中国科学院沈阳自动化研究所机构知识库
Advanced  
SIA OpenIR  > 空间自动化技术研究室  > 期刊论文
题名: Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy
作者: Zhang HJ(张会杰); Wang M(王敏); Zhang X(张骁); Yang GX(杨广新)
作者部门: 空间自动化技术研究室
关键词: Bobbin tool friction stir welding ; Aluminum alloy ; Welding speed ; Microstructural characteristic ; Mechanical property
刊名: MATERIALS & DESIGN
ISSN号: 0261-3069
出版日期: 2015
卷号: 65, 页码:559-566
收录类别: SCI ; EI
产权排序: 1
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.
语种: 英语
WOS记录号: WOS:000345520000070
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/15436
Appears in Collections:空间自动化技术研究室_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy.pdf(3888KB)期刊论文出版稿开放获取View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang HJ(张会杰)]'s Articles
[Wang M(王敏)]'s Articles
[Zhang X(张骁)]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang HJ(张会杰)]‘s Articles
[Wang M(王敏)]‘s Articles
[Zhang X(张骁)]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Microstructural characteristics and mechanical properties of bobbin tool friction stir welded 2A14-T6 aluminum alloy.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院沈阳自动化研究所 - Feedback
Powered by CSpace