Numerical modeling for the mechanism of shoulder and pin features affecting thermal and material flow behavior in friction stir welding

Hua, Jianmin; Deng, Yun; Xu, Hong Yong; Yin, Xiaoxing; Zhang, Teng; Wang, Wen Quan; Dong, Hong Gang; Wang, Tian Yu; Wu, Jin Peng

doi:10.1016/j.jmrt.2022.09.070

Cited by 22 publications

(3 citation statements)

References 28 publications

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“…CFD provides insights into the fluid flow and heat transfer phenomena that occur during welding [245][246][247]. The primary concept behind this form of analysis involves replacing a continuous problem domain with a discrete domain.…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Effect of Process Parameters on Friction Stir Welded Joints between Dissimilar Aluminum Alloys: A Review

Bella

Favaloro

Borsellino

2023

Metals

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Friction Stir Welding is a suitable solid-state joining technology to connect dissimilar materials. To produce an effective joint, a phase of optimization is required which leads to the definition of process parameters such as pin geometry, tool rotational speed, rotation direction, welding speed, thickness of the sheets or tool tilt angle. The aim of this review is to present a complete and detailed frame of the main process parameters and their effect on the final performance of a friction stir welded joint in terms of mechanical properties and microstructure. Attention was focused in particular on the connection between different aluminum alloys. Moreover, the experimental results were correlated to the development and the applications of tools which can be effectively used in the design of the manufacturing process such as finite element analyses, artificial neural networks, and statistical studies. The review also aims to be a point of reference to identify the best combinations of process parameters based on the dissimilar aluminum to be joined.

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Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Effect of Process Parameters on Friction Stir Welded Joints between Dissimilar Aluminum Alloys: A Review

Bella

Favaloro

Borsellino

2023

Metals

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“…After steady processing, the peak temperature of the SZ is above 440 • C, and the temperature of the TMAZ is about 350 • C in this work. The solid solution of α-Mg and AlLi are within this temperature field [41,42]. Wei et al [43] investigated the effect of α-Mg precipitation on the strength of a Mg-Li-Zn-Y alloy, showing that the bulk α-phase disappeared with a short solid solution treatment at 450 • C. In addition, a large linear velocity at the edge of the shoulder and stir pin body has an obvious mechanical crushing effect [44], and it further induces recrystallization to occur in β-Li.…”

Section: Microstructuresmentioning

confidence: 93%

“…After steady processing, the peak temperature of the SZ is above 440 °C, and the temperature of the TMAZ is about 350 °C in this work. The solid solution of α-Mg and AlLi are within this temperature field [41,42]. Wei et al [43] investigated the effect of α-Mg precipitation on the strength of a Mg-Li-Zn-Y alloy, showing that the bulk α-phase disappeared with a short solid solution treatment at 450 °C.…”

Section: Microstructuresmentioning

confidence: 99%

Effects of Friction Stir Processing on the Microstructure and Mechanical Properties of an Ultralight Mg-Li Alloy

Song,

Wu,

et al. 2024

Crystals

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Magnesium–lithium alloys are arguably the lightest metal structural materials but have low strength. In order to increase strength, friction stir processing (FSP) is applied to a hot-rolled Mg-10Li-3Al-3Zn (LA103Z) sheet to study the effects on the microstructure and mechanical properties. In this study, the strengthening mechanisms of various FSP regions of an Mg-Li alloy were clarified by a combination of numerical simulation and experimental method. Based on ANSYS APDL, a finite element model with a moving heat source is established. Rotational speeds of 800, 1000, and 1200 rpm and traverse speeds of 100, 110, and 120 mm/min were used in this research. The simulation results confirm that the influence of the rotation speed on the alloy temperature field is greater than that of the travel speed. The temperature of the processing area increases with an increase in rotation speed and decreases with an increase in travel speed. Then, hot-rolled LA103Z alloy plates are processed by FSP. The correspondence between the numerical simulation and experiment was verified by infrared thermography. The results indicate that FSP decreases the grain size significantly for the dynamic recrystallization and dramatic mechanical crushing of the stirring pin. The α-Mg and AlLi are solid soluted in the β-Li matrix. The tensile strength of the processing zone is 260.67 MPa (1000 rpm, 110 mm/min) versus the 170.47 MPa of the base metal. The SZ has the highest microhardness of 77.8 HV (800 rpm, 120 mm/min) and decreases gradually to the BM. The severe deformation, recrystallization, and solid solution of the α-Mg are important factors contributing to the improved mechanical properties.

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Influence of tool pin geometry on the thermal processes and plastic material flow in ultrasonic vibration–enhanced friction stir welding

Wang

Xiao

Shi

et al. 2022

Int J Adv Manuf Technol

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Numerical modeling for the mechanism of shoulder and pin features affecting thermal and material flow behavior in friction stir welding

Cited by 22 publications

References 28 publications

Effect of Process Parameters on Friction Stir Welded Joints between Dissimilar Aluminum Alloys: A Review

Effect of Process Parameters on Friction Stir Welded Joints between Dissimilar Aluminum Alloys: A Review

Effects of Friction Stir Processing on the Microstructure and Mechanical Properties of an Ultralight Mg-Li Alloy

Influence of tool pin geometry on the thermal processes and plastic material flow in ultrasonic vibration–enhanced friction stir welding

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