Effect of the welding profile generated by the modified indirect electric arc technique on the fatigue behavior of 6061-T6 aluminum alloy

R. R. Ambriz, G. Mesmacque, A. Ruiz, A. Amrouche, V. H. López

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This paper reports the effect of the welding profile generated by the modified indirect electric arc (MIEA) technique on the fatigue behavior of 6061-T6 welded joints. The calculations are based on the effect of the stress concentration factor produced by the characteristic geometry of the welding profile formed during the welding process. It was found that the fatigue life of welded samples using this welding technique was larger in comparison with data reported in the literature. Also, measurements of microhardness and tension testing were performed to account for the effect of different levels of fatigue damage on the mechanical properties of these welds. Experimental findings reveal that, with reference to undamaged samples, fatigue damage increases the microhardness in the weld metal and heat affected zone (HAZ) whereas it only produces a moderate increase in yield strength of approximately 14% for a 75% of fatigue damage. Tensile and fatigue tests indicate that the thermal affection undergone by the plates during fusion welding dictates failure in the HAZ under tension stress but not under fatigue. The failure mechanism under fatigue is discussed in terms of theoretical analyses and fractography. © 2009 Elsevier B.V. All rights reserved.
Original languageAmerican English
Pages (from-to)2057-2064
Number of pages1850
JournalMaterials Science and Engineering A
DOIs
StatePublished - 25 Mar 2010
Externally publishedYes

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Welding
electric arcs
Electric arcs
Aluminum
welding
aluminum alloys
Fatigue
Aluminum alloys
Fatigue of materials
Fatigue damage
heat affected zone
profiles
damage
Welds
microhardness
Heat affected zone
fusion welding
Microhardness
fractography
welded joints

Cite this

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Effect of the welding profile generated by the modified indirect electric arc technique on the fatigue behavior of 6061-T6 aluminum alloy. / Ambriz, R. R.; Mesmacque, G.; Ruiz, A.; Amrouche, A.; López, V. H.

In: Materials Science and Engineering A, 25.03.2010, p. 2057-2064.

Research output: Contribution to journalArticle

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