高温时效对GH4169镍基高温合金性能的影响

郑建军, 张涛, 陈浩, 吕磊

Effect of High-temperature Aging on Microstructure and Mechanical Properties of GH4169 Nickel-based Superalloy

ZHENG Jianjun, ZHANG Tao, CHEN Hao, LV Lei

表3 在不同条件热处理后GH4169镍基高温合金的力学性能

Table 3 Mechanical properties of GH4169 nickel-based superalloy under different heat treatment conditions

Sample Mechanical property Hardness(HV) Yield strength / MPa Tensile strength / MPa Elongation after fracture / % Impact absorbed energy / J Standard heat treatment 497.44 ± 8.52 1330 ± 0 1385 ± 7.07 19.75 ± 1.06 58.17 ± 12.04 Aging treatment 500 h 270.21 ± 5.45 870 ± 17.67 932.5 ± 10.61 35.5 ± 0.70 46.83 ± 2.75 Aging treatment 1134 h 267.28 ± 3.96 840 ± 28.28 932.5 ± 14.14 34.5 ± 0.70 46.83 ± 3.54