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Title: Fatigue Performance of Thin Laser Butt Welds in HSLA Steel
Authors: Riofrío, Patricio G.
Antunes, Fernando 
Ferreira, José 
Batista, António Castanhola 
Capela, Carlos 
Keywords: fatigue strength; laser butt weld; HSLA steel; fatigue limit prediction
Issue Date: 2021
Project: UIDB/00285/2020 
Universidad de las Fuerzas Armadas-ESPE for the scholarship 
Orthopedia Medica Company 
Serial title, monograph or event: Metals
Volume: 11
Issue: 10
Abstract: This work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the S-N curves of four welded series. The results showed acceptable fatigue strength although the welded series presented multiple-imperfections. The analysis of fatigue behavior at low stress levels through the stress-concentrating effect explained the influence of each factor on the S-N curves of the welded series. The fatigue limits of the welded series predicted through the stress-concentrating effect and by the relationship proposed by Murakami showed good agreement with the experimental results. © 2021 by the authors.
ISSN: 2075-4701
DOI: 10.3390/met11101499
Rights: openAccess
Appears in Collections:I&D CFis - Artigos em Revistas Internacionais
I&D CEMMPRE - Artigos em Revistas Internacionais

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