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Nanoindentation study of cementite size and temperature effects in nanocomposite pearlite: A molecular dynamics simulation
- Source :
- Current Applied Physics. 16:1015-1025
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- We carry out molecular dynamics simulations of nanoindentation to investigate the effect of cementite size and temperature on the deformation behavior of nanocomposite pearlite composed of alternating ferrite and cementite layers. We find that, instead of the coherent transmission, dislocation propagates by forming a widespread plastic deformation in cementite layer. We also show that increasing temperature enhances the distribution of plastic strain in the ferrite layer, which reduces the stress acting on the cementite layer. Hence, thickening cementite layer or increasing temperature reduces the likelihood of dislocation propagation through the cementite layer. Our finding sheds a light on the mechanism of dislocation blocking by cementite layer in the pearlite.
- Subjects :
- 010302 applied physics
Materials science
Bainite
Cementite
General Physics and Astronomy
02 engineering and technology
Nanoindentation
021001 nanoscience & nanotechnology
01 natural sciences
Stress (mechanics)
chemistry.chemical_compound
chemistry
Ferrite (iron)
0103 physical sciences
General Materials Science
Pearlite
Composite material
Deformation (engineering)
Dislocation
0210 nano-technology
Subjects
Details
- ISSN :
- 15671739
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Current Applied Physics
- Accession number :
- edsair.doi...........0c199c79e8aaa478e5f32f947940ed1e
- Full Text :
- https://doi.org/10.1016/j.cap.2016.05.024