Electrochemical dissolution behavior of Ti6Al4V alloy: Effect of microstructure and processing method

Jiaqiang Li; Xin Lin; Hua Tan; Gangxian Zhu; Yayun Liu; K. C. Chan; Shihong Shi

doi:10.1016/j.jmatprotec.2022.117646

Electrochemical dissolution behavior of Ti6Al4V alloy: Effect of microstructure and processing method

Jiaqiang Li, Xin Lin (Corresponding Author), Hua Tan, Gangxian Zhu, Yayun Liu (Corresponding Author), K. C. Chan, Shihong Shi

Research output: Journal article publication › Journal article › Academic research › peer-review

14 Citations (Scopus)

Abstract

We report the electrochemical dissolution behavior of Ti-based alloys prepared by two different processing methods including laser solid foming (LSF) additive manufacturing and forging in a 15 wt % NaCl solution. The corrosion resistance of the forged Ti6Al4V alloy is slightly better than that of the LSFed state, and is ascribed to the dominant galvanic effect of fine α/β lamellae accelerating the corrosion dissolution rate of the LSFed sample. The size, morphology, and content of the α/β phase and Al segregation affect the anodic dissolution behavior by promoting/inhibiting the galvanic effect. The galvanic effect of duplex Ti-based alloys is the key factor determining the anodic dissolution performance and dissolved surface quality. The distinction in electrochemical dissolution behavior on Ti6Al4V alloy produced by LSF and forging provides a mechanism support on their difference of electrochemical machining machinability.

Original language	English
Article number	117646
Journal	Journal of Materials Processing Technology
Volume	307
DOIs	https://doi.org/10.1016/j.jmatprotec.2022.117646
Publication status	Published - Sept 2022

Keywords

Additive manufacturing
EIS
Passivation
Polarization
Titanium alloys

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

More information

10.1016/j.jmatprotec.2022.117646

Cite this

@article{54a319e3d40341dd8ca5a6b883cb4130,

title = "Electrochemical dissolution behavior of Ti6Al4V alloy: Effect of microstructure and processing method",

abstract = "We report the electrochemical dissolution behavior of Ti-based alloys prepared by two different processing methods including laser solid foming (LSF) additive manufacturing and forging in a 15 wt % NaCl solution. The corrosion resistance of the forged Ti6Al4V alloy is slightly better than that of the LSFed state, and is ascribed to the dominant galvanic effect of fine α/β lamellae accelerating the corrosion dissolution rate of the LSFed sample. The size, morphology, and content of the α/β phase and Al segregation affect the anodic dissolution behavior by promoting/inhibiting the galvanic effect. The galvanic effect of duplex Ti-based alloys is the key factor determining the anodic dissolution performance and dissolved surface quality. The distinction in electrochemical dissolution behavior on Ti6Al4V alloy produced by LSF and forging provides a mechanism support on their difference of electrochemical machining machinability.",

keywords = "Additive manufacturing, EIS, Passivation, Polarization, Titanium alloys",

author = "Jiaqiang Li and Xin Lin and Hua Tan and Gangxian Zhu and Yayun Liu and Chan, {K. C.} and Shihong Shi",

note = "Funding Information: The research was supported under the National Natural Science Foundation of China (No. 52105387 ), China Postdoctoral Science Foundation (No. 2021M692349 ), Natural Science Research Projects of General Universities in Jiangsu Province (No. 21KJB460019 ), and Hong Kong Scholars Program (No. XJ2021032 ). Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = sep,

doi = "10.1016/j.jmatprotec.2022.117646",

language = "English",

volume = "307",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electrochemical dissolution behavior of Ti6Al4V alloy: Effect of microstructure and processing method

AU - Li, Jiaqiang

AU - Lin, Xin

AU - Tan, Hua

AU - Zhu, Gangxian

AU - Liu, Yayun

AU - Chan, K. C.

AU - Shi, Shihong

N1 - Funding Information: The research was supported under the National Natural Science Foundation of China (No. 52105387 ), China Postdoctoral Science Foundation (No. 2021M692349 ), Natural Science Research Projects of General Universities in Jiangsu Province (No. 21KJB460019 ), and Hong Kong Scholars Program (No. XJ2021032 ). Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/9

Y1 - 2022/9

N2 - We report the electrochemical dissolution behavior of Ti-based alloys prepared by two different processing methods including laser solid foming (LSF) additive manufacturing and forging in a 15 wt % NaCl solution. The corrosion resistance of the forged Ti6Al4V alloy is slightly better than that of the LSFed state, and is ascribed to the dominant galvanic effect of fine α/β lamellae accelerating the corrosion dissolution rate of the LSFed sample. The size, morphology, and content of the α/β phase and Al segregation affect the anodic dissolution behavior by promoting/inhibiting the galvanic effect. The galvanic effect of duplex Ti-based alloys is the key factor determining the anodic dissolution performance and dissolved surface quality. The distinction in electrochemical dissolution behavior on Ti6Al4V alloy produced by LSF and forging provides a mechanism support on their difference of electrochemical machining machinability.

AB - We report the electrochemical dissolution behavior of Ti-based alloys prepared by two different processing methods including laser solid foming (LSF) additive manufacturing and forging in a 15 wt % NaCl solution. The corrosion resistance of the forged Ti6Al4V alloy is slightly better than that of the LSFed state, and is ascribed to the dominant galvanic effect of fine α/β lamellae accelerating the corrosion dissolution rate of the LSFed sample. The size, morphology, and content of the α/β phase and Al segregation affect the anodic dissolution behavior by promoting/inhibiting the galvanic effect. The galvanic effect of duplex Ti-based alloys is the key factor determining the anodic dissolution performance and dissolved surface quality. The distinction in electrochemical dissolution behavior on Ti6Al4V alloy produced by LSF and forging provides a mechanism support on their difference of electrochemical machining machinability.

KW - Additive manufacturing

KW - EIS

KW - Passivation

KW - Polarization

KW - Titanium alloys

UR - http://www.scopus.com/inward/record.url?scp=85131762134&partnerID=8YFLogxK

U2 - 10.1016/j.jmatprotec.2022.117646

DO - 10.1016/j.jmatprotec.2022.117646

M3 - Journal article

AN - SCOPUS:85131762134

SN - 0924-0136

VL - 307

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

M1 - 117646

ER -

Electrochemical dissolution behavior of Ti6Al4V alloy: Effect of microstructure and processing method

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this