Effect of prestrain on and prediction of fatigue limit in carbon steel

Minwoo Kang; Yuuta Aono; Hiroshi Noguchi

doi:10.1016/j.ijfatigue.2007.01.024

Effect of prestrain on and prediction of fatigue limit in carbon steel

Minwoo Kang, Yuuta Aono, Hiroshi Noguchi

Strength of materials

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

28 Citations (Scopus)

Abstract

The effect of prestrain on the fatigue limit of 0.1% (annealed) and 0.5% (quenched and tempered) carbon steel was investigated. Formulas for predicting the fatigue limit of carbon steels were proposed. The fatigue limit of 0.1% carbon steel increased with increasing surface hardness and surface compressive residual stress imposed by prestrain. The fatigue limit decreased when precracks were generated on the surface, in spite of a large surface compressive residual stress in the case of 0.5% carbon steel. The precrack, variation of surface hardness and surface residual stress were considered to be parameters applicable in formulas for predicting the fatigue limit of prestrained carbon steels. The calculated results of such formulas showed good agreement with the experimental results.

Original language	English
Pages (from-to)	1855-1862
Number of pages	8
Journal	International Journal of Fatigue
Volume	29
Issue number	9-11
DOIs	https://doi.org/10.1016/j.ijfatigue.2007.01.024
Publication status	Published - Sep 1 2007

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Mechanics of Materials

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AU - Noguchi, Hiroshi

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AB - The effect of prestrain on the fatigue limit of 0.1% (annealed) and 0.5% (quenched and tempered) carbon steel was investigated. Formulas for predicting the fatigue limit of carbon steels were proposed. The fatigue limit of 0.1% carbon steel increased with increasing surface hardness and surface compressive residual stress imposed by prestrain. The fatigue limit decreased when precracks were generated on the surface, in spite of a large surface compressive residual stress in the case of 0.5% carbon steel. The precrack, variation of surface hardness and surface residual stress were considered to be parameters applicable in formulas for predicting the fatigue limit of prestrained carbon steels. The calculated results of such formulas showed good agreement with the experimental results.

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