Tolerances of joint gaps in Nd:YAG laser welded Ti-6Al-4V alloy with the addition of filler wire

Download
  1. Get@NRC: Tolerances of joint gaps in Nd:YAG laser welded Ti-6Al-4V alloy with the addition of filler wire (Opens in a new window)
DOIResolve DOI: http://doi.org/10.2351/1.3554266
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Laser Applications
ISSN1042-346X
Volume23
Issue1
Article number12004
SubjectButt 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
AbstractThe 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.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Aerospace Research
Peer reviewedYes
NPARC number21271574
Export citationExport as RIS
Report a correctionReport a correction
Record identifierde3ee460-dc26-4d03-99a8-d43f4e63b411
Record created2014-03-24
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: