Joint Formation and Mechanical Properties of 2060 Aluminum Alloy Refill Friction Stir Spot Welding Joint

• Autorzy: Shang Zhen , Zuo Yingying , Ji Shude , Wang Yue , Chai Peng

Identyfikatory

DOI

10.24425/amm.2021.134771

• Języki publikacji: EN

Abstrakty

EN

Refill friction stir spot welding (RFSSW) was used to weld the 2060 aluminum alloy with 2 mm thickness. Joint formation, defect characteristics and mechanical properties were investigated. Results show that stir zone (SZ) is clarified into dynamic recrystallization zone (DRZ) and heat extruded zone (HEZ) due to different microstructural features. The size of void near the hook tip decreases with the increase of the plunge depth. Different hook morphologies are obtained under different plunge depths. The tensile-shear load of joint with the void defect initially decreases and then increases with increasing plunge depth. The mean loads of joints under different plunge depths are in the range of 5.1-5.8 kN. The void separates the hook from lap interface, so the cracks initiating from the hook propagate along the sleeve retreating path. The hook has a larger influence on the tensile-shear load of joint than void. All the tensile specimens present a shear-plug fracture mode.

Słowa kluczowe

EN

refill friction stir spot welding; 2060 aluminum alloys; plunge depth; defect characteristics; mechanical properties

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2021
• Tom: Vol. 66, iss. 1
• Strony: 153--161
• Opis fizyczny: Bibliogr. 20 poz., fot., rys.

Twórcy

autor

Shang Zhen

• Shenyang Aerospace University, College of Aerospace Engineering, Shenyang 110136, China

autor

Zuo Yingying

• Shenyang Aerospace University, College of Aerospace Engineering, Shenyang 110136, China

autor

Ji Shude

• Shenyang Aerospace University, College of Aerospace Engineering, Shenyang 110136, China

autor

Wang Yue

• Beihang University, School of Mechanical Engineering and Automation, Beijing, 100083, China

autor

Chai Peng

• Beihang University, School of Mechanical Engineering and Automation, Beijing, 100083, China

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Uwagi

1. This work is supported by the National Natural Science Foundation of China (No. 51705339) and Aeronautical Science Foundation of China (No. 20171125002).

2. Yingying Zuo and Zhen Shang contributed equally to this work.

3. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).