Fatigue Properties Of Aluminum Alloys At Various Direct Stress Ratios, Part 2 - Extruded Alloys

Item

Title
Fatigue Properties Of Aluminum Alloys At Various Direct Stress Ratios, Part 2 - Extruded Alloys
Date
1952
Index Abstract
Online
Photo Quality
Complete
Report Number
WADC TR 52-307 Part 2
Creator
Lazan, B. J.
Blatherwick, A. A.
Corporate Author
Minnesota Univ Minneapolis Inst Of Tech
Laboratory
Materials Laboratory
Extent
34
PB Number
PB116165
NTRL Accession Number
AD008136
Identifier
AD0008136
AD Number
8136
Access Rights
Notice(s)
Distribution Classification
1
Contract
AF 33(038)-20840
DoD Project
None Given
DoD Task
None Given
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Distribution Conflict
No
Index Price
$5.25
Index In
U.S. Government Research Reports, vol. 23, no. 3, p.88, 3/18/1955
Abstract
The effects of axial stress fatigue tests on alloys 14S-T6, 24S -T4, and 75S-T6 were determined. Stress ratios of 0.15, 0.89, and infinity were applied in analyzing the effect of range of stress. The static ultimate strengths of these alloys were shown to be slightly higher than those of rolled materials. The static tensile strengths of notched extruded 14S-T6 and 75S-T6 alloys were about 10% higher than for unnotched specimens, while the tensile strenght of 24S-T4 was about the same under both conditions. The fatigue strengths of notched and unnotched specimens of 14S-T6 and 24S-T4 were slightly higher than those of rolled alloys at any life. The final conclusion was that the over-all fatigue behavior of extruded 14S-T6, 24S-T4, and 75S-T6 alloys may be considered the same as that of rolled alloys. Tabulated data are appended.
Report Availability
Full text available
Date Issued
1952-02
Provenance
IIT
Type
report
Format
1 online resource
Media
WADCTR52-307part02.pdf