Effect of hydrogen and grain boundaries on dislocation nucleation and multiplication examined with a NI-AFM

Afrooz Barnoush; Bo Yang; Horst Vehoff

doi:10.1007/978-3-540-74325-5_20

Effect of hydrogen and grain boundaries on dislocation nucleation and multiplication examined with a NI-AFM

Afrooz Barnoush^*, Bo Yang, Horst Vehoff

^*Corresponding author for this work

Saarland University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

24 Citations (Scopus)

Abstract

A nanoindenting AFM(NI-AFM) with an environment chamber was constructed to study the effect of hydrogen on decohesion and dislocation nucleation and the effect of grain boundaries on dislocation nucleation and multiplication. Ultra fine grained Ni single crystals were examined. It could be clearly shown that hydrogen influences the pop in width and length. Testing single grains with grain sizes below one micron at different rates inside a NI-AFM showed that the rate dependence of ultra fine grained Ni is a result of the interaction of the growing dislocation loops with the boundary.

Original language	English
Title of host publication	Advances in Solid State Physics
Editors	Rolf Haug
Pages	253-269
Number of pages	17
DOIs	https://doi.org/10.1007/978-3-540-74325-5_20
Publication status	Published - 2008
Externally published	Yes

Publication series

Name	Advances in Solid State Physics
Volume	47
ISSN (Print)	1438-4329

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10.1007/978-3-540-74325-5_20

Cite this

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abstract = "A nanoindenting AFM(NI-AFM) with an environment chamber was constructed to study the effect of hydrogen on decohesion and dislocation nucleation and the effect of grain boundaries on dislocation nucleation and multiplication. Ultra fine grained Ni single crystals were examined. It could be clearly shown that hydrogen influences the pop in width and length. Testing single grains with grain sizes below one micron at different rates inside a NI-AFM showed that the rate dependence of ultra fine grained Ni is a result of the interaction of the growing dislocation loops with the boundary.",

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AB - A nanoindenting AFM(NI-AFM) with an environment chamber was constructed to study the effect of hydrogen on decohesion and dislocation nucleation and the effect of grain boundaries on dislocation nucleation and multiplication. Ultra fine grained Ni single crystals were examined. It could be clearly shown that hydrogen influences the pop in width and length. Testing single grains with grain sizes below one micron at different rates inside a NI-AFM showed that the rate dependence of ultra fine grained Ni is a result of the interaction of the growing dislocation loops with the boundary.

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ER -

Effect of hydrogen and grain boundaries on dislocation nucleation and multiplication examined with a NI-AFM

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