Effect of variable amplitude on fatigue life of 17CrNi steel beyond 107 cycles

Abdelhak Nehila; Wei Li

doi:10.1080/02670836.2023.2195277

Effect of variable amplitude on fatigue life of 17CrNi steel beyond 10⁷ cycles

Abdelhak Nehila^*
, Wei Li

^*Corresponding author for this work

School of Mechanical Engineering

Algerian Space Agency

Research output: Contribution to journal › Article › peer-review

Abstract

To study the effect of the variable amplitude on the carburised 17CrNi high-strength steel, very high cycle fatigue tests were performed on smooth specimens under the stress ratios of 0 and −1. After the experiment, the characteristics of the fracture surfaces were investigated by means of an optical microscope and a scanning electron microscope. Circular-formed marks were found around the inclusion inside the fisheye. Finally, based on five damage models, the fatigue life of the carburised 17CrNi high-strength steel was predicted. The comparison of the calculated lives with the experimental data shows that the modified Miner’s criterion is the most accurate and it can adequately characterise the fatigue life of the 17CrNi steel.

Original language	English
Pages (from-to)	2158-2167
Number of pages	10
Journal	Materials Science and Technology (United Kingdom)
Volume	39
Issue number	15
DOIs	https://doi.org/10.1080/02670836.2023.2195277
Publication status	Published - 2023

Keywords

Variable amplitude
damage model
life prediction
stress ratio
very high cycle fatigue

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10.1080/02670836.2023.2195277

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title = "Effect of variable amplitude on fatigue life of 17CrNi steel beyond 107 cycles",

abstract = "To study the effect of the variable amplitude on the carburised 17CrNi high-strength steel, very high cycle fatigue tests were performed on smooth specimens under the stress ratios of 0 and −1. After the experiment, the characteristics of the fracture surfaces were investigated by means of an optical microscope and a scanning electron microscope. Circular-formed marks were found around the inclusion inside the fisheye. Finally, based on five damage models, the fatigue life of the carburised 17CrNi high-strength steel was predicted. The comparison of the calculated lives with the experimental data shows that the modified Miner{\textquoteright}s criterion is the most accurate and it can adequately characterise the fatigue life of the 17CrNi steel.",

keywords = "Variable amplitude, damage model, life prediction, stress ratio, very high cycle fatigue",

author = "Abdelhak Nehila and Wei Li",

note = "Publisher Copyright: {\textcopyright} 2023 Institute of Materials, Minerals and Mining.",

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doi = "10.1080/02670836.2023.2195277",

language = "English",

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T1 - Effect of variable amplitude on fatigue life of 17CrNi steel beyond 107 cycles

AU - Nehila, Abdelhak

AU - Li, Wei

PY - 2023

Y1 - 2023

N2 - To study the effect of the variable amplitude on the carburised 17CrNi high-strength steel, very high cycle fatigue tests were performed on smooth specimens under the stress ratios of 0 and −1. After the experiment, the characteristics of the fracture surfaces were investigated by means of an optical microscope and a scanning electron microscope. Circular-formed marks were found around the inclusion inside the fisheye. Finally, based on five damage models, the fatigue life of the carburised 17CrNi high-strength steel was predicted. The comparison of the calculated lives with the experimental data shows that the modified Miner’s criterion is the most accurate and it can adequately characterise the fatigue life of the 17CrNi steel.

AB - To study the effect of the variable amplitude on the carburised 17CrNi high-strength steel, very high cycle fatigue tests were performed on smooth specimens under the stress ratios of 0 and −1. After the experiment, the characteristics of the fracture surfaces were investigated by means of an optical microscope and a scanning electron microscope. Circular-formed marks were found around the inclusion inside the fisheye. Finally, based on five damage models, the fatigue life of the carburised 17CrNi high-strength steel was predicted. The comparison of the calculated lives with the experimental data shows that the modified Miner’s criterion is the most accurate and it can adequately characterise the fatigue life of the 17CrNi steel.

KW - Variable amplitude

KW - damage model

KW - life prediction

KW - stress ratio

KW - very high cycle fatigue

UR - https://www.scopus.com/pages/publications/85152091983

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DO - 10.1080/02670836.2023.2195277

M3 - Article

AN - SCOPUS:85152091983

SN - 0267-0836

VL - 39

SP - 2158

EP - 2167

JO - Materials Science and Technology (United Kingdom)

JF - Materials Science and Technology (United Kingdom)

IS - 15

ER -

Effect of variable amplitude on fatigue life of 17CrNi steel beyond 10⁷ cycles

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Keywords

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