Title of article
Microstructural, compositional and residual stress evaluation of CO2 laser welded superaustenitic AISI 904L stainless steel
Author/Authors
Zambon، نويسنده , , A. and Ferro، نويسنده , , P. and Bonollo، نويسنده , , F.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
11
From page
117
To page
127
Abstract
CO2 laser welding was performed on AISI 904L superaustenitic stainless steel sheets, with optimised processing parameters determined by means of melt run trial evaluations.
diffraction phase identification and light microscopy confirmed that the weld structure is fully austenitic and dendritic. A hardness increase in the weld bead with respect to the parent metal occurred and was related to both the microstructural refinement induced by a rapid cooling of the fusion zone and the presence of nanometric scale precipitates observed by TEM in the weld bead.
al stresses were determined by means of X-ray diffraction, exhibiting tensile stresses, close to the yield strength, in the longitudinal direction in the weld bead, while the stresses were compressive in the transverse direction and in the base material.
e tests showed that welded specimens retained strength and ductility values comparable to those of the base material.
Keywords
tensile strength , Residual stress , AISI 904L , Laser welding , Superaustenitic stainless steels
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2006
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2149756
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