Effects of Base Metal Preheating on the Microstructure, Mechanical Properties, and Corrosion Resistance of UNS S32750 SDSS Pulsed Nd:YAG Laser Welding-Reference-Cited by-同舟云学术

Effects of Base Metal Preheating on the Microstructure, Mechanical Properties, and Corrosion Resistance of UNS S32750 SDSS Pulsed Nd:YAG Laser Welding

Published:2023-11-11 Issue:11 Volume:13 Page:1930
ISSN:2079-6412
Container-title:Coatings
language:en
Short-container-title:Coatings

Author:

da Cruz Junior Eli J.¹^ORCID,Varasquim Francisco M. F. A.¹^ORCID,Crespo Gillian S.²^ORCID,Ventrella Vicente. A.²^ORCID,Zambon Andrea³^ORCID,Calliari Irene³

Affiliation:

1. São Paulo Federal Institute of Education, Science and Technology, Campus Itapetininga, Itapetininga 18202-000, Brazil

2. Mechanical Engineering Department, Campus of Ilha Solteira, UNESP, São Paulo State University, Ilha Solteira 15385-000, Brazil

3. Department of Industrial Engineering, University of Padua, 35122 Padova, Italy

Abstract

Super duplex stainless steel has a microstructure consisting of equal proportions of austenite and ferrite. However, welding with Nd:YAG pulsed laser results in an imbalanced microstructure that compromises the steel’s properties. This paper studied the effects of preheating the base metal on pulsed Nd:YAG laser welding. Four conditions were evaluated (no preheating and heating at 100 °C, 200 °C, and 300 °C). The analysis included studying the microstructure, microhardness, and corrosion resistance. Preheating the base metals was found to be an effective method for increasing the volume fractions of austenite. The preheated samples showed an improvement in corrosion resistance compared to the untreated sample. The microhardness varied, with the ferrite amount being higher in the untreated sample.

Publisher

MDPI AG

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces

Link

https://www.mdpi.com/2079-6412/13/11/1930/pdf

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