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Hooper, P. A.
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Publications (5/5 displayed)
- 2019An experimental methodology to characterise post-necking behaviour and quantify ductile damage accumulation in isotropic materialscitations
- 2019Uniaxial compression of single crystal and polycrystalline tantalumcitations
- 2018Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skinscitations
- 2018Printability and microstructure of the CoCrFeMnNi high-entropy alloy fabricated by laser powder bed fusioncitations
- 2016Experimental techniques for ductile damage characterisationcitations
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article
Printability and microstructure of the CoCrFeMnNi high-entropy alloy fabricated by laser powder bed fusion
Abstract
he CoCrFeMnNi high-entropy alloy is a promising candidate for metal additive manufacturing. In this study, single-layer and multi-layer builds were produced by laser powder bed fusion to study microstructure formation in rapid cooling and its evolution during repeated metal deposition. CoCrFeMnNi showed good printability with high consolidation and uniform high hardness. It is shown that microstructure in the printed alloy is governed by epitaxial growth and competitive grain growth. As a consequence, a bi-directional scanning pattern without rotation in subsequent layers generates a dominant alternating sequence of two crystal orientations.