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The Effect of Temperature Cycling on the Physical Properties of FS-1 Magnesium Alloy Sheet Metal


Lindsley, Jack Nathan (1953) The Effect of Temperature Cycling on the Physical Properties of FS-1 Magnesium Alloy Sheet Metal. Engineer's thesis, California Institute of Technology. doi:10.7907/N1M2-JG59.


An investigation was made of the effect of different cyclic heat treatments on the "high rate" creep and stress-strain characteristics of FS-lh magnesium alloy and 75S-T6 aluminum alloy sheet metal. The heat treatments to which the alloys were subjected consisted of a varying series of heating and cooling cycles such that the periods at heat treating temperature totaled 60 minutes. Temperatures investigated were 250[degrees] and 550[degrees]F. Following heat treatment, both tensile and creep tests were conducted at room temperature and at the temperature of heat treatment. This thesis encompasses the investigation of FS-lh magnesium alloy, while the investigation of 75S-T6 aluminum alloy is covered in the current thesis of the author's co-worker(1). It was found for the range of heat treatment cycling (1-20 cycles) and temperatures investigated, that there is no effect on the physical properties as a result of changing the number of heating cycles. Cyclic heat treatment at 550[degrees]F was the only treatment to result in a reduction of physical properties, and this only when tested at room temperature. It was also found that, within the time range investigated, exposure time exhibits a negligible effect on the physical properties of the material. However, elevated temperatures affect the yield and ultimate properties.

Item Type:Thesis (Engineer's thesis)
Subject Keywords:Aeronautical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Sechler, Ernest Edwin
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1953
Record Number:CaltechETD:etd-04252003-081930
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1494
Deposited By: Imported from ETD-db
Deposited On:25 Apr 2003
Last Modified:25 May 2023 18:26

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PDF (Lindsley_jn_1953.pdf) - Final Version
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