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Assessment of Nanomechanical and Tribological Performance of Refractory Nitride-Reinforced Titanium Alloy Matrix Composites Developed by Spark Plasma Sintering
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Assessment of Nanomechanical and Tribological Performance of Refractory Nitride-Reinforced Titanium Alloy Matrix Composites Developed by Spark Plasma Sintering
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Assessment of Nanomechanical and Tribological Performance of Refractory Nitride-Reinforced Titanium Alloy Matrix Composites Developed by Spark Plasma Sintering
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Journal Article
Assessment of Nanomechanical and Tribological Performance of Refractory Nitride-Reinforced Titanium Alloy Matrix Composites Developed by Spark Plasma Sintering
2023
Overview
The dual-phase titanium alloy Ti6Al4V, presents overall top performance for most-used weight reduction titanium alloy usage in aerospace production, but its general applications have not been fully realized because its resistance to local plastic deformation, friction and wear are unsatisfactory. In a bid to enhance the known shortcomings, Ti6Al4V matrix composites (TMCs) with advanced refractory nitride reinforcements were synthesized by spark plasma sintering. The effects of single (3 wt.%) and double (1.5 wt.% each) reinforcements of nanograde hexagonal boron nitride (
h
-BN), titanium nitride (TiN) and aluminium nitride (AlN) on the microstructure, phase constituents, nanomechanical and tribological performance of the sintered TMCs were investigated. Microstructure and phase analyses showed that sintered TMCs consist of crack-free microstructures with practically no notable visible defects or impairing intermetallic phases, suggesting that no adverse particle–matrix interfacial reactions occurred during sintering. Nanoindentation and tribology tests generally revealed remarkable improvements in hardness, elastic modulus and wear resistance through each reinforcement type on the sintered TMCs in decreasing order of influence from 3 wt.%
h
-BN, to 1.5 wt.% of
h
-BN and AlN, followed by 1.5 wt.% of
h
-BN and TiN, then 1.5 wt.% of TiN and AlN, to 3 wt.% AlN and finally, 3 wt.% TiN.
Publisher
Springer US,Springer Nature B.V
