Abstract
Austenitic stainless steel AISI 316L grade base material
with butt joint thickness of 15 mm and different root gap
preparation was single pass welded using both laser-GMA
hybrid and laser cold-wire feeding process. The aim was
to be able to study the filler metal mixing in thick
section laser welding and the effect of processing
parameters on it. Particular interest was to examine how
homogenous filler metal mixing is across the whole weld
cross-section from the weld surface to the root portion.
Avesta 2205 duplex stainless steel filler wire was used
in order to produce an over-matched weld metal
composition differing from the base metal. Chromium was
used as a trace-element as its distribution and quantity
within the weld cross-section was identified using SEM
and EDS analysis. Moreover, micro- and macroscopic
metallography was carried out to examine emerged weld
microstructures and their features. In the technical
paper the effect of influencing parameters on the amount
and homogeneity of filler metal mixing such as root gap
preparation, wire feeding orientation (leading vs.
trailing) and welding process (hybrid vs. cold wire) are
compared and discussed.
Original language | English |
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Title of host publication | 32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO 2013 |
Place of Publication | Miami |
Publisher | Laser Institute of America |
Pages | 252-261 |
ISBN (Print) | 978-0-912035-98-7 |
DOIs | |
Publication status | Published - 2013 |
MoE publication type | A4 Article in a conference publication |
Event | 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013 - Miami, United States Duration: 6 Oct 2013 → 10 Oct 2013 Conference number: 32 |
Conference
Conference | 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013 |
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Country/Territory | United States |
City | Miami |
Period | 6/10/13 → 10/10/13 |
Keywords
- laser welding
- laser hybrid welding
- mixing
- homogeneity
- austenitic stainless steel