粉末重复使用性对用于PBF-LB工业生产的Ti6Al4V ELI批量重复性的影响

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2022-10-18 DOI:10.1080/00325899.2022.2133357

L. Cordova, C. Sithole, Eric Macía Rodríguez, I. Gibson, M. Campos

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引用次数: 2

摘要

在粉末床聚变激光束(PBF-LB)中，粉末的可重用性是保持成本效益和可持续性的关键。在本研究中，研究了通常用于医疗和航空航天应用的高灵敏度Ti6Al4V ELI粉末。分析了新粉末和重复使用粉末在10个构建周期后的粉末性能，如形态、粒度分布(PSD)、化学成分和流动性的变化。卡尼流量计的流量由6.8 s增加到12 s。氧含量由0.11%增加到0.12%。尺寸偏差是在六个构建中测量的，八个样本分布在构建板上。多维数据集的密度没有显示出相关的密度差异(从99.6%到99.9%)，只有最后一批数据集的密度略低于之前的构建。在整个实验过程中，粉末和结构的研究特性保持不变，证明了金属零件工业生产的可重复性。

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Impact of powder reusability on batch repeatability of Ti6Al4V ELI for PBF-LB industrial production

ABSTRACT In powder bed fusion laser beam (PBF-LB), powder reusability remains key to keeping cost-effectivity as well as sustainability. In this study, highly sensitive Ti6Al4V ELI powder typically used for medical and aerospace applications is studied. Powder properties of new and reused powders after 10 build cycles subjected to variations such as morphology, particle size distribution (PSD), chemical composition and flowability were analysed. The flow rate using Carney flowmeter increased from 6.8 s to 12 s. Oxygen content slightly increased from 0.11% to 0.12%. The dimensional deviations are measured in six builds of eight samples spread through the build plate. The density of the cubes does not show relevant differences in density (from 99.6% to 99.9%), only the last batch exhibits slightly lower density than the previous builds. Studied properties for the powder and builds are maintained throughout the experiment, demonstrating repeatability of industrial production of metal parts.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.