학술논문
Microstructure and corrosion resistance characteristics of Ti–AlN composite produced by selective laser melting.
Document Type
Article
Author
Source
Subject
*SELECTIVE laser melting
*CORROSION resistance
*TITANIUM composites
*TITANIUM nitride
*MICROSTRUCTURE
*ALUMINUM nitride
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Language
ISSN
0947-5117
Abstract
The aim of this study is to produce Ti–AlN via selective laser melting. The results show that the microstructure of the produced alloy is not uniform. The X‐ray diffraction measurements show that the Ti–AlN composite is composed of a Ti matrix, AlN compounds, as well as (TiN)0.88, Al6Ti19, and Al1.1Ti0.9 intermetallics. The as‐printed Ti–AlN is also composed of dendrites of two typical titanium nitrides (TiN and Ti2N) and titanium aluminum nitride (Ti2AlN). Subsequent quenching and annealing slightly change the phase composition of the alloy and is the main reason for their different corrosion behaviors in acidic and chloride‐containing solutions. The results of this study show that the formation of Al‐rich ternary phases improved the corrosion resistance of the three‐dimensional‐printed Ti–AlN after quenching. [ABSTRACT FROM AUTHOR]