Fatigue behavior effect of shot peening associated to plasma nitriding surface treatment in F138 stainless steel
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2023
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BRAZIL MRS MEETING, 21st
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Resumo
Analysis of shot peening associated to plasma nitriding surface layers on austenitic stainless
steel are conduced to verify the influence of the surface treatment in fatigue behavior. Shot
peening can be used to increase fatigue resistance, due to the surface residual stress
induced. Additionally, shot peening can be used as a previous plasma nitriding treatment to
improve nitrogen atoms diffusion, increasing the layer hardness, thickness and fatigue
resistance [1]. Thus, the aim of the present work is to study the effect of previous shot
peening surface treatment in plasma nitrided F138 stainless steel fatigue properties.
Specimens treated with plasma nitriding and shot peening associated to plasma nitriding
were analyzed in high cycle fatigue tests. Previous shot peening treatment to plasma
nitriding promoted a failure in lower strength values than reference specimens, and its
similar to plasma nitride specimens. The result can be associated to roughness increase due
to shot peening and plasma nitriding treatments, which can influence fatigue behavior as
other surficial morphological characteristics of the formed layer [2]. Fracture surface were
analyzed by scanning electron microscopy (SEM) and ductile fracture surface was observed
in all conditions. In higher load conditions cracks and microcraks were formed on the sides
of the specimen.
Como referenciar
OLIVEIRA, ELOANA P.R. de; VICENTE, JOSE G.; OLIVEIRA, RENE R. de; COUTO, ANTONIO A. Fatigue behavior effect of shot peening associated to plasma nitriding surface treatment in F138 stainless steel. In: BRAZIL MRS MEETING, 21st, October 1-5, 2023, Maceió, AL. Abstract... São Carlos, SP: Aptor Software, 2023. p. 418-418. Disponível em: http://repositorio.ipen.br/handle/123456789/34573. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.