Fatigue Properties Of Extruded Magnesium Alloy Zk 60 Under Various Combinations Of Alternating And Mean Axial Stresses

Item

Title
Fatigue Properties Of Extruded Magnesium Alloy Zk 60 Under Various Combinations Of Alternating And Mean Axial Stresses
Date
1953
Index Abstract
Coming Soon
Photo Quality
Complete
Report Number
WADC TR 53-181
Creator
Blatherwick, A. A.
Lazan, B. J.
Corporate Author
University Of Minnesota
Laboratory
Materials Laboratory
Extent
33
NTRL Accession Number
AD018117
Identifier
AD0018117
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
AFAL ltr
Distribution Change Action Date
7/31/2003
Abstract
Axial-stress fatigue tests were conducted on 1 unnotched and 2 notched types of extruded Mg alloy ZK60A-T5 under various conditions of mean and alternating axial stresses. The results are presented as stress-number-of-cycles (S-N) curves. The S-N curves for unnotched specimens were flat with an abrupt knee at 10 to the 5th power C; beyond this, the curves were almost horizontal, indicating a definite endurance level, although the effect was not so marked for mild-notched and sharp-notched specimens. The fatigue life of the Mg alloys was more sensitive to alternative than to means stress, particularly for notched specimens whose curves for 10 to the 5th power and 10 to the 7th power c were flat. The fatigue strength-reduction factor varied with the stress ratio and stress magnitude.
Report Availability
Full text available
Date Issued
1953-08
Provenance
IIT
Type
report
Format
1 online resource
Media
WADCTR53-181.pdf