冷坩埚定向凝固Ti-47Al-2Cr-2Nb合金的拉伸与高周疲劳性能研究*
丁宏升(
),尚子博,王永喆,陈瑞润,郭景杰,傅恒志
),尚子博,王永喆,陈瑞润,郭景杰,傅恒志
TENSILE AND HIGH CYCLE FATIGUE PROPERTIES OF Ti-47Al-2Cr-2Nb DIRECTIONALLY SOLIDIFIED BY COLD CRUCIBLE METHOD
Hongsheng DING(),Zibo SHANG,Yongzhe WANG,Ruirun CHEN,Jingjie GUO,Hengzhi FU
),Zibo SHANG,Yongzhe WANG,Ruirun CHEN,Jingjie GUO,Hengzhi FU
图8. 抽拉速率为1.2 mm/min时定向凝固Ti-47Al-2Cr-2Nb合金的高温(800 ℃)拉伸断口形貌
Fig.8. Fracture morphologies of directionally solidfied Ti-47Al-2Cr-2Nb under withdrawal rate of 1.2 mm/min at 800 ℃ showing fracure behaviors of lamellar cracking (a), lamellar tearing (b), fracture step of lamellae (c) and dimple (d)
