TY - JOUR
T1 - Microstructure based cracking behavior and life assessment of titanium alloy under very-high-cycle fatigue with elevated temperatures
AU - Li, Cheng
AU - Li, Wei
AU - Cai, Liang
AU - Zhang, Yucheng
AU - Sun, Rui
AU - Li, Xiaolong
AU - Imran Lashari, Muhammad
AU - Hamid, Usama
AU - Ding, Xiaoming
AU - Wang, Ping
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/8
Y1 - 2022/8
N2 - High and very high cycle fatigue tests for TC11 titanium alloy were performed to clarify the interior cracking behavior under fully reversed and pulsating tension at three service temperatures. According to the estimation of threshold values for small and long crack growth, the fatigue design curves are established. Combined with electron backscatter diffraction and fracture mechanics analysis, the interior cracking is closely related to grain strength and size, and microtexture. The interior failure is attributed to the facet formation caused by larger αp phase fracture. Based on FIP model, a temperature-based method is proposed to predict the crack nucleation life.
AB - High and very high cycle fatigue tests for TC11 titanium alloy were performed to clarify the interior cracking behavior under fully reversed and pulsating tension at three service temperatures. According to the estimation of threshold values for small and long crack growth, the fatigue design curves are established. Combined with electron backscatter diffraction and fracture mechanics analysis, the interior cracking is closely related to grain strength and size, and microtexture. The interior failure is attributed to the facet formation caused by larger αp phase fracture. Based on FIP model, a temperature-based method is proposed to predict the crack nucleation life.
KW - Elevated temperature
KW - Failure mechanism
KW - Life prediction
KW - Very high cycle fatigue
KW - α+β type titanium alloy
UR - http://www.scopus.com/inward/record.url?scp=85128508916&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2022.106914
DO - 10.1016/j.ijfatigue.2022.106914
M3 - Article
AN - SCOPUS:85128508916
SN - 0142-1123
VL - 161
JO - International Journal of Fatigue
JF - International Journal of Fatigue
M1 - 106914
ER -