Ta含量对高性能镍基粉末高温合金高温拉伸性能的影响

王志成,王浩,黄海亮,胡本芙

Effect of Ta on High Temperature Tensile Properties of Advanced Ni-based Powder Metallurgy Superalloys

Zhicheng WANG,Hao WANG,Hailiang HUANG,Benfu Hu

表2 热处理态不同Ta含量合金二次、三次γ′尺寸

Table 2 Secondary and tertiary γ' size of alloys with different Ta contents after heat treatement

Alloys 0%Ta 1.2%Ta 2.4%Ta 3.6%Ta 4.8%Ta Average size of γ′Ⅱ/nm 182 200 215 245 288 Average size of γ′Ⅲ/nm 55.6 48.0 47.6 48.4 53.2 Volume fraction of γ′Ⅲ /% 1.7 3.3 4.5 5.0 5.3