Microstructure and properties of tantalum deposited by laser melting deposition using non-spherical tantalum powder

IF 4.7 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2026-08-01 Epub Date: 2026-01-12 DOI:10.1016/j.ijrmhm.2026.107673

Jun Yang, Yanhang Shi, Liu He, Wei Wang, Guomin Le, Xinjian Zhang

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Abstract

The elevated cost of spherical tantalum powder utilized in additive manufacturing significantly hinders the development and application of tantalum components. In this study, three sets of tantalum thin-wall samples were fabricated using laser melting deposition (LMD) with varying laser power settings, employing non-spherical tantalum powder as the raw material. The samples were analyzed for their scanning electron microscopy (SEM) morphology, phase composition, density, hardness, mechanical properties, and impurity content. The findings indicate that the tantalum components produced via LMD exhibit columnar grains oriented along the deposition direction, achieving a high density of up to 98.7%. The LMD-fabricated tantalum components demonstrate moderate mechanical properties and elongation rate. This study demonstrates that non-spherical tantalum powder can be effectively utilized to produce tantalum components with superior performance through LMD. This approach offers a novel and cost-effective method for the preparation of tantalum components, which holds significant potential for the widespread adoption and application of tantalum.

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非球形钽粉激光熔敷钽的组织与性能

在增材制造中使用的球形钽粉的高成本严重阻碍了钽组件的开发和应用。本研究以非球形钽粉为原料，采用激光熔化沉积（LMD）技术，在不同的激光功率设置下制备了三组钽薄壁样品。分析了样品的扫描电镜形貌、相组成、密度、硬度、力学性能和杂质含量。结果表明，通过LMD制备的钽组分呈现出沿沉积方向取向的柱状晶粒，密度高达98.7%。lmd制备的钽元件具有中等的力学性能和伸长率。本研究表明，通过LMD可以有效地利用非球形钽粉制备性能优异的钽组分。该方法为制备钽组分提供了一种新颖、经济的方法，对钽的广泛采用和应用具有重要的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.