Effects of Electrode Degradation on Properties of Small-Scale Resistance Spot Welded Joints of E110 Alloy; Materials Science Forum; Vol. 970 : Modern Problems in Materials Processing, Manufacturing, Testing and Quality Assurance II

Effects of Electrode Degradation on Properties of Small-Scale Resistance Spot Welded Joints of E110 Alloy; Materials Science Forum; Vol. 970 : Modern Problems in Materials Processing, Manufacturing, Testing and Quality Assurance II

Podrobná bibliografie
Parent link:Materials Science Forum: Scientific Journal
Vol. 970 : Modern Problems in Materials Processing, Manufacturing, Testing and Quality Assurance II.— 2019.— [P. 227-235]
Hlavní autor: Kiselev A. S. Aleksey Sergeevich
Korporace: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение электронной инженерии, Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Další autoři: Slobodyan M. S. Mikhail Stepanovich
Shrnutí:Title screen
Effect of electrode degradation on stability of nugget formation during small-scale resistance spot welding is presented in this paper. Production of spacer grids for nuclear fuel assemblies made of E110 zirconium alloy cells of 0.25 mm thickness was studied. The following degradation processes took place in the electrodes as they wore. Roughness of the tip surface was gradually reduced to the values of the welded cells. The semispherical tips were severely deformed during the initial period of their operation (1.500...2.000 welds). The deformation dynamics slowed down significantly after that. Microhardness on the tip surface of the electrodes decreased. It was minimal in the central part of the surface layer with a thickness of 50...100 [mu]m and increased towards the periphery. Significant coarsening of the electrode metal microstructure occurred at a depth of ~ 1 mm. Nugget area and its tensile strength decreased as the electrodes wore. An increase in welding current did not reduce deterioration of nugget quality. Measurement and processing of dynamic resistance between electrodes did not make it impossible to predict and control the properties of nuggets for the studied welding modes.
Режим доступа: по договору с организацией-держателем ресурса
Jazyk:angličtina
Vydáno: 2019
Témata:
электронный ресурс
труды учёных ТПУ
Electrode Degradation
Small-Scale Resistance Spot Welding
Weld Properties
Zirconium Alloys
деградация
электроды
точечная сварка
свойства
циркониевые сплавы
On-line přístup:https://doi.org/10.4028/www.scientific.net/MSF.970.227
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660934

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