Study on formation,microstructure and properties of weldin friction stir welding for ZL102 aluminum alloy plate

WEN Yu; JIN Yuhua

doi:10.7512/j.issn.1001-2303.2020.12.04

Views : 0 下载量: 689 CSCD: 0

PDF
Export
Share
Collection
Album

Study on formation,microstructure and properties of weldin friction stir welding for ZL102 aluminum alloy plate
Vol. 50, Issue 12, Pages: 14-17(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.12.04
稿件说明：

移动端阅览

DOI：

WEN Yu, JIN Yuhua. Study on formation,microstructure and properties of weldin friction stir welding for ZL102 aluminum alloy plate[J]. Eletric Welding Machine2020, 50(12): 14-17. DOI： 10.7512/j.issn.1001-2303.2020.12.04.

摘要

采用搅拌摩擦焊对15 mm厚ZL102铝合金进行焊接

观察焊缝成形并分析接头微观组织和力学性能。结果表明:在文中试验条件下

旋转速度900 r/min、焊接速度50 mm/min时可获得成形良好的焊缝;焊核区组织晶粒相对母材发生显著细化

为细小的等轴晶组织;焊接接头显微硬度在横截面方向呈非中心对称分布

最高值位于偏离焊缝中心的前进侧焊核区

在板厚方向显微硬度呈逐渐下降趋势

轴肩作用区硬度最大

底部最低。

Abstract

Friction stir welding process is used to weld ZL102 aluminum alloy with the thickness of 15 mm.The formation of weld is observed and the microstructure and properties of the joints are analyzed.The results show that under this experimental condition

the weld is well formed at the rotating speed of 900 r/min andwelding speed of 50 mm/min.The microstructure grain in the nugget zone is finer than that in the base metal

which is fine equiaxed grain.The microhardness of welded joint asymmetrically distributes along the weld center

and the maximum microhardness is in the weld nugget zone on forward side deviating from the weld center.And the microhardnessin the plate thickness direction gradually declines

which means the hardness of shoulder function zone is maximum and that of bottom is minimum.