CAJ | 학술논문

采用浸镀的方法在纯铝基体上浸镀镍基镀层，然后在450~550°C温度范围内用扩散复合的方法制备Al/Cu双金属材料。用扫描电子显微镜(SEM)和X射线衍射仪(XRD)分别对Al/Cu结合体的界面显微组织以及断裂表面进行表征。用拉伸剪切测试及显微硬度测试对Al/Cu双金属材料的力学性能进行测量。结果表明，Ni中间层可以有效地消除Al-Cu金属间化合物的形成。Al/Ni界面由Al3Ni 和Al3Ni2两相组成，而在Ni/Cu界面处则是Ni-Cu固溶体。Ni中间层的加入提高了复层材料的拉伸剪切强度。在500°C制备的添加Ni中间层的试样表现出最大的拉伸剪切值，为34.7 MPa。
채용침도적방법재순려기체상침도얼기도층，연후재450~550°C온도범위내용확산복합적방법제비Al/Cu쌍금속재료。용소묘전자현미경(SEM)화X사선연사의(XRD)분별대Al/Cu결합체적계면현미조직이급단렬표면진행표정。용랍신전절측시급현미경도측시대Al/Cu쌍금속재료적역학성능진행측량。결과표명，Ni중간층가이유효지소제Al-Cu금속간화합물적형성。Al/Ni계면유Al3Ni 화Al3Ni2량상조성，이재Ni/Cu계면처칙시Ni-Cu고용체。Ni중간층적가입제고료복층재료적랍신전절강도。재500°C제비적첨가Ni중간층적시양표현출최대적랍신전절치，위34.7 MPa。
A nickel-based coating was deposited on the pure Al substrate by immersion plating, and the Al/Cu bimetals were prepared by diffusion bonding in the temperature range of 450-550 °C. The interface microstructure and fracture surface of Al/Cu joints were studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The mechanical properties of the Al/Cu bimetals were measured by tensile shear and microhardness tests. The results show that the Ni interlayer can effectively eliminate the formation of Al-Cu intermetallic compounds. The Al/Ni interface consists of the Al3Ni and Al3Ni2 phases, while it is Ni-Cu solid solution at the Ni/Cu interface. The tensile shear strength of the joints is improved by the addition of Ni interlayer. The joint with Ni interlayer annealed at 500 °C exhibits a maximum value of tensile shear strength of 34.7 MPa.