晶粒细化对K417G高温合金蠕变性能的影响

都贝宁, 杨金侠, 崔传勇, 孙晓峰

EFFECTS OF GRAIN REFINEMENT ON CREEP PROPERTIES OF K417G SUPERALLOY

DU Beining, YANG Jinxia, CUI Chuanyong, SUN Xiaofeng

表1 K417G合金的平均晶粒尺寸及碳化物和y' 相的平均尺寸

Table 1 Average size of grains, carbides and y' phase of K417G superalloy

Specimen Grain size / mm Carbide / μm y' phase / nm A 2.500 4.4 750 B 1.700 4.4 670 C 0.430 3.7 650 D 0.075 3.3 580