Accelerator Applications in a Nuclear Renaissance

Authors

Ajit K. Roy, University of Nevada, Las VegasFollow
Ramprashad Prabhakaran, University of Nevada, Las VegasFollow
Mohammad K. Hossain, University of Nevada, Las VegasFollow
Sudheer Sama, University of Nevada, Las VegasFollow
Brendan O'Toole, University of Nevada, Las VegasFollow

Document Type

Conference Proceeding

Publication Date

6-2003

First page number:

1

Last page number:

1

Abstract

Three martensitic candidate target materials, namely Alloys EP-823 and HT-9, and Type 422 stainless steel have been tested to evaluate their susceptibility to stress corrosion cracking (SCC), hydrogen embrittlement (HE) and localized corrosion (pitting and crevice) in aqueous solutions of different pH values at ambient and elevated temperatures. The SCC behavior of smooth and notched tensile specimens was evaluated by using both constant-load and slow-strain-rate (SSR) testing techniques. The susceptibility to localized corrosion was determined by cyclic potentiodynamic polarization (CPP) method. The extent and morphology of cracking were analyzed by scanning electron microscopy (SEM). The results of SSR testing indicate that the time-to-failure, the percent elongation and the percent reduction in area were significantly reduced in the 90^oC acidic solution. However, the magnitude of the true failure stress was increased in the presence of a notch due to a smaller area at the root of the notch. Constant-load SCC testing in the 90^oC acidic solution showed cracking within 30 days. SEM micrographs of all broken specimens revealed intergranular brittle failure at the primary fracture face. The results of CPP experiments are currently being analyzed, that will be presented along with the overall test data.

Keywords

Metals — Hydrogen embrittlement; Martensite – Stress corrosion; Steel alloys – Stress corrosion; Strains and stresses; Stress corrosion

Controlled Subject

Metals--Hydrogen embrittlement; Martensite; Steel alloys

Disciplines

Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Metallurgy | Oil, Gas, and Energy

Language

English

Permissions

Use Find in Your Library, contact the author, or use interlibrary loan to garner a copy of the article. Publisher copyright policy allows author to archive post-print (author’s final manuscript). When post-print is available or publisher policy changes, the article will be deposited

Repository Citation

Roy, A. K., Prabhakaran, R., Hossain, M. K., Sama, S., O'Toole, B. (2003). Accelerator Applications in a Nuclear Renaissance. 1-1.
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