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Selective laser melting of TiC/H13 steel bulk-form nanocomposites with variations in processing parameters

Published online by Cambridge University Press:  08 February 2017

Bandar AlMangour ,
Franklin Yu ,
Jenn-Ming Yang  and
Dariusz Grzesiak
Bandar AlMangour*
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
Franklin Yu
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
Jenn-Ming Yang
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
Dariusz Grzesiak
Affiliation:
Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Poland
*
Address all correspondence to B. AlMangour at [email protected]
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Abstract

TiC/H13 nanocomposite parts were processed by selective laser melting using various energy densities; one part also underwent hot isostatic pressing (HIP). The effect of energy density and HIPing on densification, microstructure, and hardness were evaluated. It was found that the densification was not largely affected by the energy density, but the HIP-treated sample displayed a large improvement in relative density. With increasing energy density, the microstructures showed high levels of dispersion of nanoparticles, while HIP treatment coarsened the microstructure and induced agglomeration. Both HIP treatment and increased energy density lowered hardness markedly; this was likely due to annealing effects.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 1 , March 2017 , pp. 84 - 89
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Copyright
Copyright © Materials Research Society 2017 

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