通过高温合金液氧顶盖细晶铸造工艺研究,在合金液浇注前的降温阶段给合金液施加一定的交变磁场,使得合金熔液可以达到较大的过冷度并保持良好的流动性,最终铸造出来的高温合金铸件组织为分布于整个铸造截面区域内的均匀细等轴晶组织,拉伸强度达到锻件的90%。 Through the research of the fine-grained casting process of the high-temperature alloy liquid-oxygen cap, a certain alternating magnetic field is applied to the alloy liquid during the cooling stage before the alloy liquid is poured, so that the alloy melt can achieve a greater degree of undercooling and maintain good fluidity, The final foundry superalloy casting has a uniform fine equiaxed grain structure distributed throughout the casting cross-sectional area and has a tensile strength of 90% of the forging.