The effect of artificial defects on the fatigue characteristics of AISI 4340 steel

Yaakov B. Unigovski; Dmitry Fishman; Liat Fishman; Liron Shichman; Ofir Moshe; Roni Z. Shneck; Emmanuel M. Gutman

doi:10.55713/jmmm.v31i3.1128

The effect of artificial defects on the fatigue characteristics of AISI 4340 steel

Yaakov B. Unigovski, Dmitry Fishman, Liat Fishman, Liron Shichman, Ofir Moshe, Roni Z. Shneck, Emmanuel M. Gutman

Ben-Gurion University of the Negev

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

Abstract

This study examined the fatigue life (Nf) and fatigue limit (FL) of AISI 4340 steel in relation to surface roughness, artificial defects and shot peening. Artificial surface defects on fatigue specimens were obtained by electrical discharge machining (EDM) or by pre-corrosion in 3.5% NaCl and perchloric acid solutions, followed by a fatigue test. The presence of artificial defects of various sizes, taken into account by the √area parameter, led to a significant decrease in fatigue characteristics, while shot peening contributed to their noticeable improvement. Defects resulting from electrochemical corrosion had a much greater negative effect on fatigue life than defects introduced by EDM.

Original language	American English
Pages (from-to)	53-62
Number of pages	10
Journal	Journal of Metals, Materials and Minerals
Volume	31
Issue number	3
DOIs	https://doi.org/10.55713/jmmm.v31i3.1128
State	Published - 1 Jan 2021

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

Artificial defects
High cyclic fatigue
Low alloy steel
Shot peening
Surface roughness

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Metals and Alloys
Polymers and Plastics
General Materials Science
Biomaterials
Materials Science (miscellaneous)

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10.55713/jmmm.v31i3.1128

Cite this

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abstract = "This study examined the fatigue life (Nf) and fatigue limit (FL) of AISI 4340 steel in relation to surface roughness, artificial defects and shot peening. Artificial surface defects on fatigue specimens were obtained by electrical discharge machining (EDM) or by pre-corrosion in 3.5\% NaCl and perchloric acid solutions, followed by a fatigue test. The presence of artificial defects of various sizes, taken into account by the √area parameter, led to a significant decrease in fatigue characteristics, while shot peening contributed to their noticeable improvement. Defects resulting from electrochemical corrosion had a much greater negative effect on fatigue life than defects introduced by EDM.",

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AU - Fishman, Dmitry

AU - Fishman, Liat

AU - Shichman, Liron

AU - Moshe, Ofir

AU - Shneck, Roni Z.

AU - Gutman, Emmanuel M.

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AB - This study examined the fatigue life (Nf) and fatigue limit (FL) of AISI 4340 steel in relation to surface roughness, artificial defects and shot peening. Artificial surface defects on fatigue specimens were obtained by electrical discharge machining (EDM) or by pre-corrosion in 3.5% NaCl and perchloric acid solutions, followed by a fatigue test. The presence of artificial defects of various sizes, taken into account by the √area parameter, led to a significant decrease in fatigue characteristics, while shot peening contributed to their noticeable improvement. Defects resulting from electrochemical corrosion had a much greater negative effect on fatigue life than defects introduced by EDM.

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The effect of artificial defects on the fatigue characteristics of AISI 4340 steel

Abstract

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Keywords

All Science Journal Classification (ASJC) codes

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