Effect of tool geometry in stir zone for hook formation of dissimilar aluminium alloys : a parametric investigation on metallurgical and mechanical characteristics

Navaneethakannan, Nandakumar (author), Sivanandi, Periyasamy (author), Somasekaran, Balakrishnan (author)

A recently developed solid-state joining technique called “friction stir spot welding” (FSSW) is used to combine metal alloys with low weldability. Significant experimental work for this study is concentrated on the FSSW of AA6063 and AA5083. The study involved fixture setup and welding pattern parameters for the sizes of the material, all of which were done on a milling machine. A cylindrical shoulder with a concave (10°) square pin profile was taken into consideration using various process parameters. The tool material is heat-treated high-carbon steel. The Taguchi L9 orthogonal array is employed for the experimental model. The influence of FSSW factors including spindle speed, time, and depth was studied, along with the relationship between tensile strength, hardness at the contact region, and hook development, which would be a nominal metallurgical pledge established in the welding zone among the interacting sheet plate. The hook structure was found in the area of contact, and thermomechanical effects were seen in the spot-welding area. It has been determined that the influencing variables are spindle speed and plunge depth. As a consequence, it was determined that a tool spindle speed of 1200 rpm, a time of 25 seconds, and a plunge depth of 0.10 mm offer better mechanical properties. The microstructural analysis of welded region was carried out using a scanning electron microscope (SEM).

• Language: English
• Keywords: microstructure, hook geometry, stir zone, multiple regression, ANOVA
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.11.2022
• Year: 2022
• Number of pages: Str. 693-701
• Numbering: Vol. 68, no. 11
• PID: 20.500.12556/RUL-143281
• UDC: 621.7
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2022.344
• COBISS.SI-ID: 133435907
• Publication date in RUL: 12.12.2022

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Vpliv geometrije orodja v območju mešanja na oblikovanje kavljev pri varjenju dveh različnih aluminijevih zlitin: parametrična analiza metalurških in mehanskih lastnosti
• Keywords: mikrostruktura, geometrija kavlja, območje mešanja, tehnika Taguchi, multipla regresijska analiza, ANOVA