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采用光学显微镜、扫描电镜和力学性能测试等设备研究了Ti 6 2 42S合金相变点以上 45℃ (即 10 5 0℃ )加热 ,变形量为 70 %空冷的锻造工艺 ,经双重退火处理 ,获得细小网篮状组织。这种组织与α+β两相区锻造下的等轴组织相比 ,不但具有良好的室温和高温力学性能 ,而且还提高了材料的高温持久、蠕变强度、冲击和断裂韧性。该合金的 β区锻造工艺 ,可以用于加工航空发动机压气机盘模锻件。
The forging process of Ti 6 2 42S alloy heated above 45 ℃ (ie 10 5 0 ℃) and deformation of 70% air cooling was studied by means of optical microscope, scanning electron microscopy and mechanical properties testing. After double annealing treatment, Small net basket organization. Compared with the equiaxed structure under the forging of α + β two-phase region, this kind of structure not only has good mechanical properties at room temperature and high temperature, but also improves the high temperature lasting property, creep strength, impact and fracture toughness of the material. The alloy β-zone forging process can be used for machining aero-engine compressor disk forgings.