高速引張加工された銅および銅合金の機械的性質

概要

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This investigation has been conducted to make clear the effect of strain rate on the internal structure and the mechanical properties of rapidly stretched copper and copper alloy. Though pitch copper, 7/3 brass and free cutting brass specimens have been used in this study. The main results obtained are as follows ; (1) The strain rate sensitivity of mechanical properties is recognized in annealed and prestretched specimens of though pitch copper, 7/3 brass and free cutting brass. Their yield strength, tensile strength and elongation increase with increment in their strain rate. (2) It is proved that the work of hardening has been more effectively made in the rapidly stretched tough pitch copper than in the statically stretched material. (3) Concerning 7/3 brass and free cutting brass, there is little difference in the effective work of hardening it between the case in the rapidly stretched specimen and that in the statically stretched one.
1969-07-15