The Effects of Hot Corrosion Pits on the Fatigue Resistance of a Disk Superalloy
Source abstract
Abstract
The effects of hot corrosion pits on low-cycle fatigue life and failure modes of the disk superalloy ME3 were investigated. Low-cycle fatigue specimens were subjected to hot corrosion exposures producing pits, then tested at low and high temperatures. Fatigue lives and failure initiation points were compared to those of specimens without corrosion pits. Several tests were interrupted to estimate the fraction of fatigue life that fatigue cracks initiated at pits. Corrosion pits significantly reduced fatigue life by 60 to 98%. Fatigue cracks initiated at a very small fraction of life for high-temperature tests, but initiated at higher fractions in tests at low temperature. Critical pit sizes required to promote fatigue cracking were estimated based on measurements of pits initiating cracks on fracture surfaces.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · High Temperature Alloys and Creep · Probabilistic and Robust Engineering Design
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. R. Schafrick and R. Sprague (2004) Saga of Gas Turbine Materials Part IV. Adv. Mater. Process. 162(66):41–46
2. R. A. Rapp, Hot Corrosion of Materials: A Fluxing Mechanism?”, Corros. Sci., 44, 2002, p 209–221.10.1016/S0010-938X(01)00057-9 ↗
3. F.S. Pettit and C.S. Giggins (1987) Hot Corrosion. In: C.T. Sims, N.S. Stoloff, W.C. Hagel (Eds.), Superalloys II. John Wiley & Sons, New York, pp 327–358
4. J.L. Smialek, C.A. Barrett, and J.C. Schaeffer, Design for Oxidation Resistance, ASM Handbook V. 20, Materials Selection and Design, American Society for Metals, Metals Park, OH, 1990, p 589–602
5. J.R. Groh and R.W. Duvelius (2001) Influence of Corrosion Pitting on Alloy 718 Fatigue Capability. In: E.A. Loria (Eds.), Superalloy 718, 625, 706, and Derivatives. The Mining, Metallurgy, and Materials Society, Warrendale, PA, p 583–59210.7449/2001/Superalloys_2001_583_592 ↗
6. A. Encinas-Oropesa, G. Drew, M. Hardy, A. Leggett, J. Nicholls, N. Simms, Effects of Oxidation and Hot Corrosion in a Nickel Disc Alloy, Superalloys 2008, ed. R.C. Reed, K.A. Green, P. Caron, T.P. Gabb, M.G. Fahrmann, E.S. Huron, S. A. Woodard, (The Mining, Metallurgy, and Materials Society, Warrendale, PA, 2008), p 609–618.10.7449/2008/Superalloys_2008_609_618 ↗
7. S.I. Rokhlin, J.-Y. Kim, H. Nagy, B. Zoofan, Effect of Pitting Corrosion on Fatigue Crack Initiation and Fatigue Life, Eng. Fract. Mech., 62, 1999, p 425–444.10.1016/S0013-7944(98)00101-5 ↗
8. S. Kawai, K. Kasai, Considerations of Allowable Stress of Corrosion Fatigue (Focused on the Influence of Pitting), Fat. Fract. Eng. Struct., 8(2), 1985, p 115–127.10.1111/j.1460-2695.1985.tb01198.x ↗
9. P. Shi, S. Mahadevan, Damage Tolerance Approach for Probabilistic Pitting Corrosion Fatigue Life Prediction, Eng. Fract. Mech., 68, 2001, p 1493–1507.10.1016/S0013-7944(01)00041-8 ↗
10. D.P. Mourer, J.L. Williams, Dual Heat Treat Process Development for Advanced Disk Applications, Superalloys 2004, ed. K.A. Green, T.M. Pollock, H. Harada, T.E. Howson, R.C. Reed, J.J. Schirra, S. Walston, The Mining, Metallurgy, and Materials Society, Warrendale, PA, 2004, p 401–40810.7449/2004/Superalloys_2004_401_407 ↗
11. J. R. Groh, D. P. Mourer, Alternate Material for Elevated Temperature Turbine Cooling Plate Applications, Superalloys 2004, ed. K. A. Green, T. M. Pollock, H. Harada, T. E. Howson, R. C. Reed, J. J. Schirra, S. Walston, The Mining, Metallurgy, and Materials Society, Warrendale, PA, 2004, p 101–10810.7449/2004/Superalloys_2004_101_108 ↗
12. T.P. Gabb, J. Telesman, P.T. Kantzos, and K. O’Connor, “Characterization of the Temperature Capabilities of Advanced Disk Alloy ME3,” NASA/TM-2002-211796, National Aeronautics and Space Administration, Washington, DC, August 2002
13. T.P. Gabb, A. Garg, D.L. Ellis, and K.M. O’Connor, “Detailed Micro Characterization of the Disk Alloy ME3,” NASA/TM-2004-213066, National Aeronautics and Space Administration, Washington, DC, May 2004
14. W. Weibull (1951) A Statistical Distribution Function of Wide Applicability. ASME J. Appl. Mech. 18:293–29710.1115/1.4010337 ↗
15. R.B. Abernethy (2006) The New Weibull Handbook, 5th edn. Robert B. Abernethy, North Palm Beach, FL
16. P.S. Prevey, X-Ray Diffraction Residual Techniques, Metals Handbook, 9th ed., American Society for Metals, Metals Park, OH, 1986, 10, p 380–39210.31399/asm.hb.v10.a0001761 ↗
17. T.P. Gabb, J. Telesman, P.T. Kantzos, A. Garg, Effects of Temperature on Failure Modes for a Nickel-Base Disk Superalloy, J. Fail. Anal. Prev., 7(1), 2007, p 56–6510.1007/s11668-006-9002-4 ↗
18. R.H. Vanstone and T.L. Richardson, “Potential-Drop Monitoring of Cracks in Surface-Flawed Specimens,” ASTM STP 977, American Society for Testing and Materials, West Conshohocken, PA, 1985, p 148–16610.1520/STP32885S ↗