Experimental testing and finite element simulations of fatigue crack growth were performed in austenitic 20Cr-25Ni (Alloy 709) steel at different load ratios and elevated temperatures. The experimental tests were performed using compact tension specimens, and crack growth rates were measured at stress intensity factors ranging between 5 and 35 MPa√m. Fractographic analysis using scanning electron microscopy indicated crack surface roughness and secondary cracking depending on testing temperature and load ratio. Finite element simulations of fatigue crack growth were performed to compute plasticity-induced crack opening loads and predict crack growth rates. Predictions of fatigue crack growth rates using finite element simulations were performed using the computed crack-tip opening loads, and they are shown to match well the experimental measurements.

Highlights

Crack growth rates were measured in compact tension specimens of steel Alloy 709.
Computational simulations of plasticity-induced crack closure were performed with ABAQUS.
Fatigue crack growth predictions are compared with test data at high temperatures.
Crack opening loads can account for load ratio effects in Alloy 709.

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DATA AVAILABILITY STATEMENT

Research data are not shared.

REFERENCES

1Yamamoto Y, Maziasz PJ, Sham TL. Report on the optimization and testing results of advanced austenitic alloys, Internal report, ORNL/TM-2012/401;2012. 2012.
Google Scholar
2Sham S. Advanced reactor concepts program—ARC materials development—accomplishments and plans 2013. https://www.energy.gov/sites/prod/files/2013/09/f2/ARC-Matls-CrossCut-2013.pdf
Google Scholar
3Upadhayay S, Li H, Bowen P, Rabiei A. A study on tensile properties of Alloy 709 at various temperatures. Mater Sci Eng A. 2018; 733: 338-349. doi:10.1016/J.MSEA.2018.06.089
10.1016/j.msea.2018.06.089
CAS Web of Science® Google Scholar
4Ding R, Yan J, Li H, Yu S, Rabiei A, Bowen P. Deformation microstructure and tensile properties of Alloy 709 at different temperatures. Mater Des. 2019; 176:107843. doi:10.1016/j.matdes.2019.107843
10.1016/j.matdes.2019.107843
CAS Web of Science® Google Scholar
5Ramirez J, Potirniche GP, Shaber N, et al. The influence of plasticity-induced crack closure on creep-fatigue crack growth in two heat-resistant steels. Int J Fatigue. 2019; 125: 291-298. doi:10.1016/j.ijfatigue.2019.04.007
10.1016/j.ijfatigue.2019.04.007
CAS Web of Science® Google Scholar
6Porter TD, Findley KO, Kaufman MJ, Wright RN. Assessment of creep-fatigue behavior, deformation mechanisms, and microstructural evolution of alloy 709 under accelerated conditions. Int J Fatigue. 2019; 124: 205-216. doi:10.1016/j.ijfatigue.2019.02.037
10.1016/j.ijfatigue.2019.02.037
CAS Web of Science® Google Scholar
7Paris P, Erdogan F. A critical analysis of crack propagation laws. J Basic Eng. 1963; 85(4): 528-533.
10.1115/1.3656900
CAS Google Scholar
8Wolf E. Fatigue crack closure under cyclic tension. Eng Fract Mech. 1970; 2(1): 37-45. doi:10.1016/0013-7944(70)90028-7
10.1016/0013-7944(70)90028-7
Google Scholar
9Fleck NA. Finite element analysis of plasticity-induced crack closure under plane strain conditions. Eng Fract Mech. 1986; 25(4): 441-449. doi:10.1016/0013-7944(86)90258-4
10.1016/0013-7944(86)90258-4
Web of Science® Google Scholar
10McClung RC, Thacker BH, Roy S. Finite element visualization of fatigue crack closure in plane stress and plane strain. Int J Fract. 1991; 50(1): 27-49. doi:10.1007/BF00035167
10.1007/BF00035167
Web of Science® Google Scholar
11Pommier S. Plane strain crack closure and cyclic hardening. Eng Fract Mech. 2002; 69(1): 25-44. doi:10.1016/S0013-7944(01)00061-3
10.1016/S0013-7944(01)00061-3
Web of Science® Google Scholar
12de Matos PFP, Nowell D. Numerical simulation of plasticity-induced fatigue crack closure with emphasis on the crack growth scheme: 2D and 3D analyses. Eng Fract Mech. 2008; 75(8): 2087-2114. doi:10.1016/J.ENGFRACMECH.2007.10.017
10.1016/j.engfracmech.2007.10.017
Web of Science® Google Scholar
13Lugo M, Daniewicz SR, Newman JC. A mechanics based study of crack closure measurement techniques under constant amplitude loading. Int J Fatigue. 2011; 33(2): 186-193. doi:10.1016/J.IJFATIGUE.2010.08.004
10.1016/j.ijfatigue.2010.08.004
CAS Web of Science® Google Scholar
14Vor K, Gardin C, Sarrazin-Baudoux C, Petit J. Wake length and loading history effects on crack closure of through-thickness long and short cracks in 304L: part II—3D numerical simulation. Eng Fract Mech. 2013; 99: 306-323. doi:10.1016/J.ENGFRACMECH.2013.01.014
10.1016/j.engfracmech.2013.01.014
Web of Science® Google Scholar
15Solanki K, Daniewicz S, Newman J. Finite element modeling of plasticity-induced crack closure with emphasis on geometry and mesh refinement effects. Eng Fract Mech. 2003; 70(12): 1475-1489. doi:10.1016/S0013-7944(02)00168-6
