The formation mechanism of the bonding between compound cast Al/Ti bimetal during a heat treatment regime was investigated. Commercially pure Al was cast and melt on a Ti bar in a steel tube, followed by heat treatment on the compound cast Ti/Al bimetal for different periods of time once the Al melt was solidified. No bonding was observed between the two metals after the initial casting, which can be attributed to the presence of oxide films on the liquid Al and solid Ti alloys and the trapped atmosphere between them. The effect of these layers in preventing the formation of bonding was eliminated after heat treating the cast part at ∼973 K (∼700°C) for at least 15 min, and the metals started to bond with each other. A detailed description of this bonding mechanism is presented in this paper.

研究了复合铸造Al / Ti双金属在热处理过程中结合的形成机理。将商业上纯净的Al铸造并在钢管的Ti棒上熔化，然后在Al熔化物凝固后在复合铸造的Ti / Al双金属上进行不同时间的热处理。初始铸造后，未在两种金属之间观察到键合，这可归因于液态Al和固态Ti合金上存在氧化膜，以及它们之间的捕集气氛。在〜973 K（〜700°C）热处理铸件至少15分钟后，消除了这些层在防止粘结形成方面的作用，并且金属开始相互粘结。本文介绍了这种绑定机制的详细说明。