Secular Change after Cold-Working and Anneal-Hardening of α Brass
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概要
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The secular change after cold-working and anneal-hardening of 70/30 brass was measured by the hardness and the spring test. An increase in hardness and a decrease in bending deflection were observed at room temperature after cold-working, especially in high reduction specimens. As in the previous work on 60/40 brass, the change after anneal-hardening of 70/30 brass was influenced by the length of time from final cold-rolling to heat-treatment, and by the heating time of anneal-hardening. In general, the longer the times, the less the change. Heat-treatment was carried out at 200℃ for 15 min〜3 hrs after the speciments had been allowed to remain at 40℃ for various durations following the final cold-rolling.
- 東北大学の論文
著者
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Izumi Osamu
The Research Institute For Iron Steel And Other Metals
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Yoshiki Tadatsugu
The Research Institute For Iron Steel And Other Metals
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