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Research Papers

Low Cycle Fatigue of Alloy 617 at 850 °C and 950 °C

[+] Author and Article Information
J. K. Wright

e-mail: Jill.Wright@inl.gov

R. N. Wright

Materials Science and Engineering,
Idaho National Laboratory,
P. O. Box 1625,
Idaho Falls ID 83415

Contributed by Materials Division of ASME for publication in the Journal of Engineering Materials and Technology. Manuscript received March 21, 2012; final manuscript received January 3, 2013; published online May 6, 2013. Assoc. Editor: Marwan K. Khraisheh.

J. Eng. Mater. Technol 135(3), 031005 (May 06, 2013) (8 pages) Paper No: MATS-12-1052; doi: 10.1115/1.4023673 History: Received March 21, 2012; Accepted January 03, 2013

The low cycle fatigue behavior of Alloy 617 has been evaluated at 850 °C and 950 °C, the temperature range of particular interest for the intermediate heat exchanger on a proposed high-temperature gas-cooled nuclear reactor. Cycles to failure were measured as a function of total strain range and varying strain rate. Results of the current experiments compare well with previous work reported in the literature for a similar range of temperatures and strain rate. The combined data demonstrate a Coffin–Manson relationship, although the slope of the Coffin–Manson fit is close to −1 rather than the typically reported value of −0.5. At 850 °C and a strain rate of 10−3 /s Alloy 617 deforms by a plastic flow mechanism in low cycle fatigue and exhibits some cyclic hardening. At 950 °C for strain rates of 10−3–10−5 /s, Alloy 617 deforms by a solute drag creep mechanism during low cycle fatigue and does not show significant cyclic hardening or softening. At this temperature the strain rate has little influence on the cycles to failure for the strain ranges tested.

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References

Baxi, C. B., Shenoy, A., Kostin, V. I., Kodochigov, N. G., Vasyaev, A. V., Belov, S. E., and Golovko, V. F., 2008, “Evaluation of Alternate Power Conversion Unit Designs for the GT-MHR,” Nucl. Eng. Des., 238(11), pp. 2995–3001. [CrossRef]
Koster, A., Matzner, H. D., and Nicholsi, D. R., 2003, “PBMR Design for the Future,” Nucl. Eng. Des., 222, pp. 231–245. [CrossRef]
Lommers, L. J., Shahrokhi, F., MayerIII, J. A., and Southworth, F. H., 2012, “AREVA HTR Concept for Near-Term Deployment,” Nucl. Eng. Des., 251, pp. 292–296. [CrossRef]
Corum, J. M., and Blass, J. J., 1991, “Rules for Design of Alloy 617 Nuclear Components to Very High Temperatures,” Pres. Ves. P., 215, pp. 147–153.
Nickel, H., Bodmann, E., and Seehafer, H. J., 1991, “The Materials Program for the HTR in the FRG: Integrity Concept, Status of the Development of High Temperature Materials and Design Codes,” Energy, 16(1/2), pp. 221–242. [CrossRef]
ASME International, 2004, “Boiler & Pressure Vessel Code Section I,” Rules for Construction of Power Boilers.
ASME International, 2004, “Boiler & Pressure Vessel Code Section VIII,” Rules for Construction of Pressure Vessels.
ASME International, 2007, “Boiler & Pressure Vessel Code, Section III, Division 1,” Subsection NH—Class 1 Components in Elevated Temperature Service.
Rao, K. B. S., Meurer, H. P., and Schuster, H., 1988, “Creep-Fatigue Interaction of Inconel 617 at 950 °C in Simulated Nuclear Reactor Helium,” Mater. Sci. Eng.: A, 104, pp. 37–51. [CrossRef]
Rao, K. B. S., Schiffers, H., Schuster, H., and Nickel, H., 1988, “Influence of Time and Temperature Dependent Processes on Strain Controlled Low Cycle Fatigue Behavior of Alloy 617,” Metall. Trans. A, 19(2), pp. 359–371. [CrossRef]
Yukawa, S., 1991, “Elevated Temperature Fatigue Design Curves for Ni-Cr-Co-Mo Alloy 617,” 1st JSME/ASME Joint International Conference on Nuclear Engineering, Tokyo, Japan, November 4–7.
ASTM International, 2008, Standard Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696) and Nickel-Chromium Cobalt Molybdenum Alloy (UNS N06617) Plate, Sheet, and Strip.
ASTM International, 2004, E606-04 Standard Practice for Strain-Controlled Fatigue Testing.
Carroll, L., Cabet, C., and Wright, R. N., 2010, “The Role of Environment on High Temperature Creep-Fatigue Behavior of Alloy 617” Proceedings of the ASME 2010 Pressure Vessel and Piping Division Conference (PVP2010), Bellevue, WA, July 18–22, ASME Paper No. PVP2010-26126, pp. 907–916. [CrossRef]
Totemeier, T., and Tian, H., 2007, “Creep-Fatigue-Environment Interactions in Inconel 617,” Mater. Sci. Eng., 468–470, pp. 81–87. [CrossRef]
Carroll, L. J., Cabet, C., Carroll, M. C., and Wright, R. N., 2013, “The Development of Microstructural Damage During Creep-Fatigue of a Nickel Alloy,” Int. J. Fatigue, 47, pp. 115–125. [CrossRef]
Totemeier, T. C., 2007, “High-Temperature Creep-Fatigue of Alloy 617 Base Metal and Weldments,” Eighth International Conference on Creep and Fatigue at Elevated Temperatures (CREEP8), San Antonio, TX, July 22–26, ASME Paper No. CREEP2007-26372, pp. 255-260. [CrossRef]
Wright, J. K., Carroll, L. J., Cabet, C., Lillo, T. M., Benz, J. K., Simpson, J. A., Lloyd, W. R., Chapman, J. A., and Wright, R. N., 2012, “Characterization of Elevated Temperature Properties of Heat Exchanger and Steam Generator Alloys,” Nucl. Eng. Des., 251, pp. 252–260. [CrossRef]
Meurer, H. P., Gnirss, G. K. H., Mergler, W., Raule, G., Schuster, H., and Ullrich, G., 1984, “Investigations on the Fatigue Behavior of High-Temperature Alloys for High-Temperature Gas-Cooled Reactor Components,” Nucl. Tech., 66(2), pp. 315–323.
Coffin, L. F., and Travernelli, J. F., 1959, “The Cyclic Straining and Fatigue of Metals,” Trans. TMS-AIME, 215(5), pp. 794–806.
Manson, S. S., and Hirschberg, M. H., 1963, “Fatigue Behavior in Strain Cycling in the Low and Intermediate Cycle Range,” 10th Sagamore Army Materials Research Conference, Raquette Lake, NY, August 13–16.
Vecchio, K. S., Fitzpatrick, M. D., and Klarstrom, D., 1995, “Influence of Subsolvus Thermomechanical Processing on the Low-Cycle Fatigue Properties of Haynes 230 Alloy,” Metall. Mater. Trans. A, 26(3), pp. 673–689. [CrossRef]
Lu, Y. L., Chen, L. J., Wang, G. Y., Benson, M. L., Liaw, P. K., Thompson, S. A., Blust, J. W., Browning, P. F., Bhattacharya, A. K., Aurrecoechea, J. M., and Klarstrom, D. L., 2005, “Hold-Time Effects on Low-Cycle Fatigue Behavior of Haynes 230 Superalloy at High Temperatures,” Mater. Sci. Eng. A, 409(1–2), pp. 282–291. [CrossRef]
Brechet, Y., Magnin, T., and Sornette, D., 1992, “The Coffin-Manson Law as a Consequence of the Statistical Nature of the Lcf Surface Damage,” Acta Metall. Mater., 40, pp. 2281–2287. [CrossRef]
Murakami, Y., 1988, “Correlation Between Strain Singularity at Crack Tip Under Overall Plastic Deformation and the Exponent of the Coffin-Manson Law,” Low Cycle Fatigue, ASTM STP 942, ASTM, Philadelphia.
Sherby, O. D., and Burke, P. M., 1968, “Mechanical Behavior of Crystalline Solids at Elevated Temperature,” Prog. Mater. Sci., 13, pp. 325–390. [CrossRef]
Taleff, E. M., Green, W. P., Kulas, M.-A., Mcnelley, T. R., and Krajewski, P. E., 2005, “Analysis, Representation and Prediction of Creep Transients in Class I Alloys,” Mater. Sci. Eng. A, 410–411, pp. 32–37. [CrossRef]
Kulas, M.-A., Green, W. P., Taleff, E. M., Krajewski, P. E., and Mcnelley, T. R., 2005, “Deformation Mechanisms in Superplastic AA5083 Materials,” Metall. Mater. Trans. A, 36(5), pp. 1249–1261. [CrossRef]

