Effect of TiB2 addition on the elevated temperature tribological behavior of spark plasma sintered Ti matrix composite

Abbas Sabahi Namini; Shaikh Asad Ali Dilawary; Amir Motallebzadeh; Mehdi Shahedi Asl

doi:10.1016/j.compositesb.2019.05.073

Effect of TiB₂ addition on the elevated temperature tribological behavior of spark plasma sintered Ti matrix composite

Abbas Sabahi Namini, Shaikh Asad Ali Dilawary, Amir Motallebzadeh, Mehdi Shahedi Asl^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

111 Citations (Scopus)

Abstract

The study aims at the investigation of the high temperature tribological behavior for in situ synthesized Ti–TiB composite and reports thorough characterization of worn surfaces to understand the operative wear mechanisms to clarify the controversial role of tribo-oxide formation in Ti alloys. Therefore monolithic CpTi and CpTi+9.6 wt% TiB₂ composite specimens were fabricated by spark plasma sintering. Microstructural and phase analyses verified the in situ formation of TiB whiskers in the composite specimens and an enhancement in hardness. The dry sliding wear behavior of composites was better than CpTi, across all testing temperatures, thanks to better hardness and the formation of adherent and thicker tribo-oxide layer.

Original language	English
Pages (from-to)	271-280
Number of pages	10
Journal	Composites Part B: Engineering
Volume	172
DOIs	https://doi.org/10.1016/j.compositesb.2019.05.073
Publication status	Published - 1 Sept 2019
Externally published	Yes

Keywords

Hardness
Sliding wear
Spark plasma sintering
TiB additive
Titanium matrix composite

Access to Document

10.1016/j.compositesb.2019.05.073

Cite this

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title = "Effect of TiB2 addition on the elevated temperature tribological behavior of spark plasma sintered Ti matrix composite",

abstract = "The study aims at the investigation of the high temperature tribological behavior for in situ synthesized Ti–TiB composite and reports thorough characterization of worn surfaces to understand the operative wear mechanisms to clarify the controversial role of tribo-oxide formation in Ti alloys. Therefore monolithic CpTi and CpTi+9.6 wt% TiB2 composite specimens were fabricated by spark plasma sintering. Microstructural and phase analyses verified the in situ formation of TiB whiskers in the composite specimens and an enhancement in hardness. The dry sliding wear behavior of composites was better than CpTi, across all testing temperatures, thanks to better hardness and the formation of adherent and thicker tribo-oxide layer.",

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AU - Sabahi Namini, Abbas

AU - Dilawary, Shaikh Asad Ali

AU - Motallebzadeh, Amir

AU - Shahedi Asl, Mehdi

PY - 2019/9/1

Y1 - 2019/9/1

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AB - The study aims at the investigation of the high temperature tribological behavior for in situ synthesized Ti–TiB composite and reports thorough characterization of worn surfaces to understand the operative wear mechanisms to clarify the controversial role of tribo-oxide formation in Ti alloys. Therefore monolithic CpTi and CpTi+9.6 wt% TiB2 composite specimens were fabricated by spark plasma sintering. Microstructural and phase analyses verified the in situ formation of TiB whiskers in the composite specimens and an enhancement in hardness. The dry sliding wear behavior of composites was better than CpTi, across all testing temperatures, thanks to better hardness and the formation of adherent and thicker tribo-oxide layer.

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KW - Spark plasma sintering

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