Materials Development

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HiETA have a supply chain to provide Additive Manufacturing services and products in the following materials:

  • Inconel 625
  • Inconel 718
  • AlSi10Mg
  • SS316L
  • CM247 LC
  • Refractory Metals
  • Hastelloy X
  • Ti6Al4v

We have a highly qualified team of chartered engineers and PhDs in our applications and materials team, with extensive experience processing new materials in powder-bed AM. From customer requirements, using our up-to-date knowledge of AM and core metallurgical concepts, we have a network of partners who can supply alloy compositions according to your requirements. Utilising a design of experiments, HiETA generate a systematic selection of parameters, which are applied to a set of samples. These are polished and imaged to determine an optical density, using exclusive software tools developed by HiETA. The results are fed into a model to determine an optimal parameter set, and which can be validated through physical testing.

Using machine learning techniques, we aim to optimise scan strategies and machine settings to improve surface roughness, density, mechanical properties and build time. We are also developing novel post-processing methods such as; surface treatments such as hot isostatic pressing (HIP), vacuum and inert gas furnace solutions and ageing cycles, and powder removal.

Material characterisations is performed through mechanical testing such as tensile testing, hardness, stress rupture, creep, fatigue, thermal conductivity, metallography among others.

We are also capable of performing alloy development via our partners. In our state-of-the-art facility, we have reduced build volume systems for initial powder trials. 

This reduces the need for large volumes of powders and offers the flexibility to swiftly change alloy compositions in the early stages of development. We also use open machine platforms from Renishaw which allow tailored parameter sets to be developed. Once base parameters are established, we have a deep understanding of machines and equipment to scale up to production, with validated multi-laser parameter development programmes and capability.

HiETA have developed materials for customers in various markets, such as:

  • Nuclear & Energy
  • Chemical processing
  • Defence & Space
  • Power electronics