Effect of metastable phase content controlled by heat-treatment on corrosion behavior of directionally solidified Ni-12 wt%Si hypereutectic composites

Chunjuan Cui; Chongyang Wu; Wei Liu; Kai Zhang; Yan Wang; Yanan Zhao; Yue Liu; Haijun Su

doi:10.1016/j.matchemphys.2022.126827

Effect of metastable phase content controlled by heat-treatment on corrosion behavior of directionally solidified Ni-12 wt%Si hypereutectic composites

Chunjuan Cui, Chongyang Wu, Wei Liu, Kai Zhang, Yan Wang, Yanan Zhao, Yue Liu, Haijun Su

School of Materials Sience and Engineering

Xi'an University of Architecture and Technology

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

3 Scopus citations

Abstract

The Ni-12 wt%Si hypereutectic composites with solidification rates of 6 μm/s, 9 μm/s, 25 μm/s and 40 μm/s were prepared by an improved Bridgman directional solidification technique. However, the metastable phase Ni₃₁Si₁₂ was inevitably formed during solidification process. This is usually unfavorable to the stability of the microstructure and properties of alloy. The content of metastable phase was decreased by different annealing heat treatment processes in this paper. Moreover, the effect of metastable phase content on the corrosion behavior of Ni-12 wt%Si hypereutectic composites in 10% H₂SO₄ solution was investigated as well.

Original language	English
Article number	126827
Journal	Materials Chemistry and Physics
Volume	292
DOIs	https://doi.org/10.1016/j.matchemphys.2022.126827
State	Published - 1 Dec 2022

Keywords

Annealing heat-treatment
Corrosion behavior
Electrochemical performance
Metastable phase
Solidification microstructure

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10.1016/j.matchemphys.2022.126827

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title = "Effect of metastable phase content controlled by heat-treatment on corrosion behavior of directionally solidified Ni-12 wt%Si hypereutectic composites",

abstract = "The Ni-12 wt%Si hypereutectic composites with solidification rates of 6 μm/s, 9 μm/s, 25 μm/s and 40 μm/s were prepared by an improved Bridgman directional solidification technique. However, the metastable phase Ni31Si12 was inevitably formed during solidification process. This is usually unfavorable to the stability of the microstructure and properties of alloy. The content of metastable phase was decreased by different annealing heat treatment processes in this paper. Moreover, the effect of metastable phase content on the corrosion behavior of Ni-12 wt%Si hypereutectic composites in 10% H2SO4 solution was investigated as well.",

keywords = "Annealing heat-treatment, Corrosion behavior, Electrochemical performance, Metastable phase, Solidification microstructure",

author = "Chunjuan Cui and Chongyang Wu and Wei Liu and Kai Zhang and Yan Wang and Yanan Zhao and Yue Liu and Haijun Su",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

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doi = "10.1016/j.matchemphys.2022.126827",

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TY - JOUR

T1 - Effect of metastable phase content controlled by heat-treatment on corrosion behavior of directionally solidified Ni-12 wt%Si hypereutectic composites

AU - Cui, Chunjuan

AU - Wu, Chongyang

AU - Liu, Wei

AU - Zhang, Kai

AU - Wang, Yan

AU - Zhao, Yanan

AU - Liu, Yue

AU - Su, Haijun

PY - 2022/12/1

Y1 - 2022/12/1

N2 - The Ni-12 wt%Si hypereutectic composites with solidification rates of 6 μm/s, 9 μm/s, 25 μm/s and 40 μm/s were prepared by an improved Bridgman directional solidification technique. However, the metastable phase Ni31Si12 was inevitably formed during solidification process. This is usually unfavorable to the stability of the microstructure and properties of alloy. The content of metastable phase was decreased by different annealing heat treatment processes in this paper. Moreover, the effect of metastable phase content on the corrosion behavior of Ni-12 wt%Si hypereutectic composites in 10% H2SO4 solution was investigated as well.

AB - The Ni-12 wt%Si hypereutectic composites with solidification rates of 6 μm/s, 9 μm/s, 25 μm/s and 40 μm/s were prepared by an improved Bridgman directional solidification technique. However, the metastable phase Ni31Si12 was inevitably formed during solidification process. This is usually unfavorable to the stability of the microstructure and properties of alloy. The content of metastable phase was decreased by different annealing heat treatment processes in this paper. Moreover, the effect of metastable phase content on the corrosion behavior of Ni-12 wt%Si hypereutectic composites in 10% H2SO4 solution was investigated as well.

KW - Annealing heat-treatment

KW - Corrosion behavior

KW - Electrochemical performance

KW - Metastable phase

KW - Solidification microstructure

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U2 - 10.1016/j.matchemphys.2022.126827

DO - 10.1016/j.matchemphys.2022.126827

M3 - 文章

AN - SCOPUS:85139592555

SN - 0254-0584

VL - 292

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

M1 - 126827

ER -

Effect of metastable phase content controlled by heat-treatment on corrosion behavior of directionally solidified Ni-12 wt%Si hypereutectic composites

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Keywords

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