Hydrogen Re-Embrittlement of Aerospace grade High Strength Steels

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Published June 29, 2012
DOI: https://doi.org/10.3221/IGF-ESIS.21.04

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R. Valentini Department of Chemical Engineering, University of Pisa, Pisa (Italy) C. Colombo Department of Chemical Engineering, University of Pisa, Pisa (Italy) M. De Sanctis Department of Chemical Engineering, University of Pisa, Pisa (Italy) G. Lovicu Department of Chemical Engineering, University of Pisa, Pisa (Italy)

Abstract

Hydrogen Re-Embrittlement on anodically coated high strength steels is a relevant risk for aerospace structures due to the possibility of hydrogen uptake during the operative life of the components. AISI 4340 and Maraging 250 unnotched tensile specimens were subjected to SSRT in order to evaluate the influence of test environment on time to failure. Fracture surfaces were examined by SEM analysis to evaluate the degree of embrittlement and to correlate it with hydrogen diffusivity of the tested steels.

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Issue
Vol 6 No 21 (2012): July 2012
Section
Miscellanea

How to Cite

Hydrogen Re-Embrittlement of Aerospace grade High Strength Steels. (2012). Fracture and Structural Integrity, 6(21), 30-36. https://doi.org/10.3221/IGF-ESIS.21.04

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How to Cite

Hydrogen Re-Embrittlement of Aerospace grade High Strength Steels. (2012). Fracture and Structural Integrity, 6(21), 30-36. https://doi.org/10.3221/IGF-ESIS.21.04

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