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

图7 裂纹长度不同的三种成分合金试样450 ℃疲劳断口的微观形貌

Fig.7 Morphology of microscopic fracture of three alloys at 450 oC (a-c) 6+6 mm, (d-f) 6+12 mm, (g-i) 6+24 mm, (a, d, g)3Ta, (b, e, h) 3.5Ta, (c, f, i) 4Ta