Figures

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Fig. 4

Maximum and minimum stresses shown for three replicate samples tested at 950 °C and 10−3 /s for (a) 0.4% and (b) 1.0% total strain

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Fig. 5

Peak tensile and compressive stress plotted as a function of cycle for one fatigue test specimen at each total strain range for (a) 850 °C and (b) 950 °C

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Fig. 6

The maximum tensile stress at the midcycle plotted as a function of total strain range for 850 °C and 950 °C

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Fig. 3

Hysteresis loops from midlife cycle for three replicate samples (shown in different colors) tested at 950 °C and 10−3 /s for (a) 0.4% and (b) 1.0% total strain

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Fig. 9

The effect of strain rate on (a) fatigue life and (b) maximum tensile stress at 950 °C

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Fig. 2

Example of transgranular fracture path shown in specimen tested at 0.3% total strain and 950 °C

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Fig. 1

Illustration of failure criterion

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Fig. 7

Stress-strain hysteresis plots for the fatigue tests are shown for selected cycles for 0.6% total strain range at (a) 850 °C and (b) 950 °C

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Fig. 8

The hysteresis loops for a midcycle at each total strain range for (a) 850 °C and (b) 950 °C

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Fig. 10

Fatigue data for (a) 850 °C and (b) 950 °C plotted with data compiled by Yukawa [11] at strain rates of 4 × 10−3 /s and temperatures from 815 °C to 1000 °C. Alloy 617 data from the work of Totemeier and Tian [15] at 1000 °C are also plotted.

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Fig. 11

Effect of test temperature on fatigue life at a strain rate of 10−3 /s

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Fig. 12

Coffin–Manson plot for LCF tests at 10−3 /s, showing a slope of approximately −1.0 when inelastic strain is plotted as a function of fatigue life

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Fig. 17

First, second, and tenth cycle of a 2% total strain range fatigue test at 950 °C

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Fig. 13

Tensile portion of first cycle of the 2% total strain range fatigue hysteresis loop shown with maximum tensile stress values of the 10th and midcycle for each total strain range tested at (a) 850 °C and (b) 950 °C

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Fig. 14

Cyclic hardening at 850 °C determined by fitting Eq. (2) to stress amplitude versus inelastic strain

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Fig. 15

First cycle of 950 °C fatigue tests at three different strain rates

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Fig. 16

Exponential fits to the stress transient observed in the first fatigue cycle at 950 °C for strain rates of (a) 10−3 /s, (b) 10−4 /s, and (c) 10−5 /s

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