Tensile behavior of commercially pure copper sheet fabricated by 2-and 3-layered accumulative roll bonding (ARB) process

The tensile properties of two- and three-layered accumulative roll-bonding (ARB) processed copper sheets containing deoxidized low-phosphorous copper (DLP) and PMC90 are investigated with varying numbers of ARB process cycles. The tensile strength of the DLP is determined by the applied equivalent strain, showing that the tensile strength values for both 2-L and 3-L ARBed DLP specimens follow a single trend line. Unlike the DLP, the 3-L ARBed PMC90 follows a trend line that is completely different compared to that of its 2-L counterpart above an equivalent strain value of 7.6, suggesting that the amount of applied equivalent strain alone does not control the tensile strength of PMC90. The mechanism determining the tensile behavior of 2-L and 3-L ARB processed commercially pure copper sheets is discussed.