通过毛坯预处理和可控应变等温模锻的方法,试制成盘中心部位具有高强度、高塑性、高低周疲劳性能(α+β等轴组织)而盘边缘部位具有高的高温蠕变抗力和断裂韧性,同时又有一定塑性(网篮状组织)的双重组织、双重性能的整体压气机盘.经组织检验及性能测试结果证明,运用该工艺制出的整体压气机盘性能优于组合式盘,且质量可靠、工艺简单.
The dual property TC11 Ti alloy compressor disk of 420 mm in diameter has been manufactured by the techniques of pretreatment and isothermal forging under controllable strain. The disk bore is of the equiaxed structure with high strength, ductility and low-cycle fatigue and the rim with basket-wave microstructure has high resistance to high temperature creep and high fracture toughness. This process is more simple and the production quality is more controllable as comparing with the conventional one. The properties of the bore and rim of the disk is satisfied over the specifications of conventional mechanical properties.Correspondent: YAO Zekun, associate professor, Faculty. No.402, (Northwestern Polytechnical University, Xi'an 710072)
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