An investigation on tensile shear strength of CMT spot weld-brazing of 5052 aluminium alloy and SS 400 galvanized steel

• Autorzy: Chuvaree S. , Janmanee P. , Jamkamon K. , Mookam N.

Identyfikatory

DOI

10.5604/01.3001.0054.7420

• Języki publikacji: EN

Abstrakty

EN

Purpose: The main purpose of the research is to investigate the effects of spot weld-brazing variables, such as cold metal transfer (CMT) modes and current, on the tensile shear strength of 5052 aluminium alloy for dissimilar joining to SS400 galvanized steel. Design/methodology/approach: The method employed in the study was a 3k full factorial design with three replications. Analysis of variance (ANOVA) techniques were employed to identify the variables that influenced the responses of interest. The response optimiser method displayed which factors affected the variables and their impact on strength. In addition, the response optimiser method was employed to find which factors produced the best value for the response variable. A mathematical model was developed to predict the strength of the joints. An optical microscope (OM) and scanning electron microscope (SEM) were also employed to confirm the microstructure. Energy dispersive spectroscopy (EDS) was used to determine the chemical composition of the microstructure. Findings: The strength of the weld-brazing joints was affected by the modes and currents used in the joining process. The weld-brazing mode selection was found to have an impact on strength. The synergic mode was shown to have a strength greater than the CMT pulse and pulse synergic modes. The excess or little weld-brazing current was shown to be unsuitable for the joint. The maximum tensile shear strength value was obtained in the synergic mode with a current of 110 A. The resulting prediction model was evaluated with the newly collected experimental data, and the average per cent error was estimated to be 2.07%. In addition, the reaction layer at the aluminium alloy and steel interface was composed of a Fe(Al, Si)3 phase. The optimal conditions for the spot weld-brazing activities resulted in a larger fracture area, a small contact angle, and excellent weld bead geometry. Research limitations/implications: The prediction accuracy of the model appeared satisfactory. However, the altered chemical composition of the filler metals and substrate materials could impact the findings. It is recommended that the electrical signal waveform be studied during spot weld-brazing, as well as the characteristics of other material joints with various other parameters. Practical implications: The weld-brazing mode and current had no significant effect on the type of interface layer of the joints.Originality/value: It is highly possible that the CMT spot weld-brazing technique could be applied to join other dissimilar materials in order to reduce the joining time, but the filler metal chosen must be appropriate.

Słowa kluczowe

EN

weld brazing; dissimilar joining; optimization; interface layer

PL

spawanie lutowanie; łączenie materiałów różnego rodzaju; optymalizacja; warstwa styku

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2024
• Tom: Vol. 127, nr 2
• Strony: 49--59
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Chuvaree S.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand

autor

Janmanee P.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand

autor

Jamkamon K.

• Department of Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand

autor

Mookam N.

• Department of Industrial and Production Engineering, Faculty of Engineering, Rajamangala University of Technology Rattanakosin Wang Klai Kangwon Campus, Huahin, Prachuapkhirikhan 77110, Thailand

• https://orcid.org/0000-0002-5849-4416

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