TY - GEN
T1 - Computational Study of Metal Flow Behavior of AA 6061 in Friction Stir Processing with Twin Tools
AU - Tiwari, Vineet Kumar
AU - Paul, Akshoy Ranjan
AU - Jain, Anuj
AU - Chattopadhyaya, Somnath
AU - Shankar, Sachindra
AU - Vilaca, Pedro
PY - 2021
Y1 - 2021
N2 - In order to tackle the growing demand of low weight to strength ratio materials in shipbuilding, trains, and aerospace applications, high strength aluminum alloys have shown good promise. Fabrication of parts with aluminum alloys has always been a challenge as conventional welding processes, which are basically fusion welding techniques, are not able to provide enough joint strength against impact. Friction stir welding (FSW) that generates heat from friction between a rotating tool and work-pieces to be welded, has shown promise to provide better strength. One of the important parameters that dictate the strength of joints produced by friction stir welding is the amount of mixing. Research has been carried out to improve mixing by modifying the tool geometry by several scholars. The present work is focused on improving mixing using twin tools instead of a conventional single tool. Numerical analysis is carried out using a finite volume method based computational fluid dynamics (CFD) solver. The result reveals that twin tools in linear alignment in the direction of welding with the rear/follower tool rotating in a direction counter to the front one can improve mixing as well as even distribution of material, leading to stronger joining.
AB - In order to tackle the growing demand of low weight to strength ratio materials in shipbuilding, trains, and aerospace applications, high strength aluminum alloys have shown good promise. Fabrication of parts with aluminum alloys has always been a challenge as conventional welding processes, which are basically fusion welding techniques, are not able to provide enough joint strength against impact. Friction stir welding (FSW) that generates heat from friction between a rotating tool and work-pieces to be welded, has shown promise to provide better strength. One of the important parameters that dictate the strength of joints produced by friction stir welding is the amount of mixing. Research has been carried out to improve mixing by modifying the tool geometry by several scholars. The present work is focused on improving mixing using twin tools instead of a conventional single tool. Numerical analysis is carried out using a finite volume method based computational fluid dynamics (CFD) solver. The result reveals that twin tools in linear alignment in the direction of welding with the rear/follower tool rotating in a direction counter to the front one can improve mixing as well as even distribution of material, leading to stronger joining.
KW - Computational fluid dynamics (CFD)
KW - Friction stir welding (FSW)
KW - Mixing
KW - Twin tool
UR - http://www.scopus.com/inward/record.url?scp=85104886402&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-71956-2_32
DO - 10.1007/978-3-030-71956-2_32
M3 - Conference article in proceedings
AN - SCOPUS:85104886402
SN - 9783030719555
T3 - Lecture Notes in Mechanical Engineering
SP - 386
EP - 391
BT - Advances in Manufacturing Engineering and Materials II - Proceedings of the International Conference on Manufacturing Engineering and Materials, ICMEM 2020
A2 - Hloch, Sergej
A2 - Klichová, Dagmar
A2 - Pude, Frank
A2 - Krolczyk, Grzegorz M.
A2 - Chattopadhyaya, Somnath
PB - Springer
T2 - International Conference on Manufacturing Engineering and Materials
Y2 - 21 June 2021 through 25 June 2021
ER -