NOTCHED PROPERTIES OF HIGH-STRENGTH ALLOYS AT VARIOUS LOAD RATES AND TEMPERATURES.
ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS
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Tests were conducted to determine the notched and unnotched strengths of aluminum alloys 7001-T6 and 7075-T6, titanium alloy 6Al-6V-2Sn, uranium alloy 8Mo-0.5Ti, Rocoloy steels and 18 Ni maraging steel at load durations of 10 milliseconds to 5 minutes, and at temperatures from -320 F to 500 F. At room temperatures, as load duration was increased from 10 milliseconds to 5 minutes, the notched and unnotched tensile strengths of these materials were maintained within 10 percent, except that they increased approximately 30 percent for the notched aluminum alloys, and decreased 30 for the unnotched uranium alloy. The notched strength of Rocoloy steel is less than its unnotched strength over the entire test temperature range. Notched strengths of all the other alloys tested are less than their unnotched strengths in the lower test temperature range but exceed the unnotched strengths in the higher temperature range. Author
- Metallurgy and Metallography