Electrochemical dissolution behavior of heat treated laser solid formed Inconel718

Yufeng Zhang; Xin Lin; Jun Yu; Pengfei Guo; Jiaqiang Li; Tuo Qin; Jianrui Liu; Weidong Huang

doi:10.1016/j.corsci.2020.108750

Electrochemical dissolution behavior of heat treated laser solid formed Inconel718

Yufeng Zhang, Xin Lin, Jun Yu, Pengfei Guo, Jiaqiang Li, Tuo Qin, Jianrui Liu, Weidong Huang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Microstructure characteristic and its effects on electrochemical dissolution behavior of horizontal plane (HP) and vertical plane (VP) in the laser solid formed (LSF) Inconel718 alloy after double aging (DA) heat treatment (DA-LSF Inconel718) were investigated. Compared to the as-deposited one, DA-LSF Inconel718 shows more phases and presents electrochemical anisotropy between HP and VP including the polarization curves, current efficiency curves and surface roughness. It is caused by different electrochemical dissolution processes on HP and VP and proved that surface energy has no obvious effect. Three models were proposed to illustrate electrochemical dissolution behavior, surface formation mechanism and electrochemical anisotropy, respectively.

Original language	English
Article number	108750
Journal	Corrosion Science
Volume	173
DOIs	https://doi.org/10.1016/j.corsci.2020.108750
State	Published - 15 Aug 2020

Keywords

Additive manufacturing (AM)
Anodic dissolution
Laser solid forming (LSF)
Polarization
SEM
Superalloys

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10.1016/j.corsci.2020.108750

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title = "Electrochemical dissolution behavior of heat treated laser solid formed Inconel718",

abstract = "Microstructure characteristic and its effects on electrochemical dissolution behavior of horizontal plane (HP) and vertical plane (VP) in the laser solid formed (LSF) Inconel718 alloy after double aging (DA) heat treatment (DA-LSF Inconel718) were investigated. Compared to the as-deposited one, DA-LSF Inconel718 shows more phases and presents electrochemical anisotropy between HP and VP including the polarization curves, current efficiency curves and surface roughness. It is caused by different electrochemical dissolution processes on HP and VP and proved that surface energy has no obvious effect. Three models were proposed to illustrate electrochemical dissolution behavior, surface formation mechanism and electrochemical anisotropy, respectively.",

keywords = "Additive manufacturing (AM), Anodic dissolution, Laser solid forming (LSF), Polarization, SEM, Superalloys",

author = "Yufeng Zhang and Xin Lin and Jun Yu and Pengfei Guo and Jiaqiang Li and Tuo Qin and Jianrui Liu and Weidong Huang",

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doi = "10.1016/j.corsci.2020.108750",

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TY - JOUR

T1 - Electrochemical dissolution behavior of heat treated laser solid formed Inconel718

AU - Zhang, Yufeng

AU - Lin, Xin

AU - Yu, Jun

AU - Guo, Pengfei

AU - Li, Jiaqiang

AU - Qin, Tuo

AU - Liu, Jianrui

AU - Huang, Weidong

PY - 2020/8/15

Y1 - 2020/8/15

N2 - Microstructure characteristic and its effects on electrochemical dissolution behavior of horizontal plane (HP) and vertical plane (VP) in the laser solid formed (LSF) Inconel718 alloy after double aging (DA) heat treatment (DA-LSF Inconel718) were investigated. Compared to the as-deposited one, DA-LSF Inconel718 shows more phases and presents electrochemical anisotropy between HP and VP including the polarization curves, current efficiency curves and surface roughness. It is caused by different electrochemical dissolution processes on HP and VP and proved that surface energy has no obvious effect. Three models were proposed to illustrate electrochemical dissolution behavior, surface formation mechanism and electrochemical anisotropy, respectively.

AB - Microstructure characteristic and its effects on electrochemical dissolution behavior of horizontal plane (HP) and vertical plane (VP) in the laser solid formed (LSF) Inconel718 alloy after double aging (DA) heat treatment (DA-LSF Inconel718) were investigated. Compared to the as-deposited one, DA-LSF Inconel718 shows more phases and presents electrochemical anisotropy between HP and VP including the polarization curves, current efficiency curves and surface roughness. It is caused by different electrochemical dissolution processes on HP and VP and proved that surface energy has no obvious effect. Three models were proposed to illustrate electrochemical dissolution behavior, surface formation mechanism and electrochemical anisotropy, respectively.

KW - Additive manufacturing (AM)

KW - Anodic dissolution

KW - Laser solid forming (LSF)

KW - Polarization

KW - SEM

KW - Superalloys

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U2 - 10.1016/j.corsci.2020.108750

DO - 10.1016/j.corsci.2020.108750

M3 - 文章

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SN - 0010-938X

VL - 173

JO - Corrosion Science

JF - Corrosion Science

M1 - 108750

ER -

Electrochemical dissolution behavior of heat treated laser solid formed Inconel718

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