Effect of Particle Size, Lubricant, and Heat Temperature on the Flowability of Ni-Based Powders for Additive Manufacturing

• Autorzy: Wang Huafang , Zhang Nan , Wang Miaohui , Yang Fang

Identyfikatory

DOI

10.24425/amm.2024.150921

• Języki publikacji: EN

Abstrakty

EN

Gas-atomized Ni-based powder tends to agglomerate, directly impacting the spreadability of printing process. In this paper, three technical methods are applied to restore the powder flowability, including regulating particle size distribution, lubricant modification, and heating treatment. As particle size increases, powder regains flowability. However, the average particle size of GH3536 powders with flowability is greater than 46 μm, which cannot meet the demand for 3D printing (15-53 μm). The flowability of GH3536 powder can be restored by adding zinc stearate lubricant. After lubricant modification, the printed samples display a 16% increase in elongation, along with a little improvement in tensile strength. This paper also investigates the flow properties change of raw powder heated at 100°C, 200°C, 300°C, and 400°C. When the temperature rises beyond 400°C, powder flowability fully returns, along with oxygen content increasing. Overall, the lubricant modification technique is appropriate in actual manufacturing, but the flow rate value of powders is typically high, exceeding 70 s/50 g. Increasing particle size and heat treatment can improve powder flowability and the flow rate of powder is less than 20 s/50 g.

Słowa kluczowe

EN

Ni-based powder; flowability; particle size distribution; lubricant modification; heating treatment

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 3
• Strony: 1005--1014
• Opis fizyczny: Bibliogr. 43 poz., fot., rys., tab.

Twórcy

autor

Wang Huafang

• China Machinery Institute of Advanced Materials (Zhengzhou) Co., Ltd , Zhengzhou 450001, China

• https://orcid.org/0000-0001-5337-2818

autor

Zhang Nan

• China Machinery Institute of Advanced Materials (Zhengzhou) Co., Ltd , Zhengzhou 450001, China

• https://orcid.org/0000-0002-4633-4968

autor

Wang Miaohui

• China Machinery Institute of Advanced Materials (Zhengzhou) Co., Ltd , Zhengzhou 450001, China

• https://orcid.org/0009-0005-9558-8955

autor

Yang Fang

• University of Science and Technology Beijing, Institute for Advanced Materials and Technology, Beijing 100083, China
• University of Science and Technology Beijing, Shunde Innovation School, Guangzhou 528399, China

• https://orcid.org/0000-0002-7093-7160

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Uwagi

This study was funded by the Key Project of the Defense Industrial Technology Development Program (GRANT NO. JCKY2022×××B207).