Microstructure and mechanical properties of L415/N08825 bimetallic composite pipe welded joint using GTAW + SMAW

• Autorzy: Wang Liang , Wu Deng , Xu Ming , Hu Yiwen , Zhou Peishan

Identyfikatory

DOI

10.1007/s43452-022-00554-x

• Języki publikacji: EN

Abstrakty

EN

The L415/N08825 bimetallic composite pipe welded joint was produced by gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW) using nickel superalloy Inconel 6625 filler. The dendritic austenite grows in the direction perpendicular to the fusion line in the weld metal. The main elements, such as Cr, Ni, Mo and Fe show a large concentration gradient in the interface of the HAZ and weld metal. The unmixed zone in the three-phase zone is because of the differences in thermo-physics properties. The yield strength and tensile strength are 432 and 582 MPa, respectively. The interface between the cladding layer and the base layer fracture first, then the cladding layer, and the base layer finally. Compared with the impact toughness of the weld metal, the HAZ has a better impact toughness. Moreover, the average hardness of the weld is higher than that of the base metal and the HAZ. After welding, the HAZ is softened, and the hardness of the fusion line is higher than that of the base metal. The mechanical properties of the welded joint meet the standard requirements and it is advisable to use the GTAW + SMAW process for the welding of L415/N08825 bimetallic composite pipe.

Słowa kluczowe

EN

L415/N08825; bimetallic composite pipe; welded joint; mechanical properties

PL

L415/N08825; rura bimetaliczna; rura kompozytowa; złącze spawane; właściwości mechaniczne

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 1
• Strony: art. no. e18, 2023
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Wang Liang

• School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
• School of Engineering, Southwest Petroleum University, Chengdu 610500, China

autor

Wu Deng

• China Special Equipment Inspection and Research Institute, Beijing 100029, China

autor

Xu Ming

• China Special Equipment Inspection and Research Institute, Beijing 100029, China

autor

Hu Yiwen

• Patent Examination Cooperation Sichuan Center of the Patent Office, CNIPA, Chengdu 610500, China

autor

Zhou Peishan

• School of Engineering, Southwest Petroleum University, Chengdu 610500, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)