GH4169合金自然萌生小裂纹扩展行为的试验研究

doi:10.7527/S1000-6893.2014.0087

Abstract

Abstract:

The growth behavior of naturally-initiated small cracks in single edge notched tensile (SENT) specimens of nickel-based superalloy GH4169 is studied. Fatigue experiments are conducted under constant amplitude loading with the stress ratios R of 0.1 and 0.5 at room temperature. A significant small crack effect is evident in this alloy, and the major part of total fatigue life is consumed in small crack propagation phase. Fracture mode under cyclic loading is established by scanning electron microscopy (SEM) and energy dispersive spectra (EDS) analysis on specimen fracture surfaces. Small cracks initiate from material inclusions, namely Ti(C, N) or Nb(C, N). A transition of fracture mode from faceted, crystallographic fracture to classical striation type of fracture occurs, corresponding to the minimum growth rate at small crack growth rate curve before crack growth acceleration.

Key words: superalloy, small crack effect, fracture mode, inclusion, scatter

CLC Number:

V216.3

ZHANG Li, WU Xueren, HUANG Xinyue. Experimental investigation on the growth behavior of naturally- initiated small cracks in superalloy GH4169[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(3): 840-847.

References

[1] Aeronautical Systems Division, Wright-Patterson Air Force Base. Military Standard 1783 United States Air Force Engine Structural Integrity Program[S]. OH: Aeronautical Systems Division, Wright-Patterson Air Force Base, 1984.

[2] Ghonem H, Nicholas T, Pineau A. Elevated temperature fatigue crack growth in alloy 718—Part Ι: effects of mechanical variables[J]. Fatigue and Fracture of Engineering Material and Structures, 1993, 16(5): 565-576.

[3] The Compile Commitee of Materials Mechanical Data Handbook for Aircraf Engine Design. Materials mechanical data handbook for aircraft engine design (4) [M]. Beijing: Aviation Industry Press, 2010:151-153 (in Chinese). 《航空发动机设计用材料数手册》编委会. 航空发动机设计用材料数据手册(第四册)[M]. 北京: 航空工业出版社, 2010: 151-153.

[4] Miller K J. The short crack problem[J]. Fatigue and Fracture of Engineering Materials and Structures, 1982, 5(3): 223-232.

[5] Wu X R, Newman J C, Zhao W, et al. Small crack growth and fatigue life predictions for high-strength aluminum alloys: Part Ι—experimental and fracture mechanics analysis[J]. Fatigue and Fracture of Engineering Material and Structures, 1998, 21(11): 1289-1306.

[6] Wu X R, Liu J Z. Total fatigue prediction for aeronautical materials by using small-crack theory[J]. Acta Aeronautica et Astronautica Sinica, 2006, 27(2): 219-226 (in Chinese). 吴学仁, 刘建中. 基于小裂纹理论的航空材料疲劳全寿命预测[J]. 航空学报, 2006, 27(2): 219-226.

[7] Luo J, Bowen P. Small and long fatigue crack growth behavior of a PM Ni-based superalloy, Udimet 720[J]. International Journal of Fatigue, 2004, 26(2): 113-124.

[8] Polak J. Cyclic deformation, crack initiation, and low-cycle fatigue[M]//Ritchie R O, Murakami Y. Comprehensive Structural Integrity: Cyclic Loading and Fracture. Amsterdam: Elsevier, 2003: 1-39.

[9] Connolley T, Reed P A S, Starink M J. Short crack initiation and growth at 600 ℃ in notched specimens of inconel 718[J]. Materials Science and Engineering: A, 2003, 340(1-2): 139-154.

[10] Romanoski G R, Jr. The fatigue behavior of small cracks aircraft turbine disk alloys[D]. Massachusetts, MA: Massachusetts Institute of Technology, 1990.

[11] Bache M R, Evans W J, Hardy M C. The effects of environment and loading waveform on fatigue crack growth in inconel 718[J]. International of Fatigue, 1999, 21(Supplement): S69-S77.

[12] Connolley T, Starink M J, Reed P A S. Effect of oxidation on high temperature fatigue crack initiation and short crack growth in inconel 718[C]//Pollock T M, Kissinger RD, Bowman R R, et al., editors. Proceedings of the 9th International Symposium on Superalloys (Superalloys 2000). Warrendale, PA: The Minerals, Metals & Materials Society (TMS). 2000: 435-444.

[13] Xie X S, Zhang L N, Zhang M C, et al. Micro-mechanical behavior study of non-metallic inclusions in nickel-base P/M superalloy[J]. Acta Metallurgica Sinica, 2002, 38(6): 635-642 (in Chinese). 谢锡善, 张丽娜, 张麦仓, 等. 镍基粉末高温合金中夹杂物的微观力学行为研究[J]. 金属学报, 2002, 38(6): 635-642.

[14] Ma X F, Shi H J. On the fatigue small crack behaviors of directionally solidified superalloy DZ4 by in situ SEM observations[J]. International Journal of Fatigue, 2012, 35(1): 91-98.

[15] Huang X Y, Yu H C, Xu M Q, et al.Experimental investigation on microcrack initiation process in nickel-based superalloy DAGH4169[J]. International Journal of Fatigue, 2012, 42: 153-164.

[16] Caton M J, Jha S K. Small fatigue crack growth and failure mode transitions in Ni-base superalloy at elevated temperature[J]. International Journal of Fatigue, 2010, 32(9): 1461-1472.

[17] Mercer C, Soboyejo A B O, Soboyejo W O. Micromechanisms of fatigue crack growth in a forged inconel 718 nickel-based superalloy[J]. Materials Science and Engineering: A, 1999, 270(2): 308-322.

Experimental investigation on the growth behavior of naturally- initiated small cracks in superalloy GH4169

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