α+β黄銅の熱間加工における組織変化

抄録

In this report, the changes of structure in α+β brass by hot-working temperature and working reduction were investigated using plate specimens of 58.5%Cu, 59.0%Cu, 60.0%Cu, 60.5%Cu, 61.0%Cu, 61.5%Cu and 61.9%Cu brass, of the size of 30 mm×90 mm×180 mm, and the structure after forging for various holding times using specimens of the same contents 1 cm³ in size. The results obtained were as follows: (1) There was a suitable temperature zone for producing homogenous structure in α+β brass. (2) There was a suitable holding time correlated with the hot-working temperature and the size of the specimen. (3) Within temperature zone of adapted for producing homogenous structure, it grew finer in the case of larger working reduction at the beginning.