Fatigue model of domestic 316LN steel in simulated primary coolant environment of CAP1400
Source abstract
Abstract
Abstract Fatigue tests of domestic 316LN were carried out in the simulated primary coolant environment of CAP1400 (the advanced 3rd generation nuclear power plants developed in China). Effects of temperature, strain rate and dissolved oxygen (DO) on fatigue life were analyzed. Based on the results, a fatigue model was developed. Fatigue life in primary coolant environment increases logarithmically as the temperature decreases from 321 ℃ to 150 ℃. When the temperature decreases to 150 ℃, fatigue life in primary coolant environment is very close to that in air environment. Fatigue life increases as the strain rate increases from 0.004%/s to 1%/s. After the strain increases to more than 0.4%/s, fatigue life in primary coolant environment is very close to that in air environment. Effect of DO on fatigue life in primary coolant environment is not obvious in the DO range of 0.005 ppm to 8 ppm. Compared with NUREG6909 model, the present fatigue model is more accurate in lifetime prediction of domestic 316LN.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Hydrogen embrittlement and corrosion behaviors in metals · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Yang · 2000
2. A statistical model of fatigue failure incorporating effects of specimen size and load amplitude on fatigue life10.1080/14786435.2019.1609707 ↗
3. Multiaxial fatigue analysis of notched components using combined critical plane and critical distance approach10.1016/j.ijmecsci.2019.06.027 ↗
4. A statistical model of cleavage fracture toughness of ferritic steel DIN 22NiMoCr37 at different temperatures10.3390/ma12060982 ↗
5. Evaluation of size effect on strain-controlled fatigue behavior of a quench and tempered rotor steel: experimental and numerical study10.1016/j.msea.2018.08.073 ↗
6. Statistical size scaling of breakage strength of irregularly-shaped particles10.1016/j.tafmec.2019.04.008 ↗
7. A new critical plane-energy model for multiaxial fatigue life prediction of turbine disc alloys10.1016/j.engfailanal.2018.07.001 ↗
8. Statistical assessment of notch toughness against cleavage fracture of ferritic steels10.1111/ffe.12756 ↗
9. On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels10.1080/14786435.2018.1425011 ↗
10. In-situ SEM investigation on fatigue behaviors of additive manufactured Al-Si10-Mg alloy at elevated temperature10.1016/j.engfracmech.2019.03.040 ↗
11. Mechanical design and multifunctional applications of chiral mechanical metamaterials: a review
12. Mechanical properties of anti-tetrachiralauxetic stents10.1016/j.compstruct.2017.11.048 ↗
13. Environmental effect on fatigue strength of stainless steel in PWR primary water-role of crack growth acceleration in fatigue life reduction10.1016/j.ijfatigue.2013.05.008 ↗
14. Environmentally assisted cracking of forged 316LN stainless steel and its weld in high temperature water10.1016/j.corsci.2018.10.032 ↗
15. Asme · 1992
16. Effect of LWR coolant environments on the fatigue life of reactor materials
17. Nuclear energy system safety division, Japan Nuclear Energy Safety Organization · 2011
18. Chopra · 2005
19. A Proposal of fatigue life correction factor fen for austenitic stainless steels in LWR water environments10.1115/1.1613945 ↗
20. Effects of temperature on corrosion fatigue behavior of 316LN stainless steel in high-temperature pressurized water10.1016/j.corsci.2018.10.023 ↗
21. Final Proposal of Environmental Fatigue Life
22. Synergistic effect of mechanical and environmental damages of 316LN stainless steel under different fatigue strain amplitudes in high-temperature pressurized water10.1016/j.msea.2018.11.081 ↗
23. Effects of mixed strain rates on low cycle fatigue behaviors of austenitic stainless steels in a simulated PWR environment10.1016/j.ijfatigue.2015.06.021 ↗
24. NRC · 2007
25. The general design and technology innovations of CAP140010.1016/J.ENG.2016.01.018 ↗
26. Ge · 2008
27. Fatigue behavior of domestic 316LN under Simulated AP1000 first loop water environment
28. Fatigue mechanism of domestic 316LN stainless steel in simulated AP1000 first-loop water environment10.4028/www.scientific.net/MSF.913.247 ↗
29. Metallic materials – fatigue testing – axial strain-controlled method
30. Research on low cycle fatigue behavior of domestic 316LN stainless steel at room temperature
31. Strain-rate dependent fatigue behavior of 316LN stainless steel in high-temperature water10.1016/j.jnucmat.2017.03.040 ↗