A study of the LCF characteristics of the Ni-based superalloy IN738LC

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• 作者：Dongkeun Lee (1)
  To Kang (1) (3)
  Jae-Mean Koo (2)
  Chang-Sung Seok (2)
  Sung-Jin Song (2)
  
  1. Graduate School of Mechanical Engineering ; Sungkyunkwan University ; 2066 ; Seobu-ro ; Jangan-gu ; Suwon ; 440-746 ; South Korea
  3. Nuclear Convergence Technology Development Division ; Korea Atomic Energy Research Institute (KAERI) ; 111 ; Daedeok-daero 989 Beon-gil ; Yuseong-gu ; Daejeon ; 306-353 ; South Korea
  2. Department of Mechanical Engineering ; Sungkyunkwan University ; 2066 ; Seobu-ro ; Jangan-gu ; Suwon ; 440-746 ; South Korea
  
• 关键词：Superalloy ; IN738LC ; Low cycle fatigue ; Indentation ; Life prediction
• 刊名：International Journal of Precision Engineering and Manufacturing
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：16
• 期：4
• 页码：775-780
• 全文大小：1,310 KB
• 参考文献：1. Wright, I. G., Gibbons, T. B. (2007) Recent Developments in Gas Turbine Materials and Technology and their Implications for Syngas Firing. International Journal of Hydrogen Energy 32: pp. 3610-3621 CrossRef
  2. Evans, W., Screech, J., Williams, S. (2008) Thermo-Mechanical Fatigue and Fracture of INCO718. International Journal of Fatigue 30: pp. 257-267 CrossRef
  3. Brooks, J. W., Bridges, P. J. (1988) Metallurgical Stability of Inconel Alloy 718. Superalloys 88: pp. 33-42
  Gas Turbine Blade Superalloy Material Property Handbook. Topical Report, Product ID: 1004652.
  Standard Test Methods for Tension Testing of Metallic Materials. ASTEM E8.
  Standard Test Method for Strain-Controlled Fatigue Testing. ASTEM E606.
  4. Fleury, E., Ha, J. (2001) Thermomechanical Fatigue Behaviour of Nickel base Superalloy IN738LC Part 2-Lifetime Prediction. Materials Science and Technology 17: pp. 1087-1092 CrossRef
  5. Hwang, K. T., Kim, J. H., Yoo, K. B., Lee, H. S., Yoo, Y. S. (2010) Low-Cycle Fatigue in Ni-Base Superalloy IN738LC at Elevated Temperature. Transactions of the Korean Society of Mechanical Engineers A 34鈥?0: pp. 1403-1409 CrossRef
  6. Kim, D. H., Kim, K. G., Kim, J. H., Lee, Y. S., Park, W. S. (2004) Prediction of Low Cycle Fatigue Life for Inconel 617 using Strain Energy Method. Proc. of the KSME Autumn Conference. pp. 285-290
  7. Oh, J. H., Choi, I. C.h., Shin, G. S., Lee, D. B., Kim, S. J., Jang, J. I. (2011) The State-of-the-Art of Nickel-Based Superalloy Development for Advanced Ultra-supercritical Fossil Power Plant Boilers. Trends in Metals & Materials Engineering 24: pp. 27-33
  8. Yoo, K. B., Kim, D. S., Yun, W. N., Kim, J. S. (2011) An Increase of Repair Cycle of used Component in Gas Turbine. Trends in Metals & Materials Engineering 24: pp. 34-43
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  10. Joshi, N. R., Green, R. E. (1972) Ultrasonic Detection of Fatigue Damage. Engineering Fracture Mechanics 4: pp. 577-583 CrossRef
  11. Kenderian, S., Berndt, T. P., Green, R. E., Djordjevic, B. B. (2003) Ultrasonic Monitoring of Dislocations during Fatigue of Pearlitic Rail Steel. Materials Science and Engineering: A 348: pp. 90-99 CrossRef
  12. Kang, T., Kim, H. H., Song, S. J., Kim, H. J. (2012) Characterization of Fatigue Damage of AL6061-T6 with Ultrasound. NDT & E International 52: pp. 51-56 CrossRef
  13. Frouin, J., Sathish, S., Matikas, T. E., Na, J. K. (1999) Ultrasonic Linear and Nonlinear Behavior of Fatigued Ti鈥?Al鈥?V. Journal of Materials Research 14: pp. 1295-1298 CrossRef
  14. Cantrell, J. H., Yost, W. T. (2001) Nonlinear Ultrasonic Characterization of Fatigue Microstructures. International Journal of Fatigue 23: pp. 487-490 CrossRef
  15. Han, X., Li, W., Zeng, Z., Favro, L., Thomas, R. (2002) Acoustic Chaos and Sonic Infrared Imaging. Applied Physics Letters 81: pp. 3188-3190 CrossRef
  16. Solodov, I., Wackerl, J., Pfleiderer, K., Busse, G. (2004) Nonlinear Self-Modulation and Subharmonic Acoustic Spectroscopy for Damage Detection and Location. Applied Physics Letters 84: pp. 5386-5388 CrossRef
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Materials Science
  
• 出版者：Korean Society for Precision Engineering, in co-publication with Springer Verlag GmbH
• ISSN：2005-4602

文摘

In this study, low cycle fatigue (LCF) tests of IN738LC were conducted under high-temperature conditions. The tests were performed with various mechanical strain amplitudes and the relationship between strain amplitude and fatigue life was obtained. In addition, an equation for LCF life prediction was derived from the test results. After obtaining a strain-life diagram from the LCF test results, additional LCF tests were conducted according to the extent of damage. The LCF tests were taken at various degrees of damage in order to observe the change in mechanical properties the severity of damage. For this purpose, indentation tests were conducted and the relationship between hardness and damage was obtained. To nondestructively assess the low cycle fatigued IN738LC, the subharmonic nonlinearity parameter was first introduced because of the high attenuation properties of IN738LC. Until now, the subharmonic technique has been applied only to crack evaluation problems. This technique is presented as an effective tool for assessing low cycle fatigued IN738LC in this paper.