一种低Re二代单晶高温合金长期时效后的性能

付芸迪, 申健, 黄亚奇, 卢玉章, 王栋

Microstructure-property Evolution in a Low-rhenium Second-generation Single Crystal Superalloy Following Long-term Aging

FU Yundi, SHEN Jian, Huang Yaqi, LU Yuzhang, WANG Dong

表4 DD26G合金热处理态和500 h、1000 h长期时效态持久测试后组织的拓扑反转程度

Table 4 Degree of topological inversion in γ/γ′ microstructures of DD26G alloy after stress rupture testing: fully heat-treated condition versus 500 h and 1000 h long-term aged condition

Alloy 0.5 mm 2 mm 6 mm heat-treated condition 3.25 2.95 2.66 500 h thermal exposure condition 4.3 3.92 3.42 1000 h thermal exposure condition 4.92 4.47 3.53