激光增材制造过程中球形固体和空心纳米镍粉末热力学性能的分子动力学研究

IF 3.1 4区医学 Q2 BIOPHYSICS

Journal of Applied Biomaterials & Functional Materials Pub Date : 2022-12-30 DOI:10.35745/afm2022v02.04.0005

Ling-Feng Lai, Yu-Chen Su, Chun-Ming Chang, Kuei-Shu Hsu, D. Lu, Jian-Ming Lu

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引用次数: 0

摘要

采用嵌入原子法(EAM)/合金电位的分子动力学(MD)模拟研究了激光增材制造(AM)过程中纳米级空心球形镍(Ni)粉末的性能。研究了纳米Ni粉末在室温和室温至熔化温度下的热力学性能。最后，提出了激光增材加工的最佳工艺参数。纳米级空心球形Ni粉末的最佳聚结温度在980 ~ 1421K之间，熔融温度在1320 ~ 1470 K之间。熔结温度和熔点均低于Ni的熔点(1728k)。

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Molecular-Dynamical Investigation of Thermomechanical Properties of Spherical Solid and Hollow Nickel Nanopowder during Laser Additive Manufacturing Process

Molecular dynamics (MD) simulation with the embedded-atom method (EAM)/alloy potential is used to investigate the property of the nanoscale hollow spherical Nickel (Ni) powder during the laser additive manufacturing (AM) process. The thermomechanical properties of the Ni nanopowder is also explored (1) at room temperature and (2) from room temperature to the melting temperature during laser AM of powder bed fusion. As a result, the optimum parameters for the laser AM process are proposed. The optimal coalescence temperature of the nanoscale hollow spherical Ni powder is in the range between 980 and 1421K, while the melting temperature is in the range between 1320 and 1470 K. The coalescence and melting temperatures are lower than the melting point of Ni (1728 K).

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来源期刊

Journal of Applied Biomaterials & Functional Materials BIOPHYSICS-ENGINEERING, BIOMEDICAL

CiteScore

4.40

自引率

4.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Biomaterials & Functional Materials (JABFM) is an open access, peer-reviewed, international journal considering the publication of original contributions, reviews and editorials dealing with clinical and laboratory investigations in the fast growing field of biomaterial sciences and functional materials. The areas covered by the journal will include: • Biomaterials / Materials for biomedical applications • Functional materials • Hybrid and composite materials • Soft materials • Hydrogels • Nanomaterials • Gene delivery • Nonodevices • Metamaterials • Active coatings • Surface functionalization • Tissue engineering • Cell delivery/cell encapsulation systems • 3D printing materials • Material characterization • Biomechanics