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 |
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Keywords
- Fracture
- Localization of deformation
- Specific energy of fracture
- Titanium alloys
- Ultrafine grain structure
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Determination of fracture toughness for small-sized specimens with ultrafine grain structure. / Deryugin, Ye Ye; Panin, V. E.; Suvorov, B. I.
AIP Conference Proceedings. Vol. 1623 American Institute of Physics Inc., 2014. p. 111-114.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Determination of fracture toughness for small-sized specimens with ultrafine grain structure
AU - Deryugin, Ye Ye
AU - Panin, V. E.
AU - Suvorov, B. I.
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Fracture
KW - Localization of deformation
KW - Specific energy of fracture
KW - Titanium alloys
KW - Ultrafine grain structure
UR - http://www.scopus.com/inward/record.url?scp=84915758336&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84915758336&partnerID=8YFLogxK
U2 - 10.1063/1.4898895
DO - 10.1063/1.4898895
M3 - Conference contribution
AN - SCOPUS:84915758336
SN - 9780735412606
VL - 1623
SP - 111
EP - 114
BT - AIP Conference Proceedings
PB - American Institute of Physics Inc.
ER -