Ta含量对DZ411合金疲劳裂纹扩展的影响

吴望月, 刘心刚, 姜祥伟, 董加胜

Effect of Ta Content on Fatigue Crack Extension Behavior of DZ411 Alloy

WU Wangyue, LIU Xingang, JIANG Xiangwei, DONG Jiasheng

表2 不同Ta含量合金的γ′相含量、立方度以及碳化物含量

Table 2 γ′ phase content, cubicity and carbide content of alloys with different Ta contents

Alloy γ′ phase cubicity / % γ′ phase area fraction / % Carbide area fraction / % 3Ta 85.3 ± 1.3 43.3 ± 0.8 0.68 ± 0.07 3.5Ta 87.3 ± 1.0 44.9 ± 0.7 0.88 ± 0.11 4Ta 90.1 ± 0.9 46.9 ± 1.2 0.97 ± 0.14