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
), 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
), FENG Qiang1
图11. 镍基单晶高温合金980 ℃、250 MPa持久断裂后样品枝晶间区域2种典型的裂纹分布状态
(a) the cracks initiate from the interface of eutectic and matrix；(b) the cracks initiate from the interface of carbide and matrix
Fig.11. Microstructures around cracks in the interdendritic area from the longitudinal section of the fractured stress-rupture sample in the used nickel-based SX superalloy
