(湖南大学 材料科学与工程学院，长沙 410082)
摘 要: 采用弯曲实验、金相和扫描电子显微镜，研究轧制温度、变形量对钢/铝复合板热轧复合的结合强度、界面和厚比分配的影响。结果表明：在轧制温度低于400 ℃时，弯曲次数随着预热温度的升高而增加，之后又逐渐减少；轧制温度在400 ℃时钢/铝复合板结合界面的结合强度最大；随着轧制温度的升高，铝层的压下量增加，钢层的压下量减小，致使两者压下量的差值增加；总的压下量越大，弯曲次数越多，结合界面和结合强度越好；当总压下量为20%~30%时，弯曲次数随压下量的增加而缓慢增加；当总压下量＞30%时，弯曲次数随压下量的增加而快速增加；随着总压下量的增加，钢和铝的压下量成正比关系增加，变化趋势相同，组元压下量的差值随总压下量的增加而减小，变形量趋于一致。
关键字: 钢/铝复合板；热轧复合；结合强度
（College of Materials Science and Engineering, Hunan University, Changsha 410082, China）
Abstract: The effects of rolling temperature and reductions on the bonding strength, interface and distribution of thickness ratio of the steel/aluminum metal-laminate materials, which were prepared by hot-rolling process, were studied by using bending tests and metallographic microscopy and scanning electron microscopy. The results indicate that the number of bending increases with increasing rolling temperatures below 400 ℃, whereas decreases after that. The maximum bond strength is obtained at 400 ℃. With increasing the rolling temperature, the rolling reduction of the aluminum layer increases while the steel layer decreases. At a given total rolling reduction, this leads the difference of reduction between aluminum and steel layer increasing. The number of bending and the bond strength increase with increasing the total rolling reduction. The increment of the number of bending is quite small when the total rolling reduction is ranged from 20% to 30%, but extremely large when the total rolling reduction exceeds 30%. The rolling reductions of both layers increase in direct proportion with the total rolling reduction, and the difference between them gradually diminishes and even towards a leveling.
Key words: steel/aluminum metal-laminate material; hot roll bonding; bond strength
