The compositional and temperature dependence of radiation-induced void nucleation and swelling in austenitic alloys

Author

• Bahram Esmailzadeh

Abstract

"The objective of this study is to introduce a model which can demonstrate the major features of the compositional and temperature dependence of radiation-induced swelling of austenitic alloys. The effective vacancy diffusion coefficient, D_V^eff, is the prime variable explored in this study. Variations in D_V^eff with composition and/or irradiation temperature are used along with the KWR nucleation theory to determine the subsequent effects of these variables on the void nucleation rate and the duration of the transient regime. The materials chosen for this study are nickel (Ni) and the Ni-Si, Fe-Ni-Cr and Fe-Ni-Cr-Si alloy systems.

The void nucleation rate is found to depend very strongly on the irradiation temperature and silicon content and to a lesser extent on the nickel and chromium contents. Radiation induced elemental segregation, total sink strength and the average bias factor ratio are also found to very strongly affect the absolute values of void nucleation rate, is the prime variable explored in this V study. Variations in Def£ with composition and/or irradiation temperature are used along with the KWR nucleation theory to determine the subsequent effects of these variables on the void nucleation rate and the duration of the transient regime. The materials chosen for this study are nickel (Ni) and the Ni-Si, Fe-Ni-Cr and Fe-Ni-Cr-Si alloy systems.

The void nucleation rate is found to depend very strongly on the irradiation temperature and silicon content and to a lesser extent on the nickel and chromium contents. Radiation induced elemental segregation, total sink strength and the average bias factor ratio are also found to very strongly affect the absolute values of void nucleation rate"-- Abstract, p. ii

Advisor(s)

Kumar, Aditya

Committee Member(s)

Tsoulfanidis, Nicholas
Culp, Archie W., Jr., 1931-2007

Department(s)

Nuclear Engineering and Radiation Science

Degree Name

M.S. in Nuclear Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 1984

Pagination

xi, 104 pages

Note about bibliography

Includes bibliographical references (pages 78-81)

Rights

© 1984 Bahram Esmailzadeh, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 5043

Print OCLC #

10992448

Recommended Citation

Esmailzadeh, Bahram, "The compositional and temperature dependence of radiation-induced void nucleation and swelling in austenitic alloys" (1984). Masters Theses. 189.
https://scholarsmine.mst.edu/masters_theses/189