Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 786, Issue -, Pages 551-556Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.01.327
Keywords
Aluminium alloys; Titanium diboride; Selective laser melting; Microstructure; Texture
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Pronounced crystallographic texture, characteristic for the parts manufactured by selective laser melting, is eliminated upon addition of TiB2 microparticles to Al-12Si powder. Due to the wetting of TiB2 ceramic by Al-12Si melt and a high inoculation efficiency, a homogeneous microstructure consisting of fine equiaxed grains with random crystallographic orientation is formed by SLM processing of the Al-12Si/ TiB2 powder mixture. The Al-12Si/TiB2 samples exhibit enhanced yield strength and microhardness, compared to the TiB2-free Al-12Si samples produced at the same SLM conditions. (C) 2019 Elsevier B.V. All rights reserved.
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