Characteristics of the Nial/Ni3al Matrix Composite With Tib2 Particles Fabricated By High Pressure – High Temperature Sintering

The article presents the results of tests carried out on the manufactured composite materials based on a two-phase NiAl/Ni3Al matrix, which was enriched with the addition of TiB2 ceramic particles added in an amount of 4 and 7 vol%. The resulting mixtures were sintered by the High Pressure High Temp...

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Bibliographic Details
Main Authors: Hyjek P., Sulima I., Jaworska L.
Format: Article
Language:English
Published: Polish Academy of Sciences 2017-09-01
Series:Archives of Metallurgy and Materials
Subjects:
Online Access:http://www.degruyter.com/view/j/amm.2017.62.issue-3/amm-2017-0234/amm-2017-0234.xml?format=INT
Description
Summary:The article presents the results of tests carried out on the manufactured composite materials based on a two-phase NiAl/Ni3Al matrix, which was enriched with the addition of TiB2 ceramic particles added in an amount of 4 and 7 vol%. The resulting mixtures were sintered by the High Pressure High Temperature (HP-HT) process. The results were compared to the results obtained for the sole matrix material produced under the same conditions. It has been shown that, at a lower density, the addition of reinforcing particles increases the composite hardness, Young’s modulus and resistance to frictional wear. However, higher addition of TiB2 (7 vol%) was observed to yield less satisfactory results, and despite higher hardness and lower density caused a decrease in other properties tested. The produced materials were characterized by a compact and highly differentiated microstructure free from any noticeable cracks and pores.
ISSN:2300-1909