Weldability of a zirconium alloy comparing resistance and pulsed laser methods

Sakamiti, Guilherme Pennachin; Siqueira, Rafael Humberto Mota de; Carvalho, Sheila Medeiros de; Meireles, João Batista; Lima, Milton Sérgio Fernandes de

doi:10.1016/j.nme.2019.100693

Cited by 9 publications

(4 citation statements)

References 13 publications

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“…[17,18] At present, there is limited research available in the open literature regarding the RSW of Zr-alloy triple sheets, mainly focusing on the welding of Zr-alloy tubes, the measurement and stability of contact resistance, and small-scale RSW. [19][20][21][22][23][24][25][26] Compared with the two-layer plate, there is an additional contact interface in the three-layer plate, which changes the proportion of heat DOI: 10.1002/adem.202400380…”

Section: Introductionmentioning

confidence: 99%

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

Li,

Yang,

et al. 2024

Adv Eng Mater

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Triple sheets of R60702 zirconium (Zr) alloy were joined together using the resistance spot welding (RSW) process in this study. The nugget formation mechanism and microstructure of the weld joint in three equal‐thickness sheets of R60702 Zr alloy were studied. The results revealed that the initial nugget formed at the top of the intermediate sheet, and subsequently expanded both radially and axially until a complete nugget was formed. The fusion zone (FZ) exhibited a martensitic microstructure, while the heat affected zone (HAZ) consisted of two regions: coarse grain heat‐affected zone (CGHAZ) and fine grain heat‐affected zone (FGHAZ). The hardness in the FZ was higher than that of the HAZ and the base metal (BM). Furthermore, the tensile shear force and fracture mode of the weld nuggets were also studied. The weld joints exhibited a maximum tensile‐shear load of 5.7 kN under the following welding parameters: welding current of 14 kA, welding time of 150 ms, and welding force of 3.6 kN. Three failure modes were identified interface fracture (IF), partial button fracture (PBF), and button fracture (BF).This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

Li,

Yang,

et al. 2024

Adv Eng Mater

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“…The use of laser welding as a joining process is still a relatively recent activity (Katayama, Kawahito, and Mizutani 2012) but already finds use in a wide range of applications, any of those in the automotive industry and the electronics sector. In these applications, laser welding is extensively used to create highly complex products, including those which rely on welding of dissimilar metals, metals with very low weldability (Sakamiti et al 2019) and metals to polymers (Katayama and Kawahito 2008;Lambiase, Genna, and Kant 2018). Furthermore, some advanced applications use laser-welding to successfully achieve the task of joining ceramic materials (Hirsch et al 1998;Song et al 2019), doing so by exploring the extremely concentrated energy input that this process provides.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in laser welding for joining polymeric components

Marques

Silva

Carbas

et al. 2022

EML

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Laser welding of polymers is a very popular industrial joining process, creating joints with good mechanical performance. However, the implementation of optimized laser welding processes is still quite limited since most industrial applications adopt an empirical approach to adjust the process parameters. The current work provides a summary of new findings on the subject of laser joining of polymers, describing the key operation modes of this joining method, its process parameters and how they affect the joint characteristics. The response of polymers to temperatures generated during laser welding is also discussed, as well as the effect of additives on the weldability of polymers.

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“…Therefore, the special attention of ATF development should be devoted to estimate oxidation behavior of Zr-based alloy welds especially in the loss of coolant accident conditions (LOCA). Oxidation tests of EBW, LBW, TIG and RUW welds of Zr-based alloys were studied in several works [12][13][14][15][16][17]. Vandegrift et al concluded the most protective behavior of EBW welds of Zr-1Nb alloy in comparison with TIG welds and/or made from Zircaloys (Zry-3 and Zry-4) at HT isothermal and transient conditions in both dry and humid air [12].…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Oxidation of Cr-Coated Resistance Upset Welds Made from E110 Alloy

2021

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The resistance upset welds (RUW) made from E110 alloy without and with Cr coatings were oxidized in air atmosphere at 1100 °C for 2, 10 and 30 min. The cross-section microstructure, elemental composition and hardness were studied before and after oxidation using optical and scanning electron microscopy, and indentations in welding region. The RUW welding does not noticeably change oxidation kinetics of E110 alloy. The most crucial effect has surface non-regularities formed after welding, which prevent uniform coating deposition on full surface of welded cladding tube and end plug. Cr coating deposition can strongly reduce oxidation of welded E110 alloy, while additional post-processing treatment should be applied to improve surface morphology after RUW welding. Several suggestions favorable to development of ATF Zr-based claddings using Cr coating deposition on welded nuclear rods were discussed.

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Weldability of a zirconium alloy comparing resistance and pulsed laser methods

Cited by 9 publications

References 13 publications

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

Recent advances in laser welding for joining polymeric components

High-Temperature Oxidation of Cr-Coated Resistance Upset Welds Made from E110 Alloy

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