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INVESTIGATION OF THE EFFECTS OF RAPID LOADING AND ELEVATED TEMPERATURES ON THE MECHANICAL PROPERTIES OF COMPRESSIVE AND COLUMN MEMBERS
MARQUARDT CORP VAN NUYS CALIF
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Short time tensile and compressive properties were evaluated for Rene 41 and Haynes 25 sheet alloys at room temperature and 800 to 2200 F. Tests conducted at various strain rates 0.00001 to 0.1 in.in.sec produced significant differences in strength, particularly at elevated temperatures. Creep properties, both tensile and compressive, were determined for the same alloys at temperatures of 1600 to 2200 F and times up to 15 minutes. At the higher stress levels, creep rates became very rapid and considerable amounts of plastic strain occurred in times of 1 sec or less. A preliminary study was conducted on the use of programmed, forced strain rate tests to predict short time creep properties. Author
APPROVED FOR PUBLIC RELEASE