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新型高性能结构对钛合金、钢过渡连接接头用钛-钢爆炸复合板复合界面的结合性能和致密性的要求越来越高。本文对过渡连接用钛-钢复合板结合界面附近的微观组织、显微硬度及变形特征等分析的结果表明,TA2-Q345界面漩涡区金属的流动状态不同导致形成不同的漩涡形态,金属流动不畅时,漩涡区易于形成缩松类空洞等缺陷,并夹杂有Fe Ti、Fe2Ti等脆性化合物和富余的铁元素,以及大量氧化物;距离结合界面越近,塑性变形越剧烈,波峰处的变形要大于波谷,钢侧变形程度大于钛侧;钢侧漩涡区的硬度最高,波峰处次之,波谷处最小。
The new high-performance structure of titanium-steel, steel transition joints with titanium - steel composite interface of explosive composite board bonding performance and tightness requirements are getting higher and higher. The results of microstructures, microhardness and deformation characteristics near the interface of the titanium-steel composite plate for the transitional connection show that the different flow states of the metal in the swirl zone of the TA2-Q345 interface lead to different vortex patterns, and the metal flow is not When smooth, the swirl zone tends to form defects such as shrinkage cavities and is surrounded by brittle compounds such as Fe Ti, Fe2Ti and extra iron, as well as a large amount of oxide. The closer to the bonding interface, the more severe the plastic deformation and the deformation at the crest To be greater than the trough, the deformation of the steel side is greater than the titanium side; the steel side of the vortex area the highest hardness, the second peak, trough the smallest.