Hydrogen segregation, defects, and interactions with dislocations in nickel and aluminum

Deformation experiments were performed to determine the effects of hydrogen and carbon on the activation parameters for dislocation slip in macroscopic nickel tensile specimens. The results show that hydrogen increases the dislocation mobility in Ni and in Ni-H alloys by reducing the activation enthalpy for dislocation motion and carbon reduces the mobility by increasing the enthalpy. Stress relaxation results show that the relaxation proceeds in three stages, which may be characterized by different activation areas.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Materials Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Sirois, Ernest Joseph, Jr.

Contributors dc:contributor

• Birnbaum, Howard K.

• Engineering, Metallurgy
• Engineering, Materials Science

Statement dc:rights

• Copyright 1990 Sirois, Ernest Joseph, Jr

Language dc:language

eng

Identifier

AAI9114415
(UMI)AAI9114415

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20816