Development of FSW Simulation Model‐Effect of Tool Shape on Plastic Flow

Miyake, Yurika; Miyasaka, Fumikazu; Matsuzawa, Shuhei; Murao, Shunta; Mitsufuji, Kenta; Ogawa, Shinnosuke

doi:10.1002/9781119093343.ch30

Cited by 1 publication

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with fusion welding, friction stir welding has the advantages of solid-state connection, lower production cost, and excellent joint performance in aluminum alloy welding [6,7,8]. If the welding parameters are not properly controlled, it will easily lead to changes in physical processes such as material heat generation, plastic flow state and even lead to welding defects [9,10].…”

Section: Introductionmentioning

confidence: 99%

Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

et al. 2019

View full text Add to dashboard Cite

Aiming at the problems that the temperature in the welding area of friction stir welding (FSW) is difficult to measure and the joints are prone to defects. Hence, it is particularly important to study the material flow in the welding area and improve the welding quality. The temperature of the tool shoulder and the tool pin was monitored by the wireless temperature measuring system. The finite element model of friction stir welding was established and the welding conditions were numerically simulated. The flow law of material of the friction stir welding process was studied by numerical simulation. The material flow model was established by combining the microstructure analysis results, and the forming mechanism of the defects was analyzed. The results show that the temperature in the welding zone is the highest at 1300 rpm, and the temperature at the tool shoulder is significantly higher than that at the tool pin in the welding stage. When high-rotation speeds (HRS) are chosen, the material beneath the tool shoulder tends to be extruded into the pin stirred zone (PSZ) after flowing back to the advancing side. This will cause turbulence phenomenon in the advancing side of the joint, which will easily lead to the formation of welding defects. In the future, temperature monitoring methods and the flow model of material can be used to optimize the welding parameters.

show abstract