Constant Heat Input Friction Stir Welding of Variable Thickness AZ31 Sheets Through In-Process Tool Rotation Control

被引：10
作者：
Buffa, Gianluca [1 ]
Campanella, Davide [1 ]
Forcellese, Archimede [2 ]
Fratini, Livan [1 ]
Simoncini, Michela [3 ]
Barcellona, Antonio [1 ]
机构：
[1] Univ Palermo, Dept Engn, Viale Sci,Ed 8, I-90128 Palermo, Italy
[2] Univ Politecn Marche, Dept Ind Engn & Math Sci, Via Brecce Bianche 12, I-60131 Ancona, Italy
[3] Univ eCampus, Via Isimbardi 10, I-22060 Novedrate, CO, Italy
来源：
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME | 2019年 / 141卷 / 08期
关键词：
TAILOR-WELDED BLANKS; FORMABILITY; JOINTS; MICROSTRUCTURE;
D O I：
10.1115/1.4043838
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tailored blanks characterized by variable thickness were friction stir welded (FSWed) with the aim to obtain constant joint properties along the weld seam, regardless of the thickness change. To pursue this goal, the heat input was kept constant by in- process control of tool rotation. A dedicated numerical model of the process was used to determine the tool rotation values as a function of the sheet thickness. The mechanical properties and the microstructure of the FSWed joints, produced with varying process parameters, were studied. It was found that the proposed approach can produce joints with uniform properties along the weld line in terms of stress- strain curve shape, joint strength, elongation at failure, and microstructure.
引用
收藏
页数：9
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