CAJ | 학술논문

研究了采用Zn-3Al钎料钎焊Al/Cu异质金属时，钎焊温度对接头冶金反应行为及性能的影响。结果表明，在400℃超声钎焊时，接头的钎缝层由不均匀分布的α-Al和CuZn5树枝状晶以及Zn-Al共晶基体组成，接头的Cu界面处形成了较厚的扇贝状CuZn5金属间化合物层和Cu基扩散层。增加钎焊温度到440℃时，接头的钎缝层转变为由均匀弥散分布的CuZn5、α-Al和Al4.2Cu3.2Zn0.7相组成，接头Cu界面处的金属间化合物层则由CuZn5相转变为锯齿状的Al4.2Cu3.2Zn0.7相。进一步增加钎焊温度至480℃引起了接头显微组织的粗化和钎缝层中缩孔的形成。性能测试表明，与在400℃和480℃超声钎焊相比，在440℃超声钎焊获得的Cu/Al接头有着最佳的拉伸强度值（78.9 MPa）和抗腐蚀性。
연구료채용Zn-3Al천료천한Al/Cu이질금속시，천한온도대접두야금반응행위급성능적영향。결과표명，재400℃초성천한시，접두적천봉층유불균균분포적α-Al화CuZn5수지상정이급Zn-Al공정기체조성，접두적Cu계면처형성료교후적선패상CuZn5금속간화합물층화Cu기확산층。증가천한온도도440℃시，접두적천봉층전변위유균균미산분포적CuZn5、α-Al화Al4.2Cu3.2Zn0.7상조성，접두Cu계면처적금속간화합물층칙유CuZn5상전변위거치상적Al4.2Cu3.2Zn0.7상。진일보증가천한온도지480℃인기료접두현미조직적조화화천봉층중축공적형성。성능측시표명，여재400℃화480℃초성천한상비，재440℃초성천한획득적Cu/Al접두유착최가적랍신강도치（78.9 MPa）화항부식성。
The metallurgic reaction behavior and properties of Al/Zn-3Al/Cu dissimilar joints ultrasonically brazed at different temperatures were investigated. Results showed that, in the joint brazed at 400℃, the ifller metal layer was composed of Zn-Al eutectic matrix and randomly distributedα-Al and CuZn5 dendrites, the Cu interfacial layer was composed of thick CuZn5 intermetallic compounds layer and Cu based diffusion layer. Increasing the brazing temperature to 440℃, however, the ifller metal layer was composed of refined and dispersed CuZn5,α-Al and Al4.2Cu3.2Zn0.7 phases, and the CuZn5 layer on the Cu surface changed to a serrated Al4.2Cu3.2Zn0.7 intermetallic compounds layer. Further increase the brazing temperature to 480℃ resulted in the coarsening of the microstructure and the creation of cavities in the ifller metal layer. Properties tests showed that, compared with the joints brazed at 400℃ and 480℃, the joint brazed at 440℃ had the highest tensile strength (78.9 MPa) and corrosion resistance.