Estimation of embrittlement during aging of AISI 316 stainless steel TIG welds

Weldments of AISI grade 316 stainless steel, having a ferrite content of 4-6% and a variety of nitrogen concentrations were prepared using a modified element implant technique. Charpy impact specimens prepared from these weldments were subjected to a variety of aging treatments. Impact toughness dec...

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Bibliographic Details
Published in:Bulletin of materials science 2004-12, Vol.27 (6), p.511-515
Main Authors: Nayak, J., Udupa, K. R., Hebbar, K. R., Nayak, H. V. S.
Format: Article
Language:English
Subjects:
Aging
Aging (metallurgy)
Austenitic stainless steels
Embrittlement
Ferrite
Impact strength
Implants
Joining
Metallurgy
Nitrogen
Stainless steels
Toughness
Weldments
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Summary:Weldments of AISI grade 316 stainless steel, having a ferrite content of 4-6% and a variety of nitrogen concentrations were prepared using a modified element implant technique. Charpy impact specimens prepared from these weldments were subjected to a variety of aging treatments. Impact toughness decreases with aging time at all aging temperatures. Nitrogen is found to be beneficial to toughness. An empirical relation connecting the aging temperature, aging time and nitrogen content with toughness has been developed which can be used to estimate the time for embrittlement.
ISSN:0250-4707
0973-7669
DOI:10.1007/BF02707278