On the fatigue crack growth behaviour of selective laser melting fabricated Inconel 625: Effects of build orientation and stress ratio

2020 ◽  
Vol 43 (4) ◽  
pp. 771-787 ◽  
Author(s):  
Xiaoan Hu ◽  
Zhiyuan Xue ◽  
TingTing Ren ◽  
Yun Jiang ◽  
ChengLi Dong ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Selective Laser Melting ◽  
Stress Ratio ◽  
Inconel 625 ◽  
Growth Behaviour ◽  
Laser Melting ◽  
Crack Growth Behaviour ◽  
Build Orientation

Temperature Effects on the Fatigue Behaviour of an Aluminium-Silicon Aloy

1984 ◽  
Vol 8 (3) ◽  
pp. 150-156 ◽  
Author(s):  
L.E. Culver ◽  
J.C. Balthazar ◽  
J.C. Radon
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Temperature Effects ◽  
Room Temperature ◽  
Stress Ratio ◽  
Fatigue Behaviour ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Stress Ratios

The fatigue behaviour of BS1490 LM-30 aluminium-silicon alloy has been investigated at room temperature and at a comparatively high temperature of 250°C. ASTM type compact specimens have been used to gather information about the fatigue crack growth behaviour in this cast aluminium alloy at 250°C and a comparison made with the results of simitar tests at 20°C. The effect of stress ratio was investigated and fatigue crack growth thresholds were established for the stress ratios R=0.08, 0.5 and -1.0. The overall appearance of all the fractured surfaces was brittle and fractographic observations showed that the silicon precipitate determines the mode of fracture in the investigated temperature range.

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.

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