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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.8
- 수록면
- 219 - 225 (7page)
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초록· 키워드
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This study deals with the effect of austempering temperature and time on the microstructures and mechanical properties of high-carbon nano-bainite steels. Although all the austempered specimens are mainly composed of bainite, martensite, and retained austenite, the specimens which are austempered at lower temperatures contain finer packets of bainite. As the duration for austempering increases, bainite packets are clearly seen due to larger amount of carbon atoms being redistributes into bainite and retained austenite during bainite transformation. As the austempering time increases, the hardness of the specimens gradually decreases as a result of lower martensite volume fraction, and later increases again due to the formation of nano-bainite structure. The Charpy impact test results indicate that the impact toughness of the austempered specimens can be improved if the formation of nano-bainite structure and the transformation induced plasticity effect of retained austenite are optimized at higher austempering temperature.
목차
Abstract
1. 서론
2. 실험 방법
3. 실험 결과 및 고찰
4. 결론
REFERENCES
참고문헌 (16)
참고문헌 신청
X. Zhao, F. Zhang, Z. Yang, J. Zhao, 2019, Cyclic Deformation Behavior and Microstructure Evolution of High-Carbon Nano-Bainitic Steel at Different Tempering Temperatures, Mater. Sci. Eng. A, Vol. 751, pp. 323~331.
W. Solano-Alvarez, E. J. Pickering, H. K. D. H. Bhadeshia, 2014, Degradation of Nanostructured Bainitic Steel Under Rolling Contact Fatigue, Mater. Sci. Eng. A, Vol. 617, pp. 156~164.
W. Solano-Alvarez, E. J. Pickering, M. J. Peet, K. L. Moore, J. Jaiswal, A. Bevan, H. K. D. H. Bhadeshia, 2016, Soft Novel Form of White-Etching Matter and Ductile Failure of Carbide-Free Bainitic Steels Under Rolling Contact Stresses, Acta Mater., Vol. 121, pp. 215~226.
H. K. D. H. Bhadeshia, Nanostructured Bainite, 2009, Proc. Math. Phys. Eng. Sci., Vol. 466, No. 2113, pp. 3~18.
J. Tian, G. Xu, Z. Jiang, H. Hu, M. Zhou, 2018, Effect of Ni Addition on Bainite Transformation and Properties in a 2000 MPa Grade Ultrahigh Strength Bainitic Steel, Met. Mater. Int., Vol. 24, No. 6, pp. 1202~1212.
W. Solano-Alvarez, E. J. Pickering, H. K. D. H. Bhadeshia, 2014, Degradation of Nanostructured Bainitic Steel Under Rolling Contact Fatigue, Mater. Sci. Eng. A, Vol. 617, pp. 156~164.
W. Solano-Alvarez, E. J. Pickering, M. J. Peet, K. L. Moore, J. Jaiswal, A. Bevan, H. K. D. H. Bhadeshia, 2016, Soft Novel Form of White-Etching Matter and Ductile Failure of Carbide-Free Bainitic Steels Under Rolling Contact Stresses, Acta Mater., Vol. 121, pp. 215~226.
H. K. D. H. Bhadeshia, Nanostructured Bainite, 2009, Proc. Math. Phys. Eng. Sci., Vol. 466, No. 2113, pp. 3~18.
J. Tian, G. Xu, Z. Jiang, H. Hu, M. Zhou, 2018, Effect of Ni Addition on Bainite Transformation and Properties in a 2000 MPa Grade Ultrahigh Strength Bainitic Steel, Met. Mater. Int., Vol. 24, No. 6, pp. 1202~1212.
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UCI(KEPA) : I410-ECN-0101-2019-551-000946520