Electrochemical behaviour of laser solid formed Ti–6Al–4V alloy in a highly concentrated NaCl solution

Jiaqiang Li; Xin Lin; Pengfei Guo; Menghua Song; Weidong Huang

doi:10.1016/j.corsci.2018.07.023

Electrochemical behaviour of laser solid formed Ti–6Al–4V alloy in a highly concentrated NaCl solution

Jiaqiang Li, Xin Lin, Pengfei Guo, Menghua Song, Weidong Huang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

93 Scopus citations

Abstract

Grain characteristics exhibit significant effects on electrochemical machining. The effects of the surface of grains on the electrochemical behaviour of laser solid formed Ti-6Al-4V deposits were investigated using a 15 wt.% NaCl solution. The epitaxial growth behaviour caused the deposits to generally exhibit columnar grains near the lateral surface and equiaxed-shape grains near the top surface. The coarser columnar grains presented inferior corrosion resistance, while the equiaxed grains exhibited slightly better corrosion resistance but distinctly poorer electrochemical machinability. The increase in the β/α volume ratio of the grain decreased its corrosion resistance but increased the transpassive dissolution potential.

Original language	English
Pages (from-to)	161-174
Number of pages	14
Journal	Corrosion Science
Volume	142
DOIs	https://doi.org/10.1016/j.corsci.2018.07.023
State	Published - Sep 2018

Keywords

Additive manufacturing (AM)
Anodic dissolution
EIS
Polarization
Titanium

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10.1016/j.corsci.2018.07.023

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title = "Electrochemical behaviour of laser solid formed Ti–6Al–4V alloy in a highly concentrated NaCl solution",

abstract = "Grain characteristics exhibit significant effects on electrochemical machining. The effects of the surface of grains on the electrochemical behaviour of laser solid formed Ti-6Al-4V deposits were investigated using a 15 wt.% NaCl solution. The epitaxial growth behaviour caused the deposits to generally exhibit columnar grains near the lateral surface and equiaxed-shape grains near the top surface. The coarser columnar grains presented inferior corrosion resistance, while the equiaxed grains exhibited slightly better corrosion resistance but distinctly poorer electrochemical machinability. The increase in the β/α volume ratio of the grain decreased its corrosion resistance but increased the transpassive dissolution potential.",

keywords = "Additive manufacturing (AM), Anodic dissolution, EIS, Polarization, Titanium",

author = "Jiaqiang Li and Xin Lin and Pengfei Guo and Menghua Song and Weidong Huang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.corsci.2018.07.023",

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T1 - Electrochemical behaviour of laser solid formed Ti–6Al–4V alloy in a highly concentrated NaCl solution

AU - Li, Jiaqiang

AU - Lin, Xin

AU - Guo, Pengfei

AU - Song, Menghua

AU - Huang, Weidong

PY - 2018/9

Y1 - 2018/9

N2 - Grain characteristics exhibit significant effects on electrochemical machining. The effects of the surface of grains on the electrochemical behaviour of laser solid formed Ti-6Al-4V deposits were investigated using a 15 wt.% NaCl solution. The epitaxial growth behaviour caused the deposits to generally exhibit columnar grains near the lateral surface and equiaxed-shape grains near the top surface. The coarser columnar grains presented inferior corrosion resistance, while the equiaxed grains exhibited slightly better corrosion resistance but distinctly poorer electrochemical machinability. The increase in the β/α volume ratio of the grain decreased its corrosion resistance but increased the transpassive dissolution potential.

AB - Grain characteristics exhibit significant effects on electrochemical machining. The effects of the surface of grains on the electrochemical behaviour of laser solid formed Ti-6Al-4V deposits were investigated using a 15 wt.% NaCl solution. The epitaxial growth behaviour caused the deposits to generally exhibit columnar grains near the lateral surface and equiaxed-shape grains near the top surface. The coarser columnar grains presented inferior corrosion resistance, while the equiaxed grains exhibited slightly better corrosion resistance but distinctly poorer electrochemical machinability. The increase in the β/α volume ratio of the grain decreased its corrosion resistance but increased the transpassive dissolution potential.

KW - Additive manufacturing (AM)

KW - Anodic dissolution

KW - EIS

KW - Polarization

KW - Titanium

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DO - 10.1016/j.corsci.2018.07.023

M3 - 文章

AN - SCOPUS:85050497569

SN - 0010-938X

VL - 142

SP - 161

EP - 174

JO - Corrosion Science

JF - Corrosion Science

ER -

Electrochemical behaviour of laser solid formed Ti–6Al–4V alloy in a highly concentrated NaCl solution

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Keywords

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