Journal of Materials Engineering

Inhomogeneity and fatigue properties of ultra-wide 7B50-T7751 aluminum alloy thick plate

Yue LEI, Min HAO, Gaohong CHEN, Linna YI, Jinxin ZANG

Journal of Materials Engineering, 2023, 51(11): 103-110. DOI: 10.11868/j.issn.1001-4381.2022.000525

Material	R	Paris formula	Fitting formula	Determination coefficient，r ²
7B50-T7751	0.06	da/dN=C（ΔK） ⁿ	da/dN=6.168×10^-9（ΔK）^3.909	0.98235
7050-T7451	0.06	da/dN=C（ΔK） ⁿ	da/dN=8.916×10^-9（ΔK）^4.007	0.98269

Table 4 Fitting parameters of fatigue crack growth rate

Other figure/table from this article

Table 1 Information of experimental materials
Fig.1 Sampling diagram at different positions of ultra-wide 7B50-T7751 plate
Fig.2 Mechanical properties at different positions and orientations of ultra-wide 7B50-T7751 plate （a）tensile properties；（b）compressive properties；（c）fracture toughness
Fig.3 EBSD microstructures at different positions of ultra-wide 7B50-T7751 plate （a）W/2，T/4；（b）edge，T/4；（c）W/2，T/2；（d）edge，T/2；（e）inverse pole figure of ［001］
Table 2 Microstructure statistics at different positions of ultra-wide 7B50-T7751
Fig.4 ODF diagrams at different width positions of ultra-wide 7B50-T7751 plate （a）W/2，T/2；（b）edge，T/2
Fig.5 LT orientation fatigue S-N curves of the plates
Table 3 Fatigue limit at N=10⁷
Fig.6 T-L anti-fatigue crack growth rate performance of the plates