A comparative investigation of the electrochemical behavior of as-printed 17-4 PH stainless steel produced by L-PBF and L-DED

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-02-21 DOI:10.1016/j.corsci.2025.112780

Luiz Carlos Rezende Coelho , Alice Paris , Patrícia Hatsue Suegama , Dany Michell Andrade Centeno , Hélio Goldenstein , Hercílio Gomes de Melo

引用次数: 0

Abstract

This study compares the corrosion resistance, in the as-printed condition, of 17–4 PH stainless steel samples produced by laser-powder bed fusion (L-PBF) and laser-directed energy deposition (L-DED). To highlight the role of the production procedure, samples with low defect levels were obtained from powders with similar compositions. Microstructural characterization showed ferritic-martensitic microstructure for L-DED and ferritic for L-PBF. The distorted martensitic lattice revealed by EBSD analysis results in a microstructure with higher stored energy and lower corrosion resistance for the L-DED-produced samples. After the onset of pitting corrosion, samples do not repassivate due to Cu deposition at the pit bottom.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.