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Fracture behavior of high-entropy alloy coating by in-situ TEM tensile testing
- Source :
- Journal of Alloys and Compounds. 729:897-902
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The fracture behavior of high-profile high-entropy alloy coating was characterized by in-situ TEM tensile testing. The samples for in-situ TEM tensile testing were obtained by FIB technology. The results show that irrelevant to phase constitution, the Young's module, fracture strength and ultimate elongation are measured as ∼107 GPa, ∼2.70 GPa and ∼2.6%, respectively. Transcrystalline fracture and cleavage fracture with the cleavage plane of {112} are observed evidentially and the evolution of the dislocation motion in the material could be directly connected with the fracture behavior from the recorded movies obtained by a Gatan CCD camera. The engineering stress-strain curve is nearly linearity, however, a slight deviation away from linearity could be noted in the end of engineering stress-strain curve, which is attributed that the extra elastic deformation results in part of continued deformation.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Stress–strain curve
Metals and Alloys
Cleavage (crystal)
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Flexural strength
Mechanics of Materials
0103 physical sciences
Materials Chemistry
Fracture (geology)
Forensic engineering
Deformation (engineering)
Composite material
Elongation
Dislocation
0210 nano-technology
Tensile testing
Subjects
Details
- ISSN :
- 09258388
- Volume :
- 729
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........6e2dbe7eea17acfa7dc0123c5a8979fc