Effect of variable amplitude on fatigue life of 17CrNi steel beyond 10<sup>7</sup> cycles-Reference-Cited by-同舟云学术

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

Published:2023-10-01 Issue:15 Volume:39 Page:2158-2167
ISSN:0267-0836
Container-title:Materials Science and Technology
language:en
Short-container-title:Materials Science and Technology

Author:

Nehila Abdelhak¹^ORCID,Li Wei²

Affiliation:

1. Space Technology Research Division, Centre for Satellite Technology and Development, Algerian Space Agency, Oran, Algeria

2. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, People's Republic of China

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.

Funder

National Natural Science Foundation of China

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1080/02670836.2023.2195277

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