Insight into nitriding behavior and corrosion mechanism in 17-4PH steel: The influence of nanocrystalline structure

Dan Liu; Daoxin Liu; Yinghao Wu; Jing Yang; Xingchen Xu; Mengyao Li; Shaolong Li; Amin Ma; Yilong Liang

Journal of Materials Research and Technology (Nov 2023)

Insight into nitriding behavior and corrosion mechanism in 17-4PH steel: The influence of nanocrystalline structure

Dan Liu,
Daoxin Liu,
Yinghao Wu,
Jing Yang,
Xingchen Xu,
Mengyao Li,
Shaolong Li,
Amin Ma,
Yilong Liang

Affiliations

Dan Liu: National & Local Joint Engineering Laboratory for High-Performance Metal Structure Materials and Advanced Manufacturing Technology, Guizhou University, Guiyang, 550025, China; College of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China; Corresponding author. National & Local Joint Engineering Laboratory for High-Performance Metal Structure Materials and Advanced Manufacturing Technology, Guizhou University, Guiyang, 550025, China.
Daoxin Liu: College of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China; Corresponding author.
Yinghao Wu: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
Jing Yang: College of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China
Xingchen Xu: Highway School, Chang'an University, Xi'an, 710064, China
Mengyao Li: College of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China
Shaolong Li: National & Local Joint Engineering Laboratory for High-Performance Metal Structure Materials and Advanced Manufacturing Technology, Guizhou University, Guiyang, 550025, China
Amin Ma: College of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China
Yilong Liang: National & Local Joint Engineering Laboratory for High-Performance Metal Structure Materials and Advanced Manufacturing Technology, Guizhou University, Guiyang, 550025, China

Journal volume & issue: Vol. 27
pp. 3761 – 3776

Abstract

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In this study, the influence of nanocrystalline structure on the plasma nitriding (PN) behavior of 17-4PH steel and corresponding corrosion mechanisms under different treatments were systematically investigated. The results showed that nanocrystalline structures introduced by ultrasonic surface rolling process (USRP) would affect the nitrides morphology, composition and distribution via accelerating element diffusion. The fabricated nanocrystalline structures could enhance the corrosion resistance of original and plasma-nitrided 17-4PH steel, which was attributed to its various microstructures. Homogeneous microstructures suppressed or alleviated the formation of micro-galvanic couple in USRP-treated 17-4PH steel and USRP-15 + PN specimen.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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