Low cycle fatigue property and fracture behavior of low yield point steels

2018 ◽  
Vol 165 ◽  
pp. 688-696 ◽  
Author(s):  
Lu Yang ◽  
Yang Gao ◽  
Gang Shi ◽  
Xun Wang ◽  
Yu Bai
Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1089
Author(s):  
Wei Li ◽  
Lei Yang ◽  
Cong Li ◽  
Huitao Chen ◽  
Lu Zuo ◽  
...  

The microstructure, low-cycle fatigue property, and fracture behavior of as-received and aluminized steel were investigated at room temperature, respectively. The results reveal that the aluminized layer is mainly composed of three layers: (I) the external Al2O3 layer, (II) the transition Fe-Al mesophase layer, and (III) the diffusion layer with AlFe and AlCrFe phase. The microhardness of as-received steel lower than that of aluminized steel until the distance from aluminized layer is greater than 150 μm. Compared to the original steel, the aluminized steel exhibits lower stress amplitude and fatigue life, which is correlated to the surface integrity. According to the Coffin-Manson relationship, the fatigue-ductility coefficients for as-received and aluminized steel is 4.347 and 3.528, respectively. Fractographic analysis reveals that the fatigue cracks tend to nucleate at the coating and propagate through the grain boundaries apace.


2018 ◽  
Vol 2018.93 (0) ◽  
pp. 220
Author(s):  
Tomoya MINAMI ◽  
Kenji UMEDA ◽  
Yoshihisa KANEKO ◽  
Makoto UCHIDA ◽  
Alexei VINOGRADV

2016 ◽  
Vol 668 ◽  
pp. 30-37 ◽  
Author(s):  
M. Kermajani ◽  
F. Malek Ghaini ◽  
R. Miresmaeili ◽  
A.A. Aghakouchak ◽  
M. Shadmand

2017 ◽  
Vol 2017 (0) ◽  
pp. OS1503
Author(s):  
Tomoya MINAMI ◽  
Yoshihisa KANEKO ◽  
Makoto UCHIDA ◽  
Alexei VINOGRADOV

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