Microstructure, mechanical properties and high temperature tribological behavior of NiAl-based composites

Bo Li; Hongjian Guo; Cong Li; Yimin Gao; Lihan Feng; Yinglong Pan; Chenyu Liang

Journal of Materials Research and Technology (Sep 2022)

Microstructure, mechanical properties and high temperature tribological behavior of NiAl-based composites

Bo Li,
Hongjian Guo,
Cong Li,
Yimin Gao,
Lihan Feng,
Yinglong Pan,
Chenyu Liang

Affiliations

Bo Li: State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China; Corresponding author.
Hongjian Guo: School of Bailie Mechanical Engineering, Lanzhou City University, Lanzhou, People's Republic of China
Cong Li: State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China; Corresponding author.
Yimin Gao: State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
Lihan Feng: State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
Yinglong Pan: State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
Chenyu Liang: Instrumental Analysis Center of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, People's Republic of China

Journal volume & issue: Vol. 20
pp. 3255 – 3263

Abstract

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NiAl-based composites were fabricated in-situ using vacuum hot-press sintering technology. The Ti3AlC2, TiC and Ti3Al were formed during the sintering process, and the intensity of peaks grow higher with the addition of Al, Ti and C powder contents, respectively. The microhardness of the composites was significantly improved by adding these powders and gradually increased with the incremental content of Al, Ti and C powders. Meanwhile, the tribological properties of the composites at high temperature were also improved. The worn surface formed during the tribo-oxidation reactions and produced the glaze film in the high-temperature friction process, which could improve the composites' tribological properties. The TiO2 and Al2O3 phases were observed on the worn surface after the friction test, which could act as a high-temperature lubricant and improve the composites’ tribological properties.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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