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通过热模拟压缩试验研究了变形温度和变形速率对GH2674合金组织和性能影响,试验温度范围为950～1200℃,应变速率为0.01、0.05、0.1和1.0s-1,变形量为65%;同时采用有限元法模拟分析了GH2674合金大型涡轮盘的成形过程,创造性的提出局部成形的方法,并对局部成形过程中应变场及载荷分布情况进行分析,从而确定了GH2674合金大型盘件合适的热成形工艺,并生产出了符合标准要求的直径达φ2200mm的GH2674合金大型涡轮盘锻件。
The effects of deformation temperature and deformation rate on the microstructure and properties of GH2674 alloy were investigated by thermal simulation compression test. The experimental temperature range was 950-1200 ℃, the strain rate was 0.01, 0.05, 0.1 and 1.0 s-1, and the deformation was 65% The finite element method was used to simulate the forming process of GH2674 alloy large-scale turbine disk, the creative method of local forming was proposed, and the strain field and load distribution in the process of local forming were analyzed. The suitable heat of GH2674 alloy large- Forming process, and to produce a diameter of φ2200mm meet the standard requirements GH2674 alloy large turbine disk forgings.