Optimization of Welding Parameters for Small-Scale Resistance Spot Welding of Zirconium Alloys
| Parent link: | Materials Science Forum: Scientific Journal Vol. 970 : Modern Problems in Materials Processing, Manufacturing, Testing and Quality Assurance II.— 2019.— [P. 145-152] |
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| Autores Corporativos: | , |
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| Sumario: | Title screen This paper presents the results of optimization of parameters for resistance spot welding of parts made of E110 zirconium alloy with a thickness of 0.25+0.25 mm. Its purpose was to determine the influence of welding current profiles on nugget metal structure and mechanical properties of welds. The highest tensile strength comparable with base metal (380...440 MPa) was observed when the ratio of integral heat input to current pulse duration was about two. Formation of martensitic structure and coarsening of nugget metal was observed with larger ratios. A proper fusion zone was not formed with lower ratios. Annealing of welded joints at a pressure of ~ 10{-4} Pa and a temperature of 580 °C for one hour was necessary to reduce residual stresses and transformation of metastable martensitic phase to a more stable state. This reduced microhardness of nugget metal by 30...35% and increased tensile strength of welds. It was also possible to increase tensile strength and reduce dispersion of its values by increasing duration of current down slope after formation of a nugget. An increase in duration from 1 to 14 ms caused rise in tensile strength by ~ 18% and dispersion of its values by ~ 3%. Режим доступа: по договору с организацией-держателем ресурса |
| Lenguaje: | inglés |
| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | https://doi.org/10.4028/www.scientific.net/MSF.970.145 |
| Formato: | Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660928 |
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| 200 | 1 | |a Optimization of Welding Parameters for Small-Scale Resistance Spot Welding of Zirconium Alloys |f T. G. Nesterenko, E. S. Barbin, A. N. Koleda | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 330 | |a This paper presents the results of optimization of parameters for resistance spot welding of parts made of E110 zirconium alloy with a thickness of 0.25+0.25 mm. Its purpose was to determine the influence of welding current profiles on nugget metal structure and mechanical properties of welds. The highest tensile strength comparable with base metal (380...440 MPa) was observed when the ratio of integral heat input to current pulse duration was about two. Formation of martensitic structure and coarsening of nugget metal was observed with larger ratios. A proper fusion zone was not formed with lower ratios. Annealing of welded joints at a pressure of ~ 10{-4} Pa and a temperature of 580 °C for one hour was necessary to reduce residual stresses and transformation of metastable martensitic phase to a more stable state. This reduced microhardness of nugget metal by 30...35% and increased tensile strength of welds. It was also possible to increase tensile strength and reduce dispersion of its values by increasing duration of current down slope after formation of a nugget. An increase in duration from 1 to 14 ms caused rise in tensile strength by ~ 18% and dispersion of its values by ~ 3%. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 0 | |0 (RuTPU)RU\TPU\network\24092 |t Materials Science Forum |o Scientific Journal | |
| 463 | 0 | |0 (RuTPU)RU\TPU\network\30892 |t Vol. 970 : Modern Problems in Materials Processing, Manufacturing, Testing and Quality Assurance II |o September 2019, Tomsk, Russia |f National Research Tomsk Polytechnic University (TPU) ; ed. A. P. Surzhikov |v [P. 145-152] |d 2019 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Optimization | |
| 610 | 1 | |a Small-Scale Resistance Spot Welding | |
| 610 | 1 | |a Welding Parameters | |
| 610 | 1 | |a Zirconium Alloys | |
| 610 | 1 | |a оптимизация | |
| 610 | 1 | |a точечная сварка | |
| 610 | 1 | |a параметры | |
| 610 | 1 | |a циркониевые сплавы | |
| 700 | 1 | |a Slobodyan |b M. S. |c Specialist in the field of management, specialist in the field of welding production |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1978- |g Mikhail Stepanovich |3 (RuTPU)RU\TPU\pers\43098 | |
| 701 | 1 | |a Kiselev |b A. S. |c Specialist in the field of welding production |c Head of the department of Tomsk Polytechnic University, Candidate of technical sciences |f 1955- |g Aleksey Sergeevich |y Tomsk |3 (RuTPU)RU\TPU\pers\34654 |9 18016 | |
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| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Отделение материаловедения |3 (RuTPU)RU\TPU\col\23508 |
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