Xuan Yanni, Li Jing, Gao Haitao, Yu Hailiang
School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China.
State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Light Alloys Research Institute, Central South University, Changsha 410083, China.
Materials (Basel). 2024 Aug 15;17(16):4065. doi: 10.3390/ma17164065.
This paper investigates the tensile properties and microstructures of Cu/Al clad sheets with an SUS304 interlayer after cryorolling and subsequent annealing and compares them with hot-rolled samples. The experimental results show that the inhibition of dynamic recovery by cryorolling enables the Cu/Al clad sheets to achieve a tensile strength of 302 MPa. After annealing, the tensile strength sharply drops to 159 MPa, while the elongation recovers to 29.0%. Compared with hot-rolled samples, the tensile strength of cryorolled samples is increased by 13.1% due to the effect of fine-grain strengthening. During the annealing process, the cryorolled samples exhibit improved elongation under a comparable strength with the hot-rolled samples, profiting from the higher degree of recrystallization and a higher proportion of annealing twins. The tensile properties of Cu/Al clad sheet with an SUS304 interlayer are strengthened by cryorolling and subsequent annealing, providing a new method for the fabrication of high-performance Cu/Al clad sheets.
本文研究了具有SUS304中间层的Cu/Al复合板在低温轧制及随后退火后的拉伸性能和微观结构，并将其与热轧样品进行比较。实验结果表明，低温轧制对动态回复的抑制作用使Cu/Al复合板的抗拉强度达到302MPa。退火后，抗拉强度急剧降至159MPa，而伸长率恢复到29.0%。与热轧样品相比，由于细晶强化作用，低温轧制样品的抗拉强度提高了13.1%。在退火过程中，低温轧制样品在与热轧样品强度相当的情况下伸长率有所提高，这得益于更高的再结晶程度和更高比例的退火孪晶。具有SUS304中间层的Cu/Al复合板的拉伸性能通过低温轧制和随后的退火得到强化，为高性能Cu/Al复合板的制备提供了一种新方法。
