Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder

Yujie Cui; Yufan Zhao; Haruko Numata; Huakang Bian; Kimio Wako; Kenta Yamanaka; Kenta Aoyagi; Chen Zhang; Akihiko Chiba

doi:10.1016/j.powtec.2020.08.027

Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder

Yujie Cui, Yufan Zhao, Haruko Numata, Huakang Bian, Kimio Wako, Kenta Yamanaka, Kenta Aoyagi, Chen Zhang, Akihiko Chiba

Materials Processing and Characterization Division

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

9 Citations (Scopus)

Abstract

The starting powder quality significantly influences the process window optimization and properties of parts fabricated by additive manufacturing. In this study, we investigated the influence of plasma rotating electrode process (PREP) parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder. The martensite size in the powder decreased with increasing rotating electrode speed owing to the higher cooling rate. Numerical simulations using computational thermal fluid dynamics were found to be feasible for quantitative evaluation of the temperature variation, cooling rate, and powder size during PREP, which provide a new strategy to study the mechanism of powder formation. In addition, a statistical model combining principal component analysis and the Monte Carlo methods was proposed to evaluate the relationships between PREP parameters and average powder diameter based on the limited collected experimental data. The proposed statistical model can also be applied in research fields where multivariable problems exist.

Original language	English
Pages (from-to)	363-372
Number of pages	10
Journal	Powder Technology
Volume	376
DOIs	https://doi.org/10.1016/j.powtec.2020.08.027
Publication status	Published - 2020 Oct

Keywords

Cooling rate
Martensite
Particle size
Powder fabrication
Statistic analysis

ASJC Scopus subject areas

Chemical Engineering(all)

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10.1016/j.powtec.2020.08.027

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title = "Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder",

abstract = "The starting powder quality significantly influences the process window optimization and properties of parts fabricated by additive manufacturing. In this study, we investigated the influence of plasma rotating electrode process (PREP) parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder. The martensite size in the powder decreased with increasing rotating electrode speed owing to the higher cooling rate. Numerical simulations using computational thermal fluid dynamics were found to be feasible for quantitative evaluation of the temperature variation, cooling rate, and powder size during PREP, which provide a new strategy to study the mechanism of powder formation. In addition, a statistical model combining principal component analysis and the Monte Carlo methods was proposed to evaluate the relationships between PREP parameters and average powder diameter based on the limited collected experimental data. The proposed statistical model can also be applied in research fields where multivariable problems exist.",

keywords = "Cooling rate, Martensite, Particle size, Powder fabrication, Statistic analysis",

author = "Yujie Cui and Yufan Zhao and Haruko Numata and Huakang Bian and Kimio Wako and Kenta Yamanaka and Kenta Aoyagi and Chen Zhang and Akihiko Chiba",

note = "Funding Information: The authors are grateful for the financial support from Materials Integration for Revolutionary Design System of Structural Materials of the Cross Ministerial Strategic Innovation Promotion Program (SIP) of Japan Science and Technology (JST).Yujie Cui acknowledges the financial support from the Japan Society for the Promotion of Science (Grant no. 20K14619 ). Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = oct,

doi = "10.1016/j.powtec.2020.08.027",

language = "English",

volume = "376",

pages = "363--372",

journal = "Powder Technology",

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T1 - Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder

AU - Cui, Yujie

AU - Zhao, Yufan

AU - Numata, Haruko

AU - Bian, Huakang

AU - Wako, Kimio

AU - Yamanaka, Kenta

AU - Aoyagi, Kenta

AU - Zhang, Chen

AU - Chiba, Akihiko

N1 - Funding Information: The authors are grateful for the financial support from Materials Integration for Revolutionary Design System of Structural Materials of the Cross Ministerial Strategic Innovation Promotion Program (SIP) of Japan Science and Technology (JST).Yujie Cui acknowledges the financial support from the Japan Society for the Promotion of Science (Grant no. 20K14619 ). Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/10

Y1 - 2020/10

N2 - The starting powder quality significantly influences the process window optimization and properties of parts fabricated by additive manufacturing. In this study, we investigated the influence of plasma rotating electrode process (PREP) parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder. The martensite size in the powder decreased with increasing rotating electrode speed owing to the higher cooling rate. Numerical simulations using computational thermal fluid dynamics were found to be feasible for quantitative evaluation of the temperature variation, cooling rate, and powder size during PREP, which provide a new strategy to study the mechanism of powder formation. In addition, a statistical model combining principal component analysis and the Monte Carlo methods was proposed to evaluate the relationships between PREP parameters and average powder diameter based on the limited collected experimental data. The proposed statistical model can also be applied in research fields where multivariable problems exist.

AB - The starting powder quality significantly influences the process window optimization and properties of parts fabricated by additive manufacturing. In this study, we investigated the influence of plasma rotating electrode process (PREP) parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder. The martensite size in the powder decreased with increasing rotating electrode speed owing to the higher cooling rate. Numerical simulations using computational thermal fluid dynamics were found to be feasible for quantitative evaluation of the temperature variation, cooling rate, and powder size during PREP, which provide a new strategy to study the mechanism of powder formation. In addition, a statistical model combining principal component analysis and the Monte Carlo methods was proposed to evaluate the relationships between PREP parameters and average powder diameter based on the limited collected experimental data. The proposed statistical model can also be applied in research fields where multivariable problems exist.

KW - Cooling rate

KW - Martensite

KW - Particle size

KW - Powder fabrication

KW - Statistic analysis

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JO - Powder Technology

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Effects of plasma rotating electrode process parameters on the particle size distribution and microstructure of Ti-6Al-4 V alloy powder

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Keywords

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