Deciphering the role of solidification cell structure in the hydrogen embrittlement of CoCrFeNi medium-entropy alloy fabricated by laser-powder bed fusion: Insights from annealing treatments
Jae Yeong Jung , Hyun Jung , Yun Hee An , Soo Yeol Lee , Yakai Zhao , Kwang Boon Lau , Pei Wang , Dong-Hyun Lee
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引用次数: 0
Abstract
The role of solidification cell structure in hydrogen embrittlement (HE) in laser-powder bed fusion fabricated CoCrFeNi medium-entropy alloy is investigated by comparing as-built and annealed conditions. Annealing at 1100 °C dissolves the cell structure and induces partial recrystallization. This slightly reduced the strength but significantly improves HE resistance by suppressing hydrogen-assisted intergranular cracking. The results are discussed in terms of the changes in hydrogen trapping/diffusion behavior and deformation behavior upon removal of cell structure, as investigated through thermal desorption spectroscopy, Ag decoration, and digital image correlation technique.
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.
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