Development of scaling parameter S for negative stress ratios R based on trend in experimental data for fatigue crack growth rates of austenitic stainless steels for ASME code Section XI

Negyesi, M.*; Yamaguchi, Yoshihito; Hasegawa, Kunio; Lacroix, V.*; Morley, A.*

Journal of Pressure Vessel Technology, 147(2), p.021201_1 - 021201_7, 2025/04

https://doi.org/10.1115/1.4067484

Allowable Stress and Allowable Flaw Sizes Estimated by Converted Tensile Properties from Hardness for Austenitic Stainless Steel Pipe

Ha, Yoosung; Yamaguchi, Yoshihito; Hasegawa, Kunio; Negyesi, M.*

Proceedings of ASME 2024 Pressure Vessels & Piping Conference (PVP 2024) (Internet), 6 Pages, 2024/07

Effect of temperature on the fatigue crack growth rates of austenitic stainless steels in an air environment for ASME Code Section XI

Morley, A.*; Negyesi, M.*; Hasegawa, Kunio

Proceedings of ASME 2024 Pressure Vessels & Piping Conference (PVP 2024) (Internet), 7 Pages, 2024/07

Fatigue crack growth rates for stainless steels in air environment are provided by the ASME Code in Section XI. The crack growth rates increase with increasing temperature, and the temperature effect is expressed by a parameter ST. The current parameter ST is cumbersome, and original basis for the temperature function is questionable, consisting mostly of testing outside of the bounds of the temperatures of interest to its application in ASME Code Section XI. An alternative equation for ST for stainless steels in an air environment is proposed for ASME Code Section XI, based on the literature experimental data surveyed in this study.

The Effect of air fraction in steam on the embrittlement of Zry-4 fuel cladding oxidized at 1273-1573 K

Negyesi, M.; Amaya, Masaki

Oxidation of Metals, 92(5-6), p.439 - 455, 2019/12

https://doi.org/10.1007/s11085-019-09939-5

Effect of experimental setting and surface roughness on oxidation behavior of Zry-4 in steam at 1273 K

Negyesi, M.; Amaya, Masaki

Proceedings of 27th International Conference on Nuclear Engineering (ICONE-27) (Internet), 8 Pages, 2019/05

Oxidation kinetics of Zry-4 fuel cladding in mixed steam-air atmospheres at temperatures of 1273 - 1473 K

Negyesi, M.; Amaya, Masaki

Journal of Nuclear Science and Technology, 54(10), p.1143 - 1155, 2017/10

https://doi.org/10.1080/00223131.2017.1344583

Oxidation behavior of Zry-4 in steam-air mixtures at high temperature

Negyesi, M.; Amaya, Masaki

Proceedings of Annual Topical Meeting on LWR Fuels with Enhanced Safety and Performance (TopFuel 2016) (USB Flash Drive), p.1065 - 1074, 2016/09

Study on breakaway oxidation of Zry-4 fuel cladding

Negyesi, M.

no journal, , 

Oxidation and embrittlement behaviors of Zry-4 cladding in steam-air mixtures at high temperatures

Negyesi, M.

no journal, ,