Recent Developments in Assessing Microstructure-Sensitive Early Stage Fatigue of Polycrystals (Postprint)

Musinski, William D.

doi:10.21236/ada603892

2014

DOI: 10.21236/ada603892

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Recent Developments in Assessing Microstructure-Sensitive Early Stage Fatigue of Polycrystals (Postprint)

William D. Musinski¹

Abstract: This report was cleared for public release by the USAF 88th Air Base Wing (88 ABW) Public Affairs Office (PAO) and is available to the general public, including foreign nationals. Copies may be obtained from the Defense Technical Information Center (DTIC) (http://www.dtic.mil).

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2018

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The effect of pit size and density on the fatigue behaviour of a pre‐corroded martensitic stainless steel

McMurtrey

Mills

Burns

2018

Fatigue Fract Eng Mat Struct

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UNS S17400 steel is used in turbines for the aerospace and utility industries. While it is generally corrosion resistant, it is susceptible to pitting when exposed to aqueous chloride environments. Effects of pitting characteristics, such as depth, width, and local density on fatigue life, have been studied in this work to better inform criteria for component replacement or repair. While pit depth correlates well with cracking, the deepest pit never initiated the crack that ultimately led to failure. The clustering of pits, or local pitting density, also correlated well with crack initiation location; however, the densest region of pitting was not always the location where cracking occurred. There is likely no single metric that directly correlates pitting with fatigue cracking, rather there is a combination of pitting characteristics that ultimately lead to cracking. The results from this work suggest that pit depth and local pitting density are among the more important metrics.

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The effect of pit size and density on the fatigue behaviour of a pre‐corroded martensitic stainless steel

McMurtrey

Mills

Burns

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

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Recent Developments in Assessing Microstructure-Sensitive Early Stage Fatigue of Polycrystals (Postprint)

Abstract: This report was cleared for public release by the USAF 88th Air Base Wing (88 ABW) Public Affairs Office (PAO) and is available to the general public, including foreign nationals. Copies may be obtained from the Defense Technical Information Center (DTIC) (http://www.dtic.mil).

Cited by 1 publication

References 99 publications

The effect of pit size and density on the fatigue behaviour of a pre‐corroded martensitic stainless steel

The effect of pit size and density on the fatigue behaviour of a pre‐corroded martensitic stainless steel

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