Effects of Conventional Rolling and Differential Speed Rolling on Microstructure and Mechanical Properties of a Copper Alloy Sheet
동속압연과 이속압연이 동합금판재의 조직 및 기계적 성질에 미치는 영향

Seong-Hee Lee, Jung-Youn Lim, Dae-Jin Yoon, Kwang-Jun Euh, Seung-Zeon Han
2011 Korean Journal of Materials Research  
The effects of conventional rolling (CR) and differential speed rolling (DSR) on the microstructure and mechanical properties of a copper alloy sheet were investigated in detail. A copper alloy with thickness of 3 mm was rolled to a 50% reduction at ambient temperature without lubrication with a differential speed ratio of 2:1; sample was then annealed for 0.5h at various temperatures from 100 to 800 o C. Conventional rolling, in which the rolling speed of the upper and lower rolls is
more » ... was performed under the same rolling conditions. The shear strain introduced by the CR showed positive values at positions on the upper roll side and negative values at positions on the lower roll side. However, the shear strain showed a zero or positive value at all positions for the samples rolled by the DSR. The microstrucure and mechanical properties of the as-rolled copper alloy did not show very significant differences between the CR and DSR for the microstructure and mechanical properties. However, those properties showed very significant differences in the case of the annealed samples. The effects of rolling method on the microstructure and mechanical properties of the as-rolled and subsequently annealed materials are discussed in terms of the shear strain.
doi:10.3740/mrsk.2011.21.1.015 fatcat:qm3py2cxbnbh3j3osp3bx4odmq