10.1016/S0013-7944(02)00168-6
Web of Science® Google Scholar
16Zapatero J, Moreno B, González-Herrera A. Fatigue crack closure determination by means of finite element analysis. Eng Fract Mech. 2008; 75(1): 41-57. doi:10.1016/J.ENGFRACMECH.2007.02.020
10.1016/j.engfracmech.2007.02.020
Web of Science® Google Scholar
17Gonzalez-Herrera A, Zapatero J. Numerical study of the effect of plastic wake on plasticity-induced fatigue crack closure. Fatigue Fract Eng Mater Struct. 2009; 32(3): 249-260. doi:10.1111/j.1460-2695.2009.01335.x
10.1111/j.1460-2695.2009.01335.x
Web of Science® Google Scholar
18Antunes FV, Camas D, Correia L, Branco R. Finite element meshes for optimal modelling of plasticity induced crack closure. Eng Fract Mech. 2015; 142: 184-200. doi:10.1016/j.engfracmech.2015.06.007
10.1016/j.engfracmech.2015.06.007
Web of Science® Google Scholar
19Boyce BL, Ritchie RO. Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti–6Al–4V. Eng Fract Mech. 2001; 68(2): 129-147. doi:10.1016/S0013-7944(00)00099-0
10.1016/S0013-7944(00)00099-0
Web of Science® Google Scholar
20Kujawski D, Ellyin F. A fatigue crack growth model with load ratio effects. Eng Fract Mech. 1987; 28(4): 367-378. doi:10.1016/0013-7944(87)90182-2
10.1016/0013-7944(87)90182-2
Web of Science® Google Scholar
21Kardomateas C. Predicting the effects of load ratio on the fatigue crack growth rate and fatigue threshold. Fatigue Fract Eng Mater Struct. 1998; 21(4): 411-423. doi:10.1046/j.1460-2695.1998.00539.x
10.1046/j.1460-2695.1998.00539.x
Web of Science® Google Scholar
22Nakai Y, Tanaka K, Nakanishi T. The effects of stress ratio and grain size on near-threshold fatigue crack propagation in low-carbon steel. Eng Fract Mech. 1981; 15(3-4): 291-302. doi:10.1016/0013-7944(81)90062-X
10.1016/0013-7944(81)90062-X
CAS Web of Science® Google Scholar
23Kwofie S, Zhu M-L. Modeling R-dependence of near-threshold fatigue crack growth by combining crack closure and exponential mean stress model. Int J Fatigue. 2019; 122: 93-105. doi:10.1016/j.ijfatigue.2019.01.006
10.1016/j.ijfatigue.2019.01.006
Web of Science® Google Scholar
24Natesan K, Zhang X, Sham TL, Wang H Report on the completion of the procurement of the first heat of Alloy 709, ANL-ART-89. Lemont, IL: 2017.
Google Scholar
25Taylor M, Ramirez J, Charit I, Potirniche GP, Stephens R, Glazoff MV. Creep behavior of Alloy 709 at 700 °C. Mater Sci Eng A. 2019; 762:138083. doi:10.1016/j.msea.2019.138083
10.1016/j.msea.2019.138083
CAS Web of Science® Google Scholar
26Kim BK, Tan L, Xu C, Yang Y, Zhang X, Li M. Microstructural evolution of NF709 (20Cr–25Ni–1.5MoNbTiN) under neutron irradiation. J Nucl Mater. 2016; 470: 229-235. doi:10.1016/J.JNUCMAT.2015.12.037
10.1016/j.jnucmat.2015.12.037
CAS Web of Science® Google Scholar
27Sourmail T, Bhadeshia HKDH. Microstructural evolution in two variants of NF709 at 1023 and 1073 K. Metall Mater Trans a. 2005; 36(1): 23-34. doi:10.1007/s11661-005-0135-y
10.1007/s11661-005-0135-y
Google Scholar
28 ASTM E647-11: standard test method for measurement of fatigue crack growth rates. ASTM Annual. B. ASTM Stand., Philadelphia: 2011.
Google Scholar
29Dougherty JD, Padovan J, Srivatsan TS. Fatigue crack propagation and closure behavior of modified 1070 steel: finite element study. Eng Fract Mech. 1997; 56(2): 189-212. doi:10.1016/S0013-7944(96)00104-X
10.1016/S0013-7944(96)00104-X
Web of Science® Google Scholar
30Wang G, Blom A. A strip model for fatigue crack growth predictions under general load conditions. Eng Fract Mech. 1991; 40(3): 507-533. doi:10.1016/0013-7944(91)90148-T
10.1016/0013-7944(91)90148-T
Web of Science® Google Scholar
31Potirniche GP. A closure model for predicting crack growth under creep-fatigue loading. Int J Fatigue. 2019; 125: 58-71. doi:10.1016/j.ijfatigue.2019.03.029
10.1016/j.ijfatigue.2019.03.029
CAS Web of Science® Google Scholar
32de Matos PFP, Nowell D. Experimental and numerical investigation of thickness effects in plasticity-induced fatigue crack closure. Int J Fatigue. 2009; 31(11-12): 1795-1804. doi:10.1016/J.IJFATIGUE.2008.12.003
10.1016/j.ijfatigue.2008.12.003
Web of Science® Google Scholar
33 ABAQUS. Analyisis user's guide 38.1.2, 2016.
Google Scholar
34 ASTM. E2760-10: standard test method for creep-fatigue crack growth testing, n.d.
Google Scholar

Volume46, Issue10

October 2023

Pages 3596-3609

Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures

Abstract

Highlights

Open Research

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REFERENCES

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Experimental and computational studies of load ratio effect on fatigue crack growth rates in Alloy 709 at elevated temperatures

Abstract

Highlights

Open Research

DATA AVAILABILITY STATEMENT

REFERENCES

References

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