| DOI | Resolve DOI: https://doi.org/10.2351/1.3554266 |
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| Author | Search for: Cao, X.1; Search for: Debaecker, G.; Search for: Poirier, E.1; Search for: Marya, S.; Search for: Cuddy, J.; Search for: Birur, A.; Search for: Wanjara, P.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Aerospace Research
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| Format | Text, Article |
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| Subject | Butt joints; Filler wire; Fully-penetrated; Fusion zones; Gap size; Joint gap; laser welding; Low underfill; ND : YAG lasers; Ti-6Al-4V alloy; Underfills; Welding defects; Weldments; Yttrium aluminum garnet laser; Alloys; Aluminum; Defects; Fillers; Hardness; Laser beam welding; Neodymium; Neodymium lasers; Porosity; Silicate minerals; Titanium; Welds; Wire; Yttrium; Titanium alloys |
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| Abstract | The effect of joint gap on the butt joint quality of Ti-6Al-4V alloy welded using a 4 kW Nd:yttrium aluminum garnet laser was evaluated in terms of the welding defects, microstructure, hardness, and tensile properties. The joint gap was proportionally filled using the filler wire with the compositions of the parent alloy. Fully penetrated welds without cracking were obtained up to a joint gap of 0.5 mm. The main defects observed in the welds were porosity and underfill. Specifically, the porosity area increased with increasing joint gap but remained less than 1% of the fusion zone area. Large underfill defects appeared in the weldments in the absence of a joint gap, but filler wire addition was observed to reduce this defect in the presence of a joint gap. The weld hardness decreased slightly with increasing joint gap, but the tensile properties were optimized at an intermediary gap size, probably due to the compromise between the low underfill (after the use of a filler wire) and a limited amount of porosity. © 2011 Laser Institute of America. |
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| Publication date | 2011 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21271574 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | de3ee460-dc26-4d03-99a8-d43f4e63b411 |
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| Record created | 2014-03-24 |
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| Record modified | 2020-04-21 |
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