Plastic deformation behavior of the friction stir welded AA2024 aluminum alloy

被引：11
作者：
Zhang, Peng [1 ]
Guo, Ning [1 ,2 ]
Chen, Gang [1 ]
Meng, Qiang [3 ]
Dong, Chunlin [3 ]
Zhou, Li [1 ,2 ]
Feng, Jicai [1 ,2 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[3] Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2014年 / 74卷 / 5-8期
基金：
中国国家自然科学基金;
关键词：
Friction stir welding; Plastic deformation; Finite element simulation; Surface banded texture; MATERIAL FLOW; MICROSTRUCTURE;
D O I：
10.1007/s00170-014-6031-0
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to study the effect of plastic deformation on the banded texture and flashes in friction stir welding process, a three-dimensional Lagrangian incremental finite element model was developed. The plastic deformation of friction stir welding and the forming and healing of transient keyhole during the welding process were studied visually by numerical simulation and validated by corresponding experiments. The simulation results were acceptably in good agreement with the experimental data. As shown in the numerical and experimental results, the flash of FSW joint which could be divided into two layers was mainly distributed on the retreating side. The forming and healing process of transient state keyhole includes outflow of weld materials from the beginning to 1/3 rotation period and backflow into the keyhole after 2/3 period. The distribution of plastic deformation was inhomogeneous upon the transverse cross-section, while the large deformation region was near the top surface and close to the advancing side.
引用
收藏
页码：673 / 679
页数：7
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