Fatigue life prediction of in-situ TiB2/2024 aluminum matrix composite

被引：19
作者：
Liu, Ke [1 ]
Li, Yazhi [1 ]
Duan, Min-ge [1 ]
Zhang, Teng [2 ]
Li, Chen [1 ]
Li, Biao [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China
[2] Air Force Engn Univ, Aeronaut & Astronaut Engn Coll, Xian 710038, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 145卷
关键词：
Aluminum matrix composite; Fatigue test; Elastic-plastic constitutive model; Damage accumulation; Fatigue life; AL-BASED COMPOSITES; LOW-CYCLE; BEHAVIOR; DAMAGE; TIB2; PROPAGATION; PARTICLES; AL2O3;
D O I：
10.1016/j.ijfatigue.2020.106128
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fatigue performances of an in-situ TiB2 particle reinforced 2024-T4 alloy matrix composite (TiB2/2024Al) and 2024-T4 aluminum alloy (2024Al) were investigated. Stress- and strain-controlled fatigue experiments were conducted to obtain the fatigue lives. High-cycle fatigue performance was experimentally studied under different stress concentration levels. The results showed that the addition of in-situ particles enhances the fatigue resistance. A fatigue life prediction method was developed based on a damage-coupled Chaboche elastic-plastic constitutive model. Fatigue life predictions were performed using the established method and compared with the experiments. It was observed that the proposed method achieves fatigue life predictions with satisfactory accuracy.
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页数：16
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