The Effect of Grain Size and Amount of β Phase on the Properties of Back-Torsion Working in 60/40 Brass
It was limited to 60/40 brass and the adjustment of grain size was performed, thereafter, it was processed by one way torsion working and back-torsion working. The effect of both workings on the work hardening and the surface roughness of 60/40 brass were investigated. The quenched material has excellent surface roughness in comparison with the furnace-cooled material both after and before workings. It seemed that a little difference in their grain size (15-55μm) affects the restoration ratio of surface roughness. For the back-torsion worked material, as the grain size is coarse, the amount of hardening increases. If the β phase ratio is more, it is easy to become hardened. Inversely, if the β phase ratio is less, it obtains the maximum amount of hardening.
T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran
J. Matsumoto et al., "The Effect of Grain Size and Amount of β Phase on the Properties of Back-Torsion Working in 60/40 Brass", Advanced Materials Research, Vols. 15-17, pp. 661-666, 2007