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Mechanical Behavior of the Weld Joints of Thick Steel Plates Produced by Various Welding Processes

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The effect of a welding process [electrogas welding (EGW) and flux cored arc welding (FCAW)] on the fracture toughness, CTOD (crack tip opening displacement), and mechanical properties (tensile, bending, impact strengths and hardness) of thick weld joints is examined. The CTOD value of the FCAW weld joints was higher than that of the EGW ones. The fractured welded specimen after the CTOD test reveals ductile and cleavage fractures of the weld joint faces after flux cored arc and electrogas weldings, respectively. The mechanical properties of the EGW welded specimens satisfied relevant classification rules. These results suggest that the EGW process is an effective substitute for the current welding process (FCAW) used for high-strength thick steel plates.

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Acknowledgments

This research was financally supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the human resource training project for regional innovation (2012H1B8A2026193).

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Authors and Affiliations

  1. Department of Welding and Joining Science Engineering, Chosun University, Gwangju, Republic of Korea

    HanSur Bang & HeeSeon Bang

  2. Department of Naval Architecture & Mechanics, Chosun College of Science & Technology, Gwangju, Republic of Korea

    ChanSeung Ro

  3. Department of Welding and Joining Science Engineering, Graduate School, Chosun University, Gwangju, Republic of Korea

    SuOk Jeong

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  1. HanSur Bang
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  2. HeeSeon Bang
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Correspondence to HeeSeon Bang.

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Translated from Problemy Prochnosti, No. 1, pp. 240 – 249, January – February, 2015.

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Bang, H., Bang, H., Ro, C. et al. Mechanical Behavior of the Weld Joints of Thick Steel Plates Produced by Various Welding Processes. Strength Mater 47, 213–220 (2015). https://doi.org/10.1007/s11223-015-9650-2

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  • DOI: https://doi.org/10.1007/s11223-015-9650-2

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