Fatigue behavior of dissimilar friction stir welded T-lap joints between AA5083 and AA7075

被引：15

作者：

Hao Dinh Duong ^{[1
]}

Okazaki, Masakazu ^{[2
]}

Tra Hung Tran ^{[1
]}

机构：

[1] Nha Trang Univ, Dept Engn Mech, 02 Nguyen Dinh Chieu St, Nha Trang City, Vietnam

[2] Nagaoka Univ Technol, Dept Mech Engn, 1603-1 Kamitomioka Machi, Nagaoka, Niigata 9402188, Japan

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 145卷

关键词：

Friction stir welding; Dissimilar T-lap joint; Aluminum alloys; Kissing bonds; Fatigue behavior; CRACK-TIP PLASTICITY; KISSING-BOND; HIGH-CYCLE; ALUMINUM-ALLOYS; MICROSTRUCTURE; POROSITY; LIFE;

D O I：

10.1016/j.ijfatigue.2020.106090

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study clarified the fatigue failure behavior of Friction Stir Welded T-lap joints between AA7075-T651 and AA5083-H116. The results showed that the fatigue life of the T-lap joints was significantly depended on interface morphology. The geometry and orientation of kissing bonds (KBs) kept an important role in the fatigue failure behavior of the joints. The fatigue crack predominantly initiated at the weld toe under the skin-directional loading test. Regarding the stringer-directional loading test, however, the fatigue crack dominantly originated at the KBs. Furthermore, the role of the KBs geometry and orientation in enhancing stress intensity factors was simulated and discussed.

引用

页数：10

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