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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.10
- 수록면
- 348 - 353 (6page)
이용수
초록· 키워드
오류제보하기
The S355NL steel has garnered attention as a structural material for applications in extremely challenging environments owing to its excellent mechanical properties. This study investigated the hot deformation behavior of S355NL steel through compression tests conducted in a temperature range of 900–1200°C and a strain rate range of 10<SUP>−3</SUP>–1 s<SUP>−1</SUP> to explore the optimal processing parameters. The flow behaviors consisted of an initial rapid increase and subsequent plateau with a marginal decrease in stress. This phenomenon was interpreted in terms of microstructural evolution, such as dislocation density and dynamic recrystallization. The efficiency of power dissipation and instability domains were derived using the dynamic material model based on the compression test dataset, providing a series of processing maps. In contrast to conventional processing maps plotted for a single strain value, this study has established ten maps at a strain interval of 0.1. This approach allowed for the consideration of continuously variable strain parameters, which is inherent to an actual metal-forming process. The efficiency of power dissipation was strongly governed by the high temperatures (≥ 1100°C). The strain rates barely affected the efficiency, but it primarily contributed to the instability domains. The application of high strain rates (≥ 10<SUP>−1</SUP> s<SUP>−1</SUP>) generated a region of negative instability due to the absence of dynamic recrystallization and the presence of cracks at grain boundaries.
목차
Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
REFERENCES
참고문헌 (13)
참고문헌 신청
V. Igwemezie, A. Mehmanparast, A. Kolios, 2018, Materials Selection for XL Wind Turbine Support Structures: A Corrosion-Fatigue Perspective. Mar. Struct. Vol. 61, pp. 381-397. https://doi.org/10.1016/j.marstruc.2018.06.008
A. Jacob, A. Mehmanparast, R. D'Urzo, J. Kelleher, 2019, Experimental and Numerical Investigation of Residual Stress Effects on Fatigue Crack Growth Behaviour of S355 Steel Weldments. Int. J. Fatigue. vol. 128, p. 105196. https://doi.org/10.1016/j.ijfatigue.2019.105196
G. Krauss, 2015, Steels: Processing, Structure, and Performance. ASM International.
H. Y. Ban, G. Shi, Y. J. Shi, Y. Q. Wang, 2011, Research Progress on the Mechanical Property of High Strength Structural Steels. Adv. Mater. Res. Vol. 250~253, pp. 640-648. https://doi.org/10.4028/www.scientific.net/AMR.250-253.640
Y. V. R. K. Prasad, 2003, Processing Maps: A Status Report. J. Mater. Eng. Perform. Vol. 12, No. 6, pp. 638-645. https://doi.org/10.1361/105994903322692420
A. Jacob, A. Mehmanparast, R. D'Urzo, J. Kelleher, 2019, Experimental and Numerical Investigation of Residual Stress Effects on Fatigue Crack Growth Behaviour of S355 Steel Weldments. Int. J. Fatigue. vol. 128, p. 105196. https://doi.org/10.1016/j.ijfatigue.2019.105196
G. Krauss, 2015, Steels: Processing, Structure, and Performance. ASM International.
H. Y. Ban, G. Shi, Y. J. Shi, Y. Q. Wang, 2011, Research Progress on the Mechanical Property of High Strength Structural Steels. Adv. Mater. Res. Vol. 250~253, pp. 640-648. https://doi.org/10.4028/www.scientific.net/AMR.250-253.640
Y. V. R. K. Prasad, 2003, Processing Maps: A Status Report. J. Mater. Eng. Perform. Vol. 12, No. 6, pp. 638-645. https://doi.org/10.1361/105994903322692420
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