Abstract
The results of changing the fracture toughness of materials are given for the VT6 titanium alloy. Its coarse grain structure was reduced down to ultrafine structure by forging. The specific energy of fracture γ for the small-sized chevron-notched specimens was found thanks to the new technique. It is shown that severe plastic deformation reduces γ at room temperature. The structure of the surface fracture of the VT6 alloy's ultrafine grain structure can be conceived as local zones of strong deformed material with a high concentration of pores. Such kind of structure cannot be formed only by means of crystallographic shears along close-packed planes. That fact proves the cardinal role of rotational modes of deformation in the origination and formation of a crack at various scale levels.
Original language | English |
---|---|
Title of host publication | AIP Conference Proceedings |
Publisher | American Institute of Physics Inc. |
Pages | 111-114 |
Number of pages | 4 |
Volume | 1623 |
ISBN (Print) | 9780735412606 |
DOIs | |
Publication status | Published - 2014 |
Event | International Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation Duration: 3 Sep 2014 → 5 Sep 2014 |
Other
Other | International Conference on Physical Mesomechanics of Multilevel Systems 2014 |
---|---|
Country | Russian Federation |
City | Tomsk |
Period | 3.9.14 → 5.9.14 |
Keywords
- Fracture
- Localization of deformation
- Specific energy of fracture
- Titanium alloys
- Ultrafine grain structure
ASJC Scopus subject areas
- Physics and Astronomy(all)