Ni对Co-Al-W基合金时效组织演变和γ′相溶解行为的影响*

薛飞, 米涛, 王美玲, 丁贤飞, 李相辉, 冯强

EFFECTS OF Ni ON MICROSTRUCTURAL EVOLUTION AND γ′ DISSOLUTION OF NOVEL Co-Al-W BASE ALLOYS

XUE Fei, MI Tao, WANG Meiling, DING Xianfei, LI Xianghui, FENG Qiang

表4 Co-Al-W基合金经900 ℃, 50 h 和300 h 热处理, 以及再经970~1030 ℃, 4 h 热处理后的γ′相形貌

Table 4 Morphology of γ′ precipitates in the Co-Al-W base alloys after heat treatment at 900 ℃ for 50 h and 300 h and 970~1030 ℃ for 4 h

Alloy A1 A2 B1 B2 B3 B4 15Ni Cuboidal Cuboidal Spherical Spherical No γ′ No γ′ 25Ni Nearly cuboidal Nearly cuboidal Spherical Spherical No γ′ No γ′ 35Ni Nearly spherical Nearly spherical Spherical Nearly cuboidal Nearly cuboidal No γ′ 45Ni Spherical Spherical Spherical Nearly cuboidal Cuboidal No γ′