Corrosion fatigue crack propagation behavior of A7N01P‐T4 aluminum alloy welded joints from high‐speed train underframe after 1.8 million km operation

Using the potentiodynamic polarization analysis, the fatigue crack propagation behavior of A7N01P‐T4 aluminum alloy metal inert gas welded joints cut from a high‐speed train underframe after 1.8 million km operation was studied in air and in a 3.5 wt% NaCl solution. The fracture surface and crack gr...

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Veröffentlicht in:	Materials and corrosion 2021-05, Vol.72 (5), p.879-887
Hauptverfasser:	Lu, Wei, Ma, Chuanping, Gou, Guoqing, Fu, Zhenghong, Sun, Weiguang, Che, Xiaoli, Chen, Hui, Gao, Wei
Format:	Artikel
Sprache:	eng
Schlagworte:	1.8 million km operation A7N01P‐T4 aluminum alloy welded joints Aluminum alloys Aluminum base alloys Anodic dissolution Base metal Corrosion Corrosion fatigue Corrosion rate Corrosion resistance Crack propagation Dissolution Electron backscatter diffraction Fatigue cracks Fatigue failure Fracture mechanics Fracture surfaces Gas welding Heat affected zone Metal fatigue Microscopy Optical microscopy Plastic deformation Propagation Rare gases Sodium chloride Stress corrosion cracking Weld metal Welded joints
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