Enhanced Mechanical Properties of Friction Stir Welded 5083A1-H19 Joints with Additional Water Cooling

3-mm-thick 5083Al-H19 roiled plates were friction stir welded （FSW） at tool rotation rates of 800 and200rpm with and without additional water cooling. With decreasing the rotation rate and applyingwater cooling, softening in the FSWjoint was significantly reduced. At a low rotation rate of 200 rpm w...

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Bibliographic Details
Published in:材料科学技术学报：英文版 2017, Vol.33 (9), p.1009-1014
Main Author: B.B. Wang F.F. Chen F. Liu W.G. Wang P. Xue Z.Y. Ma
Format: Article
Language:English
Subjects:
alloy
Aluminum
cooling
Friction
Mechanical
Microstructure
property
stir
Water
welding
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Summary:3-mm-thick 5083Al-H19 roiled plates were friction stir welded （FSW） at tool rotation rates of 800 and200rpm with and without additional water cooling. With decreasing the rotation rate and applyingwater cooling, softening in the FSWjoint was significantly reduced. At a low rotation rate of 200 rpm withadditional water cooling, almost no obvious softening was observed in the FSWjoint, and therefore a FSW5083AI-H19 joint with nearly equal strength to the base material （BM） was obtained. Furthermore, thegrains in the nugget zone were considerably refined with reducing the heat input and ultrafine equiaxedgrains of about 800 nm were obtained in the lowest heat input condition. This work provides an effectivemethod to achieve high property FSW joints of precipitate-hardened and work-hardened AI alloys.
ISSN:1005-0302
1941-1162