Title of article :
Grain boundary engineering of 304 austenitic stainless steel
by laser surface melting and annealing
Author/Authors :
Sen Yang، نويسنده , , Zhan Jie Wang، نويسنده , , HIROYUKI KOKAWA، نويسنده , ,
Yutaka S. Sato، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2007
Abstract :
In order to improve the intergranular corrosion
resistance of 304 stainless steel, laser surface
remelting experiments were conducted using a 2 kW
continuous wave Nd: YAG laser. The grain boundary
character distribution (GBCD) and microstructures of
the materials were analyzed using EBSD, SEM and
OM. The experimental results showed that combination
of laser surface melting and annealing on 304
stainless steel resulted in a high frequency of twin
boundaries and consequent discontinuity of random
boundary network in the materials, which led to an
improvement of resistance to intergranular corrosion.
The maximum CSL density could reach 88.6% under
optimal processing conditions: 1220 K and 28 h.
Journal title :
Journal of Materials Science
Journal title :
Journal of Materials Science