りん青銅板に於ける低温焼鈍効果
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概要
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The mechanical properties of copper-alloy sheets that were cold-rolled and then given low temperature anneal show anomalies, especially with respect to bending plasticity; phosphor bronze sheets are among the typical examples. In the present work effect of low temperature (10-350℃) annealing on cold-rolled sheets of phosphor bronze was studied by means of bending plasticity measurement and hardness measurement. The Vickers hardness number versus annealing temperature curve (annealing time=const=1 hour) show at least four maxima; the maximum that occurs just prior to recrystallization is probably related with polygonization, the two maxima that precede the above-mentioned maximum are related with the precipitation hardening, and the maximum that occurs at or near the room temperature is the most difficult to interpret, and is possibly related with the re-arrangement of internal stress. Details of the bending plasticity measurement are described.
- 宇宙航空研究開発機構の論文
- 1956-03-30