Modeling of Delayed Hydride Crack Initiation

[+] Author and Article Information
A. F. Shalabi, D. A. Meneley

Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada

J. Eng. Mater. Technol 113(4), 443-448 (Oct 01, 1991) (6 pages) doi:10.1115/1.2904124 History: Received April 01, 1990; Revised February 10, 1991; Online April 29, 2008


This paper presents a solution to the one-dimensional time (transient condition) and temperature dependent diffusion problem adjacent to a crack-tip/flaw within the plastic zone region. The solution is used in addressing the problem of delayed hydride crack initiation in zirconium-2.5 wt. percent niobium. The mathematical solution predicts the critical hydride length at a given stress level and temperature for crack initiation.

Copyright © 1991 by The American Society of Mechanical Engineers
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