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RESEARCH PAPERS

Low-Cycle Corrosion Fatigue of Three Engineering Alloys in Salt Water

[+] Author and Article Information
H. Bernstein

Southwest Research Institute, San Antonio, Texas 78284

C. Loeby

University of Houston, Houston, Texas

J. Eng. Mater. Technol 110(3), 234-239 (Jul 01, 1988) (6 pages) doi:10.1115/1.3226042 History: Received April 06, 1987; Online September 15, 2009

Abstract

Low-cycle fatigue tests were conducted under strain control in salt water on 2024 aluminum, 304 stainless steel, and 1045 steel. All three materials showed a significant reduction in life due to corrosion fatigue in the low-cycle fatigue regime. The corrosion fatigue life of the aluminum and steel was time dependent, with significantly shorter lives at lower frequencies or at longer strain hold times. The corrosion fatigue life of the stainless steel was not time dependent for the conditions studied. Elastic and plastic strain-range versus life equations were modified by a frequency term to predict the corrosion fatigue life. This model correlated the fatigue data to within a factor of 1.28. A modification of this model correlated some corrosion fatigue data in the literature to within a factor of 1.19.

Copyright © 1988 by ASME
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