Next Article in Journal
Advances on the Failure Analysis of the Dam—Foundation Interface of Concrete Dams
Next Article in Special Issue
Prediction Surface Morphology of Nanostructure Fabricated by Nano-Oxidation Technology
Previous Article in Journal
Elastic Properties and Enhanced Piezoelectric Response at Morphotropic Phase Boundaries
Previous Article in Special Issue
Origin of the Electroluminescence from Annealed-ZnO/GaN Heterojunction Light-Emitting Diodes
Article Menu

Export Article

Open AccessArticle
Materials 2015, 8(12), 8246-8254; doi:10.3390/ma8125444

An Investigation of the Microstructure of an Intermetallic Layer in Welding Aluminum Alloys to Steel by MIG Process

Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, 415 Chien-Kung Road, Sanmin District, Kaohsiung 80778, Taiwan, ROC
*
Author to whom correspondence should be addressed.
Academic Editor: Teen-Hang Meen
Received: 27 August 2015 / Revised: 8 November 2015 / Accepted: 17 November 2015 / Published: 2 December 2015
(This article belongs to the Special Issue Selected Papers from ICASI 2015)
View Full-Text   |   Download PDF [4645 KB, uploaded 2 December 2015]   |  

Abstract

Butt joints of A5052 aluminum alloy and SS400 steel, with a new type of chamfered edge, are welded by means of metal inert gas welding and ER4043 Al-Si filler metal. The microhardness and microstructure of the joint are investigated. An intermetallic layer is found on the surface of the welding seam and SS400 steel sheet. The hardness of the intermetallic layer is examined using the Vickers hardness test. The average hardness values at the Intermetallic (IMC) layer zone and without the IMC layer zone were higher than that of the welding wire ER4043. The tensile strength test showed a fracture at the intermetallic layer when the tensile strength is 225.9 MPa. The tensile value test indicated the average of welds was equivalent to the 85% tensile strength of the A5052 aluminum alloy. The thickness of the intermetallic layers is non-uniform at different positions with the ranges from 1.95 to 5 μm. The quality of the butt joint is better if the intermetallic layer is minimized. The Si crystals which appeared at the welding seam, indicating that this element participated actively during the welding process, also contributed to the IMC layer’s formation. View Full-Text
Keywords: dissimilar welding; A5052 alloy; SS400 steel; ER4043; intermetallic; butt-joint dissimilar welding; A5052 alloy; SS400 steel; ER4043; intermetallic; butt-joint
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Nguyen, Q.M.; Huang, S.-C. An Investigation of the Microstructure of an Intermetallic Layer in Welding Aluminum Alloys to Steel by MIG Process. Materials 2015, 8, 8246-8254.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top