日本金属学会誌

J. Japan Inst. Metals, Vol. 21, No. 11 (1957),
pp. 632-636

Research on the Structure of Cold-rolled Brass (2nd Report). Structures Cold-rolled and Low-temperature Annealed

Osamu Izumi


Abstract:

The structure changes by cold-rolling and low-temperature annealing of 70/30 brass were investigated by a microscope and X-ray photography. The difference in ready-to-finish grain size affects the development degree of the rolling structure. A coarse-grained material tends to delay the development, compared with a fine-grained one. The tendency is thought to be connected with the hardness change by low-temperature annealing as previously reported. No remarkable change of structure is observed by annealing at 150°, while a kind of polygonization is recognized at 250°. Though the nuclation by recrystallization develops preferentially at the regions strained severely,grain growth was observed along the slip lines at 350°. The difference in grain size affects the recrystallization process in its velocity.


(Received 1957/5/25)

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