Structure and mechanical properties of Cu-X (X = Nb,Cr,Ni) nanolayered composites

Misra, Amit; Verdier, M.; Lu, Yeqing; Kung, H.; Mitchell, T. E.; Nastasi, M.; Embury, J.D.

doi:10.1016/s1359-6462(98)00196-1

Cited by 374 publications

(154 citation statements)

References 16 publications

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“…3,4 Hence, a combination of multilayer and Orowan hardening is suggested as the underlying mechanisms of the higher hardness. [29][30][31] A clear indication that this results in a Hall-Petch type dependency is presented in Fig. 9 where the hardness versus the layer period shows a negative linear relationship, similar to what has been reported for other multilayered thin films.…”

Section: B Influence Of Multilayer Period and Heat Treatments On Thesupporting

confidence: 83%

Thermally enhanced mechanical properties of arc evaporated Ti0.34Al0.66N/TiN multilayer coatings

Knutsson

Johansson

Karlsson³

et al. 2010

Journal of Applied Physics

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Cubic metastable Ti 0.34 Al 0.66 N / TiN multilayer coatings of three different periods, 25+ 50, 12+ 25, and 6 + 12 nm, and monoliths of Ti 0.34 Al 0.66 N and TiN where grown by reactive arc evaporation. Differential scanning calorimetry reveals that the isostructural spinodal decomposition to AlN and TiN in the multilayers starts at a lower temperature compared to the monolithic TiAlN, while the subsequent transformation from c-AlN to h-AlN is delayed to higher temperatures. Mechanical testing by nanoindentation reveals that, despite the 60 vol % TiN, the as-deposited multilayers show similar or slightly higher hardness than the monolithic Ti 0.34 Al 0.66 N. In addition, the multilayers show a more pronounced age hardening compared to the monolith. The enhanced hardening phenomena and improved thermal stability of the multilayer coatings are discussed in terms of particle confinement and coherency stresses from the neighboring TiN-layers.

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Section: B Influence Of Multilayer Period and Heat Treatments On Thesupporting

confidence: 83%

Thermally enhanced mechanical properties of arc evaporated Ti0.34Al0.66N/TiN multilayer coatings

Knutsson

Johansson

Karlsson³

et al. 2010

Journal of Applied Physics

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“…Since Cu and Ni are both FCC materials and the lattice constants are within 3% of each other, this combined effect can promote epitaxial growth across the interface, leading to the desired coherent interface. Previous studies have also shown that epitaxial growth is possible between Cu/Ni multilayers deposited using magnetron sputtering, [10][11][12][13] further supporting the assumption that these layers are deposited with coherent interfaces.…”

supporting

confidence: 54%

Coherent Interfaces Increase Strain-Hardening Behavior in Tri-Component Nano-Scale Metallic Multilayer Thin Films

Schoeppner

Wheeler

Zechner

et al. 2015

Materials Research Letters

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“…When h is reduced below ~ 5 nm, dislocations transmission across interfaces becomes the dominant mechanism responsible for the strength of NMMs [16,17]. At this small length scale the strength becomes independent of h and typically reaches a plateau for incoherent systems [25][26][27] or softening for coherent systems due to the formation of transparent (to dislocation transmission) interfaces [27,28].…”

mentioning

confidence: 99%

Combined size and texture-dependent deformation and strengthening mechanisms in Zr/Nb nano-multilayers

Callisti

Polcar

2017

Acta Materialia

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A combination of transmission electron microscopy analyses and nanomechanical measurements was performed in this study to reveal deformation and strengthening mechanisms occurring in sputtered Zr/Nb nanoscale metallic multilayers (NMMs) with a periodicity (L) in the range 6 -167 nm. Electron diffraction analyses revealed a change in the crystallographic orientation of α-Zr when L ≤ 27 nm, while Nb structure retained the same orientations regardless of L. For L > 60 nm, the strengthening mechanism is well described by the Hall-Petch model, while for 27 < L < 60 nm the refined CLS model comes into picture. A decrease in strength is found for L < 27 nm, which could not be simply explained by considering only misfit and Koehler stresses. For L ≤ 27 nm, plastic strain measured across compressed NMMs revealed a change in the plastic behaviour of α-Zr, which experienced a hard-to-soft transition. At these length scales, the combination of two structural factors were found to affect the strength. These relate to the formation of weaker interfaces which extend the effective distance between strong barriers against dislocation transmission, thus producing a softening effect. 1The second effect relates to the crystallographic orientation change exhibited by α-Zr for L < 27 nm with a consequent change of the dominant slip system. The actual strength at these smaller length scales was effectively quantified by taking these structural aspects into account in the interface barrier strength model.

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Structure and mechanical properties of Cu-X (X = Nb,Cr,Ni) nanolayered composites

Cited by 374 publications

References 16 publications

Thermally enhanced mechanical properties of arc evaporated Ti0.34Al0.66N/TiN multilayer coatings

Thermally enhanced mechanical properties of arc evaporated Ti0.34Al0.66N/TiN multilayer coatings

Coherent Interfaces Increase Strain-Hardening Behavior in Tri-Component Nano-Scale Metallic Multilayer Thin Films

Combined size and texture-dependent deformation and strengthening mechanisms in Zr/Nb nano-multilayers

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