Void nucleation behavior of single-crystal high-purity iron specimens subjected to tensile deformation
| Autor: | Masatoshi Aramaki, Shinji Munetoh, Chatcharit Kiattisaksri, Osamu Furukimi, Yuji Takeda, Masaki Tanaka, Satoshi Oue |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Nucleation Fracture mechanics 02 engineering and technology Slip (materials science) 021001 nanoscience & nanotechnology Condensed Matter Physics 020501 mining & metallurgy Crystallography 0205 materials engineering Mechanics of Materials Ultimate tensile strength Void nucleation General Materials Science Composite material 0210 nano-technology Single crystal High voltage electron microscopy |
| Zdroj: | Materials Science and Engineering: A. 701:221-225 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2017.06.084 |
| Popis: | Void nucleation plays an important role for determining local deformation properties of ductile materials. In this study, the void nucleation behavior of single-crystal iron was examined in tensile tests. Two micrometer-size single crystals having a different type of slip extracted from electrodeposited pure iron were used to investigate the fracture mechanics during tensile deformation. Scanning electron microscopy (SEM) and high voltage electron microscopy (HVEM) images verified the existence of only a single slip system in the smaller specimen (cross-sectional area A = 16 µm 2 ) and furthermore, no voids were observed. However, multiple slips and voids were observed in the larger specimen (A = 28 µm 2 ). These findings allowed us to reveal that multiple slips are a necessary criterion for void nucleation in single-crystal iron. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect