Low-cycle fatigue behavior of austenitic stainless steels with gradient structured surface layer

Ho, Hsin Shen; Zhou, Wenlong; Li, Y.; Liu, K.K.; Zhang, E.

doi:10.1016/j.ijfatigue.2020.105481

Cited by 18 publications

(18 citation statements)

References 33 publications

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“…Similar observations under symmetrical strain control (R = −1) were made by H.S. Ho et al [ 40 ], as well as softening and a fast stabilization presented by S. Romano et al [ 26 ].…”

Section: Resultssupporting

confidence: 85%

The Influence of Heat Treatment on Low Cycle Fatigue Properties of Selectively Laser Melted 316L Steel

et al. 2020

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The paper is a project continuation of the examination of the additive-manufactured 316L steel obtained using different process parameters and subjected to different types of heat treatment. This work contains a significant part of the research results connected with material analysis after low-cycle fatigue testing, including fatigue calculations for plastic metals based on the Morrow equation and fractures analysis. The main aim of this research was to point out the main differences in material fracture directly after the process and analyze how heat treatment affects material behavior during low-cycle fatigue testing. The mentioned tests were run under conditions of constant total strain amplitudes equal to 0.30%, 0.35%, 0.40%, 0.45%, and 0.50%. The conducted research showed different material behaviors after heat treatment (more similar to conventionally made material) and a negative influence of precipitation heat treatment of more porous additive manufactured materials during low-cycle fatigue testing.

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“…Similar observations under symmetrical strain control (R = −1) were made by H.S. Ho et al [ 40 ], as well as softening and a fast stabilization presented by S. Romano et al [ 26 ].…”

Section: Resultssupporting

confidence: 85%

The Influence of Heat Treatment on Low Cycle Fatigue Properties of Selectively Laser Melted 316L Steel

et al. 2020

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“…Figure 2B). 12,17 From Figure 9A, it is also shown that the curve of total strain amplitude versus fatigue life for F00 specimen tends to intersect with the one for F02 specimen when the total strain amplitude is approximately 0.45%. It is well known that the GSed materials as compared with their counterparts do exhibit an extended fatigue life under small strain deformation conditions.…”

Section: Fatigue Lifementioning

confidence: 90%

“…To understand the intrinsic fatigue damage mechanisms, the numerical values of the two material constants (W 0 f and β) of hysteresis energy-based model are hereby evaluated. 16,17,37 The values of W 0 f and β for the GSed and untreated materials are collected from the current work and the literature. 16,17 These data are summarized in Figure 10B, which presents the variation of W 0 f as a function of β. W 0 f and β are found to have a significant correlation that can be fitted well by an inverse powerlaw function, regardless of the presence or absence of GSed surface layer.…”

Section: Fatigue Lifementioning

confidence: 99%

Low‐cycle fatigue behavior of gradient structured austenitic stainless steels under high strain amplitude

Zhou

et al. 2022

Fatigue Fract Eng Mat Struct

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The present work focuses on the investigation of low-cycle fatigue performance of gradient structured (GSed) 316 austenitic steels under high strain amplitude loading conditions. The results show that GSed steels exhibit inherently lower fatigue life than their coarse-grained counterparts. The analyses using energy-based criterion reveals that the fatigue life decrement for GSed steels is attributed to the reduced capability of damage accumulation and the lack of ability to effective damage diffusion. The former is due to the worsened plastic deformation potential and the latter to the degraded surface plastic deformation uniformity.

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“…The value of the residual stresses was determined using X-ray diffraction. Additionally, based on the literature fatigue models for the material used [17][18][19][20][21] and the models of cyclic hardening [21][22][23][24][25][26], the fatigue life of the blade was numerically estimated. The results of the numerical fatigue analysis were compared with the experimental results presented in the publication [27].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Assessment of the Effect of Residual Stresses on the Fatigue Strength of an Aircraft Blade

Bednarz

Misiołek

2021

Materials

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The work presents the results of numerical fatigue analysis of a turbine engine compressor blade, taking into account the values of initial stresses resulting from surface treatment-shot-peening. The values of the residual stresses were estimated experimentally using X-ray diffraction. The paper specifies the values of the residual stresses on both sides of the blade and their reduction due to cutting through the blade-relaxation. The obtained values of the residual stresses were used as initial stresses in the numerical fatigue analysis of the damaged compressor blade, which was subjected to resonant vibrations of known amplitude. Numerical fatigue ε-N life analysis was based on several fatigue material models: Manson’s, Mitchell’s, Baumel-Seeger’s, Muralidharan-Manson’s, Ong’s, Roessle-Fatemi’s, and Median’s, and also on the three models of cyclic hardening: Manson’s, Xianxin’s, and Fatemi’s. Because of this approach, it was possible to determine the relationship between the selection of the fatigue material ε-N model and the cyclic hardening model on the results of the numerical fatigue analysis. Additionally, the calculated results were compared with the results of experimental research, which allowed for a substantive evaluation of the obtained results. These results are of great scientific and practical importance. The problem of determining the fatigue life of blades with defects operating under resonance vibrations is one of the original tasks in the field of fracture mechanics and experimental mechanics. The results obtained are of great importance in the aviation industry and can be used during engine maintenance and inspections to assess the suitability of blades with defects in terms of the needs of further work. This aspect of engineering maintenance is of great importance from the aircraft safety point of view.

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Low-cycle fatigue behavior of austenitic stainless steels with gradient structured surface layer

Cited by 18 publications

References 33 publications

The Influence of Heat Treatment on Low Cycle Fatigue Properties of Selectively Laser Melted 316L Steel

The Influence of Heat Treatment on Low Cycle Fatigue Properties of Selectively Laser Melted 316L Steel

Low‐cycle fatigue behavior of gradient structured austenitic stainless steels under high strain amplitude

Numerical and Experimental Assessment of the Effect of Residual Stresses on the Fatigue Strength of an Aircraft Blade

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