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논문 기본 정보

자료유형
학술저널
저자정보
Hee‑Seon Bang (Chosun University) Seong Min Hong (Osaka University) Atanu Das (Chosun University) Han‑Sur Bang (Chosun University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.5
발행연도
2021.1
수록면
1,193 - 1,204 (12page)

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초록· 키워드

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Hybrid friction stir welding, adopting an external pre-heat source in front of the friction stir welding (FSW) tool, is knownas a way of overcoming the disadvantages of conventional FSW; lack of plastic flow and excessive tool wear. In joining ofaluminum alloy to steel, presence of intermetallics (IMC) is essential, but its excessive growth can degrade the joint qualityby its brittleness. In this study, joining of 2.5 mm thick Al5052 aluminum alloy and 1.4 mm thick DP590 high strength steelhas been carried out by FSW and TIG assisted hybrid friction stir welding (HFSW) through experiments and numericalanalysis. Joints characteristics of two process was compared to optimize the process parameters. A 3-D model was developedto estimate the thermal elastic–plastic characteristics of the joints. It was confirmed that the joint efficiency of HFSW jointshas been improved to 84% than that of FSW (74%). 2.74 μm thickness of IMC layer was formed in HFSW joints and satisfiedthe permissible thickness (under 10 μm). The maximum residual stress (σzz) in welding direction was slightly higherat the HFSW joints than at the FSW joints. The overall results from experiment and simulation confirmed that HFSW is aneffective way of joining Al5052 to DP590.

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