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Indentation size and loading strain rate dependent creep deformation of nanocrystalline Mo
- Source :
- Thin Solid Films. 653:365-370
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The creep behavior of nanocrystalline body-centered cubic Mo thin films was evaluated using nanoindentation testing. The creep rate and the corresponding strain rate sensitivity (m) were found to be strongly dependent upon indentation size and loading strain rate (LSR). Other than the mechanism of diffusion along indenter tip-sample interface previously proposed for face-centered cubic metals and metallic glasses, alternative mechanisms involving surface effect enhanced screw dislocation activities, inverse indentation size effect of hardness and LSR dependent microstructural and stress states, were proposed to interpret the observed dependence of penetration depth and LSR of m.
- Subjects :
- 010302 applied physics
Materials science
Metals and Alloys
02 engineering and technology
Surfaces and Interfaces
Strain rate
Nanoindentation
021001 nanoscience & nanotechnology
01 natural sciences
Nanocrystalline material
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Stress (mechanics)
Creep
Indentation
0103 physical sciences
Materials Chemistry
Dislocation
Composite material
0210 nano-technology
Penetration depth
Subjects
Details
- ISSN :
- 00406090
- Volume :
- 653
- Database :
- OpenAIRE
- Journal :
- Thin Solid Films
- Accession number :
- edsair.doi...........a7e50c18f0065c53c5c8007d4ae4939c