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The effect of temperature cycling on the physical properties of FS-1 magnesium alloy sheet metal

Citation

Lindsley, Jack N. (1953) The effect of temperature cycling on the physical properties of FS-1 magnesium alloy sheet metal. Engineer's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-04252003-081930

Abstract

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)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1953
Record Number:CaltechETD:etd-04252003-081930
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-04252003-081930
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1494
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:25 Apr 2003
Last Modified:26 Dec 2012 02:38

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