Comparative Study of 2060-T8 Al-Li Alloy Friction Stir Welded Joints Between Natural Cooling and Water Cooling

• Autorzy: Ma Lin , Niu Shiyu , Ji Shude , Gong Peng

Identyfikatory

DOI

10.24425/amm.2020.131731

• Języki publikacji: EN

Abstrakty

EN

2060-T8 Al-Li alloy was friction stir butt welded under natural and water cooling conditions. Microstructures and mechanical properties of the welding joints were mainly compared and discussed. By spraying water on the top surface of stir zone, the grain size was reduced, attributing to the improvement of microhardness. The maximum tensile strength under the water cooling reached 461.1 MPa. The joint fractured at the stir zone due to the thickness reduction and the joint softening. The fracture surface consisted of many dimples with various sizes, indicating the typical ductile fracture. The strategy to apply the low heat input at the welding stage and high cooling rate at the cooling stage during FSW is necessary to obtain a high-quality FSW joint.

Słowa kluczowe

EN

2060-T8 Al-Li alloy; friction stir welding; water cooling; microstructure; 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: 2020
• Tom: Vol. 65, iss. 1
• Strony: 305--312
• Opis fizyczny: Bibliogr. 39 poz., fot., rys., tab.

Twórcy

autor

Ma Lin

• Henyang Aerospace University, School of Aerospace Engineering, Shenyang 110136, P. R. China

autor

Niu Shiyu

• Henyang Aerospace University, School of Aerospace Engineering, Shenyang 110136, P. R. China

autor

Ji Shude

• Henyang Aerospace University, School of Aerospace Engineering, Shenyang 110136, P. R. China

autor

Gong Peng

• Henyang Aerospace University, School of Aerospace Engineering, Shenyang 110136, P. R. China

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Uwagi

EN

2. This work is supported by the National Natural Science Foundation of China (No. 51705339), the China Postdoctoral Science Foundation (No. 2016M590821) and the Guangdong Provincial Key Laboratory of Advanced Welding Technology for Ships (No. 2017B030302010).

PL

3. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).