Change in Modulus of Rigidity by Cold-Working and Subsequent Annealing
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概要
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The change in the modulus of rigidity due to cold-working and subsequent annealing was studied with electrolytic copper, silver, nickel, 70/30 brass and german silver wires. The rigidity was measured by the method of torsion pendulum, and the annealing temperature was raised at a constant rate of 1.7℃/min from room temperature to 400〜560℃ according as the kinds of metals. It was seen that the change due to cold-rolling varied with the kind of metal, whereas that due to cold-twisting was almost the same for all metals tested, and that the recovery of the rigidity due to annealing differed with the different metals and with different methods of cold-working. Accordingly, the mechanism of the recovery is complicated and may not be explained merely by the number and mobility of dislocations.
- 東北大学の論文