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East, Daniel
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Publications (7/7 displayed)
- 2021Microstructure and hardness variation of additively manufactured Ti-Ni-C functionally graded compositescitations
- 2021Twin roll casting of bulk amorphous alloys: modelling and experimental validation
- 2021Controlling Microstructure of FeCrMoBC Amorphous Metal Matrix Composites via Laser Directed Energy Depositioncitations
- 2016Production of bulk metallic glass sheet and its hybrid laminates
- 2016On the competition in phase formation during the crystallisation of Al-Ni-Y metallic glassescitations
- 2015Effects of Temperature and Strain Rate on the Dynamic Mechanical Behavior of a Fine Grained Al-Sc Alloy
- 2011High performance bulk metallic glass/carbon nanotube composite cathodes for electron field emissioncitations
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article
Microstructure and hardness variation of additively manufactured Ti-Ni-C functionally graded composites
Abstract
Ti–Ni–C functionally graded composites were fabricated using a LENS™ additive manufacturing system. A vertical chemical gradient was created by varying powder inputs linearly from Ti–6Al–4V at the bottom layer to approximately 40%wt Ni coated graphite at the top layer. Our results show that the phase constitution, microstructure, and hardness of the composites gradually change with chemical composition. With an increasing Ni coated graphite content, the in-situ synthesised TiC precipitates are distributed more densely, and their morphologies change from tiny flakes to dendrites and finally become coralloid structures. Simultaneously, the hardness of the graded composite increases with the addition of Ni coated graphite