Выдержка
Laser welding is usually a more effective method than electron-beam one since a vacuum chamber is not required. It is important for joining Zr–1%Nb (E110) alloy in a manufacturing process of nuclear fuel rods. In the present work, effect of energy parameters of pulsed laser welding on properties of butt joints of sheets with a thickness of 0.5 mm is investigated. The most efficient combination has been found (8–11 J pulse energy, 10–14 ms pulse duration, 780–810 W peak pulse power, 3 Hz pulse frequency, 1.12 mm/s welding speed). The results show that ultimate strength under static loading can not be used as a quality criterion for zirconium alloys welds. Increased shielding gas flow rate does not allow to protect weld metal totally and contributes to defect formation without using special nozzles. Several types of imperfections of the welds have been found, but the major problem is branching microcracks on the surface of the welds. It is difficult to identify the cause of their appearance without additional research on improving the welding zone protection (gas composition and flow rate as well as nozzle configuration) and studying the hydrogen content in the welds.
| Язык оригинала | Английский |
|---|---|
| Страницы (с-по) | 776-783 |
| Число страниц | 8 |
| Журнал | Nuclear Engineering and Technology |
| Том | 51 |
| Номер выпуска | 3 |
| DOI | |
| Состояние | Опубликовано - 1 июн 2019 |
Отпечаток
ASJC Scopus subject areas
- Nuclear Energy and Engineering
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Pulsed laser welding of Zr–1%Nb alloy. / Elkin, Maxim A.; Kiselev, Alexey S.; Slobodyan, Mikhail S.
В: Nuclear Engineering and Technology, Том 51, № 3, 01.06.2019, стр. 776-783.Результат исследований: Материалы для журнала › Статья
}
TY - JOUR
T1 - Pulsed laser welding of Zr–1%Nb alloy
AU - Elkin, Maxim A.
AU - Kiselev, Alexey S.
AU - Slobodyan, Mikhail S.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Laser welding is usually a more effective method than electron-beam one since a vacuum chamber is not required. It is important for joining Zr–1%Nb (E110) alloy in a manufacturing process of nuclear fuel rods. In the present work, effect of energy parameters of pulsed laser welding on properties of butt joints of sheets with a thickness of 0.5 mm is investigated. The most efficient combination has been found (8–11 J pulse energy, 10–14 ms pulse duration, 780–810 W peak pulse power, 3 Hz pulse frequency, 1.12 mm/s welding speed). The results show that ultimate strength under static loading can not be used as a quality criterion for zirconium alloys welds. Increased shielding gas flow rate does not allow to protect weld metal totally and contributes to defect formation without using special nozzles. Several types of imperfections of the welds have been found, but the major problem is branching microcracks on the surface of the welds. It is difficult to identify the cause of their appearance without additional research on improving the welding zone protection (gas composition and flow rate as well as nozzle configuration) and studying the hydrogen content in the welds.
AB - Laser welding is usually a more effective method than electron-beam one since a vacuum chamber is not required. It is important for joining Zr–1%Nb (E110) alloy in a manufacturing process of nuclear fuel rods. In the present work, effect of energy parameters of pulsed laser welding on properties of butt joints of sheets with a thickness of 0.5 mm is investigated. The most efficient combination has been found (8–11 J pulse energy, 10–14 ms pulse duration, 780–810 W peak pulse power, 3 Hz pulse frequency, 1.12 mm/s welding speed). The results show that ultimate strength under static loading can not be used as a quality criterion for zirconium alloys welds. Increased shielding gas flow rate does not allow to protect weld metal totally and contributes to defect formation without using special nozzles. Several types of imperfections of the welds have been found, but the major problem is branching microcracks on the surface of the welds. It is difficult to identify the cause of their appearance without additional research on improving the welding zone protection (gas composition and flow rate as well as nozzle configuration) and studying the hydrogen content in the welds.
KW - Butt welds
KW - Defects
KW - Mechanical properties
KW - Microstructure
KW - Pulsed laser welding
KW - Zirconium alloys
UR - http://www.scopus.com/inward/record.url?scp=85059061272&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059061272&partnerID=8YFLogxK
U2 - 10.1016/j.net.2018.12.016
DO - 10.1016/j.net.2018.12.016
M3 - Article
AN - SCOPUS:85059061272
VL - 51
SP - 776
EP - 783
JO - Nuclear Engineering and Technology
JF - Nuclear Engineering and Technology
SN - 1738-5733
IS - 3
ER -