Duplex corrosion mechanisms correlated to α/γ phase selection in containerlessly processed Fe-Cr-Ni-Mo alloy

L. Y. Li; C. H. Sun; Y. Ruan; B. Wei

doi:10.1016/j.corsci.2023.111311

Duplex corrosion mechanisms correlated to α/γ phase selection in containerlessly processed Fe-Cr-Ni-Mo alloy

L. Y. Li, C. H. Sun, Y. Ruan, B. Wei

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

5 Scopus citations

Abstract

The α/γ phase selection mechanism and corrosion resistance of Fe-21%Cr-12%Ni-5%Mo alloy were investigated by both individual electromagnetic levitation (EML) and EML coupled with falling quench (EML+FQ) techniques. The decomposition of primary δ phase could be partially or completely suppressed in two containerless processing. Both selective and pitting corrosion behaviors were discovered in alloy, which were related to the crystalline orientations and solute distributions of constituent phases. The anti-corrosion property of EML+FQ processed alloy was significantly enhanced with higher corrosion potential of 0 V_SCE, lower corrosion current density of 4.1 × 10⁻⁷ A/cm² and lower corrosion rate decreasing over one order of magnitude.

Original language	English
Article number	111311
Journal	Corrosion Science
Volume	221
DOIs	https://doi.org/10.1016/j.corsci.2023.111311
State	Published - 15 Aug 2023

Keywords

Corrosion behavior
Fe-Cr-Ni-Mo alloy
Multiple containerless solidification
Phase selection

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10.1016/j.corsci.2023.111311

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title = "Duplex corrosion mechanisms correlated to α/γ phase selection in containerlessly processed Fe-Cr-Ni-Mo alloy",

abstract = "The α/γ phase selection mechanism and corrosion resistance of Fe-21%Cr-12%Ni-5%Mo alloy were investigated by both individual electromagnetic levitation (EML) and EML coupled with falling quench (EML+FQ) techniques. The decomposition of primary δ phase could be partially or completely suppressed in two containerless processing. Both selective and pitting corrosion behaviors were discovered in alloy, which were related to the crystalline orientations and solute distributions of constituent phases. The anti-corrosion property of EML+FQ processed alloy was significantly enhanced with higher corrosion potential of 0 VSCE, lower corrosion current density of 4.1 × 10−7 A/cm2 and lower corrosion rate decreasing over one order of magnitude.",

keywords = "Corrosion behavior, Fe-Cr-Ni-Mo alloy, Multiple containerless solidification, Phase selection",

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T1 - Duplex corrosion mechanisms correlated to α/γ phase selection in containerlessly processed Fe-Cr-Ni-Mo alloy

AU - Li, L. Y.

AU - Sun, C. H.

AU - Ruan, Y.

AU - Wei, B.

PY - 2023/8/15

Y1 - 2023/8/15

N2 - The α/γ phase selection mechanism and corrosion resistance of Fe-21%Cr-12%Ni-5%Mo alloy were investigated by both individual electromagnetic levitation (EML) and EML coupled with falling quench (EML+FQ) techniques. The decomposition of primary δ phase could be partially or completely suppressed in two containerless processing. Both selective and pitting corrosion behaviors were discovered in alloy, which were related to the crystalline orientations and solute distributions of constituent phases. The anti-corrosion property of EML+FQ processed alloy was significantly enhanced with higher corrosion potential of 0 VSCE, lower corrosion current density of 4.1 × 10−7 A/cm2 and lower corrosion rate decreasing over one order of magnitude.

AB - The α/γ phase selection mechanism and corrosion resistance of Fe-21%Cr-12%Ni-5%Mo alloy were investigated by both individual electromagnetic levitation (EML) and EML coupled with falling quench (EML+FQ) techniques. The decomposition of primary δ phase could be partially or completely suppressed in two containerless processing. Both selective and pitting corrosion behaviors were discovered in alloy, which were related to the crystalline orientations and solute distributions of constituent phases. The anti-corrosion property of EML+FQ processed alloy was significantly enhanced with higher corrosion potential of 0 VSCE, lower corrosion current density of 4.1 × 10−7 A/cm2 and lower corrosion rate decreasing over one order of magnitude.

KW - Corrosion behavior

KW - Fe-Cr-Ni-Mo alloy

KW - Multiple containerless solidification

KW - Phase selection

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DO - 10.1016/j.corsci.2023.111311

M3 - 文章

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SN - 0010-938X

VL - 221

JO - Corrosion Science

JF - Corrosion Science

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ER -

Duplex corrosion mechanisms correlated to α/γ phase selection in containerlessly processed Fe-Cr-Ni-Mo alloy

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Keywords

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