Powder characterisation and the impact on part performance in electron beam melted Ti6Al4V

Alphons Anandaraj Antonysamy; Lakshmi Lavanya Parimi; Mahesh Kumar Mani; Christopher T. Schade; Alexander J.G. Lunt

doi:10.1016/j.matdes.2024.112788

Powder characterisation and the impact on part performance in electron beam melted Ti6Al4V

Alphons Anandaraj Antonysamy, Lakshmi Lavanya Parimi, Mahesh Kumar Mani, Christopher T. Schade, Alexander J.G. Lunt

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

Abstract

Metallic powder for Additive Manufacturing (AM) typically varies between different batches, while being supplied to achieve the same customer specification. In order to reduce this variation and minimise waste, batches are often mixed together in both their virgin and used form. However, the properties of bulk components must have limited variance in order to be reliably used in an industrial setting. This manuscript is focused on the analysis of Grade 5 Ti6Al4V powders (3 virgin, plus 2 blends) and the associated mechanical properties of Electron Beam Melted (EBM) AM specimens. Measurements were performed in accordance with the principles defined in the MMPDS Handbook, ESDU database, and ASTM F2924. The tensile, and fatigue properties of the EBM specimens were found to be superior when compared with Ti6Al4V properties within these standards. This demonstrated that these powders are suitable for a wide range of commercial applications, and that these blended powders (including used powders) are able to achieve these requirements. Additionally, the results provide a systematic route for powder verification and highlight the importance of adhering to standardised principles and specifications to ensure quality and reliability in metallic AM materials.

Original language	English
Article number	112788
Journal	Materials & Design
Volume	239
Early online date	28 Feb 2024
DOIs	https://doi.org/10.1016/j.matdes.2024.112788
Publication status	Published - 31 Mar 2024

Funding

The authors (Alphons A Antonysamy, Mahesh Kumar Mani and Lakshmi Lavanya Parimi) of this study would like to thank the UK-Aerospace Technology Institute for funding the “Ti Powder and Supply Chain Development” project (Grant Reference No. 113051), which made it possible for them to carry out this research. In addition, Authors acknowledges the provision of the powder materials and the financial help towards testing of the AM powder and bulk materials by Dowlais-GKN Hoeganaes.

Funders	Funder number
Lakshmi Lavanya Parimi
Aerospace Technology Institute	113051

Keywords

Additive manufacture
Electron beam melting
fatigue performance
Microstructure
Statistical allowables
Tensile properties
Ti6Al4V

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matdes.2024.112788Licence: CC BY-NC-ND

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Powder characterisation and the impact on part performance in electron beam melted Ti6Al4V

Abstract

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Keywords

ASJC Scopus subject areas

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