Ultrafine TiB2-TiNiFeCrCoAl high-entropy alloy composite with enhanced mechanical properties

Zhezhen Fu; Rasit Koc

doi:10.1016/j.msea.2017.07.008

Ultrafine TiB₂-TiNiFeCrCoAl high-entropy alloy composite with enhanced mechanical properties

Zhezhen Fu, Rasit Koc

School of Science, Engineering & Technology (Harrisburg)

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

55 Scopus citations

Abstract

This paper introduces a novel TiB₂−10 wt% TiNiFeCrCoAl high-entropy alloy (HEA) composite with an enhanced hardness and indentation fracture toughness. Comparing with the traditional TiB₂-Ni composite, the addition of TiNiFeCrCoAl HEA can remove the oxide impurities in TiB₂ to enhance the sintered density; and decrease the solubility of TiB₂ in HEA and the solid-liquid surface energy to inhibit the grain growth. The further observation on the microstructure shows the hardening is due to the fine grain size and high contiguity; and the toughening can be attributed to the crack deflection, branching, bridging, and grain pull-out.

Original language	English (US)
Pages (from-to)	184-188
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	702
DOIs	https://doi.org/10.1016/j.msea.2017.07.008
State	Published - Aug 15 2017

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2017.07.008

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title = "Ultrafine TiB2-TiNiFeCrCoAl high-entropy alloy composite with enhanced mechanical properties",

abstract = "This paper introduces a novel TiB2−10 wt% TiNiFeCrCoAl high-entropy alloy (HEA) composite with an enhanced hardness and indentation fracture toughness. Comparing with the traditional TiB2-Ni composite, the addition of TiNiFeCrCoAl HEA can remove the oxide impurities in TiB2 to enhance the sintered density; and decrease the solubility of TiB2 in HEA and the solid-liquid surface energy to inhibit the grain growth. The further observation on the microstructure shows the hardening is due to the fine grain size and high contiguity; and the toughening can be attributed to the crack deflection, branching, bridging, and grain pull-out.",

author = "Zhezhen Fu and Rasit Koc",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.msea.2017.07.008",

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AU - Fu, Zhezhen

AU - Koc, Rasit

PY - 2017/8/15

Y1 - 2017/8/15

N2 - This paper introduces a novel TiB2−10 wt% TiNiFeCrCoAl high-entropy alloy (HEA) composite with an enhanced hardness and indentation fracture toughness. Comparing with the traditional TiB2-Ni composite, the addition of TiNiFeCrCoAl HEA can remove the oxide impurities in TiB2 to enhance the sintered density; and decrease the solubility of TiB2 in HEA and the solid-liquid surface energy to inhibit the grain growth. The further observation on the microstructure shows the hardening is due to the fine grain size and high contiguity; and the toughening can be attributed to the crack deflection, branching, bridging, and grain pull-out.

AB - This paper introduces a novel TiB2−10 wt% TiNiFeCrCoAl high-entropy alloy (HEA) composite with an enhanced hardness and indentation fracture toughness. Comparing with the traditional TiB2-Ni composite, the addition of TiNiFeCrCoAl HEA can remove the oxide impurities in TiB2 to enhance the sintered density; and decrease the solubility of TiB2 in HEA and the solid-liquid surface energy to inhibit the grain growth. The further observation on the microstructure shows the hardening is due to the fine grain size and high contiguity; and the toughening can be attributed to the crack deflection, branching, bridging, and grain pull-out.

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JO - Materials Science and Engineering: A

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Ultrafine TiB₂-TiNiFeCrCoAl high-entropy alloy composite with enhanced mechanical properties

Abstract

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