热等静压对铸态及固溶态第二代镍基单晶高温合金显微缺陷及持久性能的影响
和思亮1, 赵云松2, 鲁凡1, 张剑2, 李龙飞1(), 冯强1
Effects of Hot Isostatic Pressure on Microdefects and Stress Rupture Life of Second-Generation Nickel-Based Single Crystal Superalloy in As-Cast and As-Solid-Solution States
HE Siliang1, ZHAO Yunsong2, LU Fan1, ZHANG Jian2, LI Longfei1(), FENG Qiang1

图7. 铸态及固溶态镍基单晶高温合金经过热等静压处理前后的枝晶偏析系数(ki)
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Fig.7. Dendrite segregation coefficients (ki) of alloy elements in the used nickel-based SX superalloy before and after HIP treatment, showing that ki were reduced obviously by solid-solution and HIP treatments, especially for alloy elements Re, W, Al, Nb and Ta