Fatigue crack growth behaviour in Ti6Al4V alloy specimens produced by selective laser melting

2019 ◽  
Author(s):  
J. S. Jesus ◽  
L. P. Borrego ◽  
J. A. M. Ferreira ◽  
J. D. Costa ◽  
C. Capela
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Selective Laser Melting ◽  
Ti6al4v Alloy ◽  
Growth Behaviour ◽  
Laser Melting ◽  
Crack Growth Behaviour

Fatigue crack growth behaviour in laser melting deposited Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy

2017 ◽  
Vol 690 ◽  
pp. 378-386 ◽  
Author(s):  
Songsong Lu ◽  
Rui Bao ◽  
Kai Wang ◽  
Dong Liu ◽  
Yanzeng Wu ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Behaviour ◽  
Laser Melting ◽  
Crack Growth Behaviour

Study on Fatigue Crack Growth of Laser Melting Deposited 12CrNi2 Alloy Steel Based on XFEM

2021 ◽  
Vol 871 ◽  
pp. 46-52
Author(s):  
Cheng Hong Duan ◽  
Zhi Wei Weng ◽  
Xiang Peng Luo ◽  
Xiang Xiang Han ◽  
Ming Huang Zhao
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Life ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Alloy Steel ◽  
Initial Crack ◽  
Growth Behaviour ◽  
Laser Melting ◽  
Crack Growth Behaviour

Based on the Paris model of fatigue crack growth theory, the fatigue crack growth behaviour of Center Crack Tension (CCT) specimens of laser melting deposited 12CrNi2 alloy steel is studied by extended finite element method (XFEM). The crack growth rules and fatigue life are analyzed by experiment and finite element simulation. The experimental results are in good agreement with the finite element results, which verifies the accuracy of XFEM method to simulate the fatigue crack growth behaviour of laser melting deposited 12CrNi2 alloy steel components. Based on this, the effects of initial crack direction and load amplitude on fatigue crack growth behaviour are discussed. The results indicate that even if the initial crack direction is different, the crack will finally propagate in a direction perpendicular to the load. With the increase of the load amplitude, the fatigue life of the specimen with initial crack decreases exponentially.

Sign in / Sign up

Export Citation Format

Share Document