Abstract
Zirconium alloys, such as Zr-1Nb are widely used as cladding materials for nuclear fuel elements of light water reactors. Hydrogen embrittlement problem causes degradation of these parts of nuclear reactors. It is known, that hydrogen uptake causes changes in microstructure and defect structure of metals. The aim of this work is study of Zr-1Nb alloys' defect structure after hydrogen saturation up to the concentration of 600 ppm. Saturation of hydrogen was carried out from the gas phase under high temperature and pressure. This study reveals the increase of average positron lifetime with the increase of hydrogen concentration. Value of the average positron lifetime achieves plateau when the concentration of hydrogen is about 600 ppm. Also the following effects were detected in the material after hydrogen uptake up to different concentrations: crystal lattice expansion, dislocations and vacancy-like defects formation, as well as the defect-hydrogen complexes formation.
| Original language | English |
|---|---|
| Title of host publication | Positron Annihilation - ICPA-17 |
| Publisher | Trans Tech Publications Ltd |
| Pages | 138-141 |
| Number of pages | 4 |
| Volume | 373 DDF |
| ISBN (Print) | 9783038356059 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | 17th International Conference onPositron Annihilation, ICPA-17 - Wuhan, China Duration: 20 Sep 2016 → 25 Sep 2016 |
Publication series
| Name | Defect and Diffusion Forum |
|---|---|
| Volume | 373 DDF |
| ISSN (Print) | 1012-0386 |
Conference
| Conference | 17th International Conference onPositron Annihilation, ICPA-17 |
|---|---|
| Country | China |
| City | Wuhan |
| Period | 20.9.16 → 25.9.16 |
Fingerprint
Keywords
- Defects
- Hydrogen embrittlement
- Positron lifetime
- Zirconium-hydrogen
ASJC Scopus subject areas
- Radiation
- Materials Science(all)
- Condensed Matter Physics
Cite this
Positron spectroscopy of defects in hydrogen-saturated Zirconium. / Bordulev, Yuriy S.; Lee, K.; Laptev, S. Roman; Kudiiarov, N. Viktor; Lider, M. Andrey.
Positron Annihilation - ICPA-17. Vol. 373 DDF Trans Tech Publications Ltd, 2016. p. 138-141 (Defect and Diffusion Forum; Vol. 373 DDF).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Positron spectroscopy of defects in hydrogen-saturated Zirconium
AU - Bordulev, Yuriy S.
AU - Lee, K.
AU - Laptev, S. Roman
AU - Kudiiarov, N. Viktor
AU - Lider, M. Andrey
PY - 2016
Y1 - 2016
N2 - Zirconium alloys, such as Zr-1Nb are widely used as cladding materials for nuclear fuel elements of light water reactors. Hydrogen embrittlement problem causes degradation of these parts of nuclear reactors. It is known, that hydrogen uptake causes changes in microstructure and defect structure of metals. The aim of this work is study of Zr-1Nb alloys' defect structure after hydrogen saturation up to the concentration of 600 ppm. Saturation of hydrogen was carried out from the gas phase under high temperature and pressure. This study reveals the increase of average positron lifetime with the increase of hydrogen concentration. Value of the average positron lifetime achieves plateau when the concentration of hydrogen is about 600 ppm. Also the following effects were detected in the material after hydrogen uptake up to different concentrations: crystal lattice expansion, dislocations and vacancy-like defects formation, as well as the defect-hydrogen complexes formation.
AB - Zirconium alloys, such as Zr-1Nb are widely used as cladding materials for nuclear fuel elements of light water reactors. Hydrogen embrittlement problem causes degradation of these parts of nuclear reactors. It is known, that hydrogen uptake causes changes in microstructure and defect structure of metals. The aim of this work is study of Zr-1Nb alloys' defect structure after hydrogen saturation up to the concentration of 600 ppm. Saturation of hydrogen was carried out from the gas phase under high temperature and pressure. This study reveals the increase of average positron lifetime with the increase of hydrogen concentration. Value of the average positron lifetime achieves plateau when the concentration of hydrogen is about 600 ppm. Also the following effects were detected in the material after hydrogen uptake up to different concentrations: crystal lattice expansion, dislocations and vacancy-like defects formation, as well as the defect-hydrogen complexes formation.
KW - Defects
KW - Hydrogen embrittlement
KW - Positron lifetime
KW - Zirconium-hydrogen
UR - http://www.scopus.com/inward/record.url?scp=85016595604&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016595604&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/DDF.373.138
DO - 10.4028/www.scientific.net/DDF.373.138
M3 - Conference contribution
SN - 9783038356059
VL - 373 DDF
T3 - Defect and Diffusion Forum
SP - 138
EP - 141
BT - Positron Annihilation - ICPA-17
PB - Trans Tech Publications Ltd
ER -