The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

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

Report Number: WADC TR 53-181
Author: Blatherwick, A. A.
Author: Lazan, B. J.
Corporate Author: University Of Minnesota
Laboratory: Materials Laboratory
Date of Publication: 1953-08
Pages: 33
Contract: AF 33(038)-20840
Project: None Given
AD Number: AD0018117

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.

Download this report

(PDF, 1.02 MB, 33 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
The NTIS Order Number for this report is: AD018117
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
No digital image of an index entry indicating public availability is currently available
There has been no verification of an indication of public availability from an inside cover statement