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In situ nanoindentation study of plastic co-deformation in Al-TiN nanocomposites.

ABSTRACT: We performed in situ indentation in a transmission electron microscope on Al-TiN multilayers with individual layer thicknesses of 50 nm, 5 nm and 2.7 nm to explore the effect of length scales on the plastic co-deformability of a metal and a ceramic. At 50 nm, plasticity was confined to the Al layers with easy initiation of cracks in the TiN layers. At 5 nm and below, cracking in TiN was suppressed and post mortem measurements indicated a reduction in layer thickness in both layers. The results demonstrate the profound size effect in enhancing plastic co-deformability in nanoscale metal-ceramic multilayers.

SUBMITTER: Li N

PROVIDER: S-EPMC4198947 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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In situ nanoindentation study of plastic co-deformation in Al-TiN nanocomposites.

Li N N Wang H H Misra A A Wang J J

Scientific reports 20141016

We performed in situ indentation in a transmission electron microscope on Al-TiN multilayers with individual layer thicknesses of 50 nm, 5 nm and 2.7 nm to explore the effect of length scales on the plastic co-deformability of a metal and a ceramic. At 50 nm, plasticity was confined to the Al layers with easy initiation of cracks in the TiN layers. At 5 nm and below, cracking in TiN was suppressed and post mortem measurements indicated a reduction in layer thickness in both layers. The results d ...[more]

PMID: 25319014

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