Effect Of Corrosion On The Fatigue Behavior Of 2024-T4 Aluminum Alloy

Item

Title
Effect Of Corrosion On The Fatigue Behavior Of 2024-T4 Aluminum Alloy
Description
An investigation was conducted to determine the effect of corrosion pitting on the fatigue behavior of 2024-T4 aluminum alloy and to establish a method of measuring pitting corrosion damage with respect to fatigue.

It was found that surface roughness measurements could be used to give a useful indication of the fatigue life that may be expected from a corroded structural member of 2024-T4 aluminum. The effect of pre-existing corrosion on the mechanism of fatigue was determined to be largely that of a stress raiser. In the case of pitting corrosion, calculations could be made, based upon critical pit measurements, to determine the stress concentration effect of the corrosion pit.
Date
1961
Index Abstract
Contrails and DTIC
Photo Quality
Incomplete
Report Number
ASD TR 61-121
Creator
Harmsworth, Clayton L.
Corporate Author
Directorate of Materials and Processes
Laboratory
Directorate of Materials and Processes
Extent
31
Identifier
AD0268569
AD0268569
Access Rights
OTS
Distribution Classification
1
Contract
Laboratory Research - No Contract
DoD Project
7381
DoD Task
73812
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Report Availability
Full text available by request
Date Issued
1961-07
Abstract
An investigation was conducted to determine the effect of corrosion pitting on the fatigue behavior of 2024-T4 aluminum alloy and to establish a method of measuring pitting corrosion damage with respect to fatigue.

It was found that surface roughness measurements could be used to give a useful indication of the fatigue life that may be expected from a corroded structural member of 2024-T4 aluminum. The effect of pre-existing corrosion on the mechanism of fatigue was determined to be largely that of a stress raiser. In the case of pitting corrosion, calculations could be made, based upon critical pit measurements, to determine the stress concentration effect of the corrosion pit.
Type
report
Provenance
Lockheed Martin Missiles & Fire Control
Format
vii, 31 pages : ill. ; 28 cm.
Subject
Corrosion
Aluminum Alloys
Stresses
Measurement
Tensile Properties
Test Methods
Surface Properties
Pickling
Publisher
Wright-Patterson Air Force Base, OH : Aeronautical Systems Division, Air Force Systems Command, United States Air Force
Distribution Conflict
No