Heavy-ion damage in copper, nickel and dilute nickel alloys

Though it has long been appreciated that materials differ in their response to heavy-ion irradiation, the reasons for this are not yet fully understood. To more fully characterize the effects of material, alloying element, irradiation temperature and ion dose on the probability of collapse of a displacement cascade, Cu, Ni, and dilute Ni alloys (Ni-Si and Ni-Al) have been irradiated with 50 and 100 keV heavy-ions (Kr$\sp+$ and Ni$\sp+$) at both 30 and 300K, and to doses ranging from 10$\sp{15}$-10$\sp{17}$ ions m$\sp{-2}$. The irradiations resulted in the formation of vacancy dislocation loops which were examined in a transmission electron microscope (TEM) and characterized by their size, Burgers vector, and formation probability. For some of the irradiations, the HVEM-Accelerator Facility and Argonne National Laboratory was used. This facility is unique in that it allows irradiation and microstructural examination to be performed at temperatures where there is no long-range point defect mobility and the examination of the same area of sample at different dose levels.

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

• Vetrano, John Steven

Contributors dc:contributor

• Robertson, Ian M.

• Engineering, Metallurgy

Statement dc:rights

• Copyright 1990 Vetrano, John Steven

Language dc:language

eng

Identifier

AAI9026344
(UMI)AAI9026344

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20403