Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy
文献类型：期刊论文
| 作者 | Zhang HJ(张会杰) ; Wang M(王敏); Zhang X(张骁); Yang GX(杨广新)
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| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2015 |
| 卷号 | 65页码:559-566 |
| 关键词 | Bobbin tool friction stir welding Aluminum alloy Welding speed Microstructural characteristic Mechanical property |
| ISSN号 | 0261-3069 |
| 产权排序 | 1 |
| 通讯作者 | 张会杰 |
| 中文摘要 | 2A14-T6 aluminum alloy was bobbin tool friction stir welded (BT-FSW) at various welding speeds. The microstructural analysis indicates that in the weld nugget the grains of the upper layer are smaller than those of the lower layer, which should be attributed to the larger extent of heat dissipation through the top shoulder. An ellipse-shaped region and a triangle-shaped region characterized by large elongated grain structures are found in the middle layer of the weld nugget of BT-FSW joints. The insufficient material plastic deformation caused by the flat feature of tool pin is believed to be the reason for the formation of the both regions. The insufficiently stirred regions can significantly affect the fracture features of joints during tensile test. At low welding speeds, the joints are all fractured along the border of the ellipse-shaped region. While at high welding speeds, the fracture path is just through the triangle-shaped region. With increasing welding speed, the joint strength is firstly increased to a peak and then shows a sharp decrease due to the occurrence of void defects. A maximum strength efficiency of 75% is achieved in this study. (C) 2014 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345520000070 |
| 公开日期 | 2014-12-29 |
| 源URL | [http://ir.sia.cn/handle/173321/15436]  |
| 专题 | 沈阳自动化研究所_空间自动化技术研究室 |
| 推荐引用方式 GB/T 7714 | Zhang HJ,Wang M,Zhang X,et al. Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy[J]. MATERIALS & DESIGN,2015,65:559-566. |
| APA | Zhang HJ,Wang M,Zhang X,&Yang GX.(2015).Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy.MATERIALS & DESIGN,65,559-566. |
| MLA | Zhang HJ,et al."Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy".MATERIALS & DESIGN 65(2015):559-566. |
入库方式： OAI收割
来源：沈阳自动化研究所
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