrystalline (NC) phase, a heterogeneous lamella (HL) composite comprising NC and coarse-grain layers exhibits greatly improved ductility. To understand the origin of this enhancement, we present a 3D discrete dislocation, crystal plasticity finite element model to study the development of strains across this microstructure. Here we show that the HL structure homogenizes the plastic strains in the NC layer, weakening the effect of strain concentrations. These findings can provide valuable insight into the effects of material length scales on material instabilities, which is needed to design heterogeneous structures with superior properties. IMPACT STATEMENT Our work reveals that the coarse-grain layer of a severely heterogeneous lamella composite homogenizes deformation in the nanocrystalline layer, resulting in the enhanced ductility for which this composite is renowned.

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Formation of nano-laminated structure in nickel by means of surface mechanical grinding treatment

Cited by 205 publications

References 46 publications

Significantly enhanced osteoblast response to nano-grained pure tantalum

Significantly enhanced osteoblast response to nano-grained pure tantalum

Effects of crystal orientation and temperature on the deformation mechanism and mechanical property of Cu nanowire

Homogenization of plastic deformation in heterogeneous lamella structures

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