热工艺对一种镍基单晶高温合金蠕变性能的影响

胡彭钦, 王栋, 卢玉章, 张健

Effect of Thermal Processes on Creep Properties of a Nickel-based Single Crystal Superalloy

HU Pengqin, WANG Dong, LU Yuzhang, ZHANG Jian

图3 经过不同热工艺后的样品在760 ℃/790 MPa条件下的蠕变拉断和中断纵截面组织

Fig.3 γ/γ′ microstructure evolution in the longitudinal sections of creep specimens treated by different thermal processes. Tests interrupted at different stages under condition of 760 ℃/790 MPa (a~c) HIP; (d~f) coating thermal process; (g~i) brazing thermal process; (a, d, g) 2 h; (b, e, h) 15 h; (c, f, i) fracture sample