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Small scale testing approach to reveal specific features of slip behavior in BCC metals
- Source :
- Acta Materialia. 174:142-152
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Plastic behavior of Fe–3%Si was investigated with a novel methodology at microscopic scale and higher stress resolution beyond the existing macroscopic test methods. Activation of single slip system in micropillars under compression provides perfect shear and excludes the lattice rotation. Crystallographic orientation dependency of critical resolved shear stress (CRSS) was observed. Different scenarios regarding activated slip planes are discussed to explain this orientation dependency. Schmid's law approach, which only considers the stress component parallel to the Burgers vector, fails to explain this orientation dependency of CRSS. It is shown that the non-glide stress components should be taken into account in order to precisely define the plasticity in BCC metals.
- Subjects :
- 010302 applied physics
Materials science
Polymers and Plastics
Metals and Alloys
02 engineering and technology
Mechanics
Slip (materials science)
Plasticity
021001 nanoscience & nanotechnology
01 natural sciences
Microscopic scale
Electronic, Optical and Magnetic Materials
Shear (geology)
Lattice (order)
Critical resolved shear stress
0103 physical sciences
Ceramics and Composites
0210 nano-technology
Single slip
Burgers vector
Subjects
Details
- ISSN :
- 13596454
- Volume :
- 174
- Database :
- OpenAIRE
- Journal :
- Acta Materialia
- Accession number :
- edsair.doi...........f57eada9ba7d350e43bb640d9ec27af0