Microstructural characteristics and creep rupture behavior of electron beam and laser welded AISI 316L stainless steel

S. C. Tjong, S. M. Zhu, N. J. Ho, J. S. Ku

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24 Citations (Scopus)

Abstract

AISI 316L stainless steel was welded by the electron beam (EB) and laser techniques. Microstructural characteristics, hardness profile, creep rupture properties and creep damage of the welds were investigated. Fully austenitic microstructure was obtained in the two welds. The solidification structure of the welds consisted of the cellular and equiaxed dendrites. The creep rupture lives of the two welds were almost the same, and they were reduced by a factor of about two compared to the base metal. Moreover, the rupture elongation of the welds was lower than that of the base metal. Creep damage was observed in the "parting" region of the welds and in the heat-affected zone (HAZ), respectively. Final creep fracture occurred in the "parting" region of the welds.

Original languageEnglish
Pages (from-to)24-31
Number of pages8
JournalJournal of Nuclear Materials
Volume227
Issue number1-2
DOIs
Publication statusPublished - 1 Jan 1995
Externally publishedYes

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