Corrosion-fatigue behavior of welded aluminum alloy 2024-T3

被引：19
作者：
Yadav, V. K. [1 ]
Gaur, V. [1 ]
Singh, I. V. [1 ]
机构：
[1] Ind Engn Indian Inst Technol Roorkee, Fracture & Fatigue Lab, Dept Mech & Ind Engn, Roorkee 247667, Uttaranchal, India
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 173卷
关键词：
Corrosion-fatigue; Damage; Precipitate; Microstructure; Aluminum alloy; HEAT-TREATMENT; MECHANICAL-PROPERTIES; RESIDUAL-STRESS; CRACK GROWTH; FRICTION; MICROSTRUCTURE; METALS;
D O I：
10.1016/j.ijfatigue.2023.107675
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Corrosion-fatigue behavior of friction stir welded AA2024-T3 is investigated in a 3.5% NaCl solution. Corrosion-damage analysis of the tested specimens shows that the heat-affected zone of the shoulder-affected region is more sensitive to corrosion attack than stir zone due to coarsened microstructure. A mechanism has been proposed for the evolution of microstructure in the shoulder-affected zone. A significant decrease in the welded component's fatigue life is obtained in 3.5% NaCl solution as compared to laboratory air. The reduction in the fatigue life in a corrosive environment is devoted to the pit formation due to the dissolution of Al-matrix near intermetallic particles.
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页数：19
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