Hydrogen Embrittlement Understood

Ian M. Robertson; P. Sofronis; A. Nagao; M. L. Martin; S. Wang; D. W. Gross; K. E. Nygren

doi:10.1007/s11661-015-2836-1

Hydrogen Embrittlement Understood

Ian M. Robertson, P. Sofronis, A. Nagao, M. L. Martin, S. Wang, D. W. Gross, K. E. Nygren

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

Abstract

The connection between hydrogen-enhanced plasticity and the hydrogen-induced fracture mechanism and pathway is established through examination of the evolved microstructural state immediately beneath fracture surfaces including voids, “quasi-cleavage,” and intergranular surfaces. This leads to a new understanding of hydrogen embrittlement in which hydrogen-enhanced plasticity processes accelerate the evolution of the microstructure, which establishes not only local high concentrations of hydrogen but also a local stress state. Together, these factors establish the fracture mechanism and pathway.

Original language	English (US)
Pages (from-to)	2323-2341
Number of pages	19
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	46
Issue number	6
DOIs	https://doi.org/10.1007/s11661-015-2836-1
State	Published - Jun 1 2015

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-015-2836-1

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AU - Sofronis, P.

AU - Nagao, A.

AU - Martin, M. L.

AU - Wang, S.

AU - Gross, D. W.

AU - Nygren, K. E.

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AB - The connection between hydrogen-enhanced plasticity and the hydrogen-induced fracture mechanism and pathway is established through examination of the evolved microstructural state immediately beneath fracture surfaces including voids, “quasi-cleavage,” and intergranular surfaces. This leads to a new understanding of hydrogen embrittlement in which hydrogen-enhanced plasticity processes accelerate the evolution of the microstructure, which establishes not only local high concentrations of hydrogen but also a local stress state. Together, these factors establish the fracture mechanism and pathway.

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Hydrogen Embrittlement Understood

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