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Hydrogen transport and rationalization of porosity formation during welding of titanium alloys

Abstract:

The transport of hydrogen during fusion welding of the titanium alloy Ti-6Al4V is analyzed. A coupled thermodynamic/kinetic treatment is proposed for the mass transport within and around the weld pool. The modeling indicates that hydrogen accumulates in the weld pool as a consequence of the thermodynamic driving forces that arise; a region of hydrogen depletion exists in cooler, surrounding regions in the heat-affected zone and beyond. Coupling with a hydrogen diffusion-controlled bubble grow...

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Publisher copy:
10.1007/s11661-011-0867-9
Journal:
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science More from this journal
Volume:
43
Issue:
2
Pages:
582-591
Publication date:
2012-02-01
DOI:
EISSN:
1543-1940
ISSN:
1073-5623
Language:
English
Pubs id:
pubs:369678
UUID:
uuid:f8428dc0-4d4f-472b-81d5-0600112fb291
Local pid:
pubs:369678
Source identifiers:
369678
Deposit date:
2013-11-16

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