Study on Laser-Assisted Rejuvenation of Inter-Granular Corrosion Damaged Type 304 Stainless Steel

The paper evaluates laser surface melting treatment for rejuvenation of inter-granular corrosion damaged type 304 stainless steel. Surface melting of inter-granular corrosion damaged specimens with CW CO 2 and pulsed Nd:YAG lasers was quite effective in sealing surface damage. However, inter-granula...

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Bibliographic Details
Published in:Lasers in manufacturing and materials processing 2015-09, Vol.2 (3), p.135-147
Main Authors: Gupta, R. K., Bhardwaj, V. K., Agrawal, D. K., Kumar, Manoj, Upadhyay, B. N., Sankar, P. Ram, Ganesh, P., Kaul, R., Oak, S. M., Kukreja, L. M.
Format: Article
Language:English
Subjects:
Engineering
Industrial and Production Engineering
Machines
Manufacturing
Processes
Surfaces and Interfaces
Thin Films
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Summary:The paper evaluates laser surface melting treatment for rejuvenation of inter-granular corrosion damaged type 304 stainless steel. Surface melting of inter-granular corrosion damaged specimens with CW CO 2 and pulsed Nd:YAG lasers was quite effective in sealing surface damage. However, inter-granular corrosion susceptibility of laser-rejuvenated surface was strongly influenced by associated thermal exposure. With respect to CW CO 2 laser, pulsed Nd:YAG laser-rejuvenated surface demonstrated significantly suppressed micro-structural damage and IGC-susceptibility. Compact pulsed Nd:YAG laser, with flexible beam transportation, presents an effective tool for in-situ rejuvenation of inter-granular corrosion damaged in-service stainless steel components operating in susceptible environments.
ISSN:2196-7229
2196-7237
DOI:10.1007/s40516-015-0011-6