Fatigue behavior of carburized steel at long lives

D. V. Nelson*, Z. Long

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The fatigue behavior of two carburized steels is investigated with rotating bending tests for lives between approximately 105 and 108 cycles. Cracks are observed to start at sub-surface inclusions within carburized cases and form “fish eyes” often seen in high cycle fatigue of hardened steels. Optically dark areas (ODAs) are found surrounding the inclusions that acted as crack origins. Fatigue strengths are evaluated by Murakami’s √area model, but accounting for the influence of residual stress and hardness at the different depths at which cracks started. Values of stress intensity factor range at the periphery of inclusions and the outer border of ODAs are computed accounting for the influence of residual stress. Possible factors that may influence crack growth within ODAs are discussed.

源语言英语
主期刊名Conference Proceedings of the Society for Experimental Mechanics Series
编辑Allison M. Beese, Alan T. Zehnder, Shuman Xia
出版商Springer Science and Business Media, LLC
105-114
页数10
版本2016
ISBN(电子版)9783319152356, 9783319216102
DOI
出版状态已出版 - 2016
活动2015 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Costa Mesa, 美国
期限: 8 6月 201511 6月 2015

出版系列

姓名Conference Proceedings of the Society for Experimental Mechanics Series
编号2016
8
ISSN(印刷版)2191-5644
ISSN(电子版)2191-5652

会议

会议2015 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
国家/地区美国
Costa Mesa
时期8/06/1511/06/15

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