镍基单晶高温合金冷热循环过程中圆孔周围裂纹萌生与扩展行为
王莉1(
),周忠娇1,张少华1sup,降向冬2,楼琅洪1,张健1
),周忠娇1,张少华1sup,降向冬2,楼琅洪1,张健1
CRACK INITIATION AND PROPAGATION AROUND HOLES OF Ni-BASED SINGLE CRYSTAL SUPERALLOY DURING THERMAL FATIGUE CYCLE
Li WANG1(),Zhongjiao ZHOU1,Shaohua ZHANG1,Xiangdong JIANG2,Langhong LOU1,Jian ZHANG1
),Zhongjiao ZHOU1,Shaohua ZHANG1,Xiangdong JIANG2,Langhong LOU1,Jian ZHANG1
图5. 不同平面样品打孔后以及分别经室温至1100 ℃热疲劳实验不同周次后圆孔周围组织形貌及裂纹扩展形貌
Fig.5. Morphologies of crack initiation and propagation around holes in (100) specimen (a, c, e) and (110) specimen (b, d, f) after thermal fatigue tests during room temperature to 1100 ℃ for 0 cyc (a, b), 80 cyc (c, d), 120 cyc (e, f) (Inset in Fig.5f shows the macro-morphology)
