Studies on metallurgical and mechanical properties of laser welded dissimilar grade steels

Studies on metallurgical and mechanical properties of laser welded dissimilar grade steels Weldability of three steel combinations {ferritic (UNS G10800), austenitic (UNS G30400) and super duplex stainless steels (UNS S32760)} by pulsed 600 W Nd: Yag laser is presented. The study attempts to explore the effect of two different welding speeds (300 and 400 mm/min) on the nature of diverse weld zone morphology and joint strength of dissimilar welds. Microhardness at the top surface of the weld zone and heat affected zone (HAZ) is superior to middle and root section of welds. Tensile strength of the welds was higher at lower welding speed (300 mm/min) for all combinations and maximum tensile strength is obtained for SS 304-SDSS combination. Maximum and minimum corrosion rates are observed in ferritic steel and super duplex stainless steel, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Brazilian Society of Mechanical Sciences and Engineering Springer Journals

Studies on metallurgical and mechanical properties of laser welded dissimilar grade steels

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2016 by The Brazilian Society of Mechanical Sciences and Engineering
Subject
Engineering; Mechanical Engineering
ISSN
1678-5878
eISSN
1806-3691
D.O.I.
10.1007/s40430-016-0658-8
Publisher site
See Article on Publisher Site

Abstract

Weldability of three steel combinations {ferritic (UNS G10800), austenitic (UNS G30400) and super duplex stainless steels (UNS S32760)} by pulsed 600 W Nd: Yag laser is presented. The study attempts to explore the effect of two different welding speeds (300 and 400 mm/min) on the nature of diverse weld zone morphology and joint strength of dissimilar welds. Microhardness at the top surface of the weld zone and heat affected zone (HAZ) is superior to middle and root section of welds. Tensile strength of the welds was higher at lower welding speed (300 mm/min) for all combinations and maximum tensile strength is obtained for SS 304-SDSS combination. Maximum and minimum corrosion rates are observed in ferritic steel and super duplex stainless steel, respectively.

Journal

Journal of the Brazilian Society of Mechanical Sciences and EngineeringSpringer Journals

Published: Oct 25, 2016

References

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