Fatigue Behavior of MIG-Welded 7N01-T4 Aluminum Alloy with Different V-Groove Angles

• Autorzy: Ma Zhongwei , Li Qinghua , Ma Lin , He Zhaokun , Liang Zhimin

Identyfikatory

DOI

10.24425/amm.2019.130129

• Języki publikacji: EN

Abstrakty

EN

7N01-T4 aluminum alloy was welded by metal inert gas welding and the influence of V-groove angle on joint fatigue properties was investigated. The results indicate that the volume of fusion zone (FZ) and the grains in FZ become small when the groove angle decreases to 50° from 70°. Most pores distribute at the FZ edge and fewer pores are formed in the small angle joint. The fatigue crack mainly initiates at the transition region between the weld passes due to the pore concentration. The small angle contributes to increasing joint fatigue properties, especially at the low stress level. The fatigue strength of 50° joint is 103.06 MPa which is 15.3% higher than that of 70° joint.

Słowa kluczowe

EN

7N01-T4 aluminum alloy; MIG welding; V-groove angle; fatigue; fracture

• 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: 2019
• Tom: Vol. 64, iss. 4
• Strony: 1577--1584
• Opis fizyczny: Bibliogr. 34 poz., fot., rys., tab., wzory

Twórcy

autor

Ma Zhongwei

• Shenyang Aerospace University, School of Aerospace Engineering, No. 37 Daoyi South Avenue, Daoyi Development District, Shenyang 110136, China

autor

Li Qinghua

• Shenyang Aerospace University, School of Aerospace Engineering, No. 37 Daoyi South Avenue, Daoyi Development District, Shenyang 110136, China

autor

Ma Lin

• Shenyang Aerospace University, School of Aerospace Engineering, No. 37 Daoyi South Avenue, Daoyi Development District, Shenyang 110136, China

autor

He Zhaokun

• CRRC Sifang Co., Ltd, Qingdao 266111, China

autor

Liang Zhimin

• Hebei University of Science and Technology, School of Material Science and Technology, Shijiazhuang 050018, China

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Uwagi

EN

Qinghua Li and Zhongwei Ma contributed equally to this work.