Effect of Y2O3 addition on microstructure and mechanical properties of spark plasma sintered AlMgB14 and AlMgB14-TiB2

Owing to great hardness and low friction coefficients on steel, AlMgB14 has several potential applications in the fields of cutting tools and wear-resistant materials. In the current work, the effect of Y2O3 addition on the mechanical properties and microstructure of spark plasma sintered AlMgB14 an...

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Bibliographic Details
Published inCeramics international Vol. 44; no. 7; pp. 8591 - 8598
Main Authors Zhou, Y.M., Zhang, T., Xu, K., Zhang, F.L., Bai, K., Huang, H.P., Wu, S.H., Luo, S.M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2018
Subjects
AlMgB14
AlMgB14-TiB2
Mechanical properties
Microstructure
Y2O3
AlMgB14-TiB2
Mechanical properties
Y2O3
Microstructure
AlMgB14
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Summary:Owing to great hardness and low friction coefficients on steel, AlMgB14 has several potential applications in the fields of cutting tools and wear-resistant materials. In the current work, the effect of Y2O3 addition on the mechanical properties and microstructure of spark plasma sintered AlMgB14 and AlMgB14-TiB2 has been investigated. An increase in the amount of Y2O3 led to an increase in the number of secondary phases including MgAl2O4 and Y2O3 in AlMgB14 matrix. The addition of Y2O3 led to a refinement in the grain size of AlMgB14 and AlMgB14-TiB2; however, simultaneously increased the porosity. With the addition of 3 wt% Y2O3, both AlMgB14 and AlMgB14-TiB2 reached the finest grain size and the highest hardness while maintaining a low porosity.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2018.02.073