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, 赵云松, 鲁凡, 张剑, 李龙飞, 冯强

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 Siliang, ZHAO Yunsong, LU Fan, ZHANG Jian, LI Longfei, FENG Qiang

表1 实验所涉及热处理制度

Table 1 Heat treatment processes used in this work

Specimen State Heat treatment process AC As-cast state - AS As-solid-solution state As-cast state+1290 ℃, 1 h+1300 ℃, 2 h+1315 ℃, 4 h, AC* ACH As-cast state+HIP As-cast state+1300 ℃, 30 MPa, 2 h+1300 ℃, 100 MPa, 3 h ASH As-solid-solution state+HIP As-solid-solution state+1300 ℃, 30 MPa, 2 h+1300 ℃, 100 MPa, 3 h SHT SHT As-solid-solution state+ageing treatment (1120 ℃, 4 h, AC*+870 ℃, 32 h, AC*) ACHS As-cast state+HIP+SHT* As-cast state+HIP+1315 ℃, 3 h, AC*+ageing treatment ASHS As-solid-solution state+HIP+SHT* As-solid-solution state+HIP+1315 ℃, 3 h, AC*+ageing treatment