Dynamic Behavior of Metals Under Tensile Impact. Part II: Annealed and Cold Worked Materials.

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Report Number: AFML TR 69-76 Part II
Author(s): Schultz, Albert B.
Corporate Author(s): University of Illinois at Chicago Circle, Department Of Materials Engineering
Laboratory: Air Force Materials Laboratory
Date of Publication: 1969-06
Pages: 46
Contract: F33615-67-C-1283
DoD Project: 7351 - Metallic Materials
DoD Task: 735106 - Behavior of Metals
Identifier: AD0857984

Abstract:
The mechanical behavior of metals subjected to uniaxial tensile impact at room temperature is reported. Tests were conducted on 1100 aluminum subjected to light and to heavy, cold working; 2024 aluminum after annealing and after light and heavy cold working; C1010 steel in these same three conditions; and OFHC copper and 70-30 brass in an annealed state. In five of the ten series the materials were found to possess dynamic stress-strain curves which fell below the static curves. The yield point of the steel was lowered by impact loading. Ratios of dynamic to static ultimate stress were found to range from 0.59 to 1.3.

Provenance: Lockheed Martin Missiles & Fire Control

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