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Title: Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel

Abstract

Friction stir scribe technology, a derivative of friction stir welding, was applied for the dissimilar lap welding of an aluminum alloy and galvanized mild steel sheets. During the process, the rotating tool with a cobalt steel scribe first penetrated the top material — aluminum — and then the scribe cut the bottom material — steel. The steel was displaced into the upper material to produce a characteristic hook feature. Lap welds were shear tested, and their fracture paths were studied. Welding parameters affected the welding features including hook height, which turned out to be highly related to fracture position. Therefore, in this paper, the relationships among welding parameters, hook height, joint strength and fracture position are presented. In addition, influence of zinc coating on joint strength was also studied. Keywords: friction stir scribe technology; dissimilar material welding; zinc coating; hook height; joint strength; fracture position

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [2];  [3]
  1. Center for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA
  2. Pacific Northwest National Laboratory, Energy Materials and Manufacturing, Richland, WA, USA
  3. General Motors Technical Center, Warren, MI, USA
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1422294
Report Number(s):
PNNL-SA-128815
Journal ID: ISSN 1362-1718; VT0505000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Science and Technology of Welding and Joining; Journal Volume: 23; Journal Issue: 3
Country of Publication:
United States
Language:
English
Subject:
Aluminum

Citation Formats

Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, and Carlson, Blair. Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel. United States: N. p., 2017. Web. doi:10.1080/13621718.2017.1381460.
Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, & Carlson, Blair. Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel. United States. doi:10.1080/13621718.2017.1381460.
Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, and Carlson, Blair. Wed . "Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel". United States. doi:10.1080/13621718.2017.1381460.
@article{osti_1422294,
title = {Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel},
author = {Wang, Tianhao and Sidhar, Harpreet and Mishra, Rajiv S. and Hovanski, Yuri and Upadhyay, Piyush and Carlson, Blair},
abstractNote = {Friction stir scribe technology, a derivative of friction stir welding, was applied for the dissimilar lap welding of an aluminum alloy and galvanized mild steel sheets. During the process, the rotating tool with a cobalt steel scribe first penetrated the top material — aluminum — and then the scribe cut the bottom material — steel. The steel was displaced into the upper material to produce a characteristic hook feature. Lap welds were shear tested, and their fracture paths were studied. Welding parameters affected the welding features including hook height, which turned out to be highly related to fracture position. Therefore, in this paper, the relationships among welding parameters, hook height, joint strength and fracture position are presented. In addition, influence of zinc coating on joint strength was also studied. Keywords: friction stir scribe technology; dissimilar material welding; zinc coating; hook height; joint strength; fracture position},
doi = {10.1080/13621718.2017.1381460},
journal = {Science and Technology of Welding and Joining},
number = 3,
volume = 23,
place = {United States},
year = {Wed Oct 04 00:00:00 EDT 2017},
month = {Wed Oct 04 00:00:00 EDT 2017}
}