Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti2AlC at the interface of α2 and γ lamellae

Yupeng Wang; Chengze Liu; Tengfei Ma; Yue Liu; Yusheng Zhang; Lian Zhou

doi:10.1016/j.corsci.2022.110639

Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti₂AlC at the interface of α₂ and γ lamellae

Yupeng Wang, Chengze Liu, Tengfei Ma, Yue Liu, Yusheng Zhang, Lian Zhou

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摘要

Herein, in-situ sintered micro-nano Ti₂AlC/TiAl composite with fully lamellar structures were designed by spark plasma sintering to improve the high-temperature oxidation resistance of TiAl alloys. The Ti₂AlC/TiAl composite exhibited lower oxidation rate and thinner oxide scale enriched Al₂O₃ compared to TiAl alloy after 750 ℃ and 850 ℃ oxidation, suggesting that oxidation resistance of the Ti₂AlC/TiAl composite was improved. The superior oxidation resistance of the Ti₂AlC/TiAl composite was mainly attributed to Ti₂AlC particles hindered the diffusion of O atoms and stabilized the Al-rich oxide layer by the formation of more Ti-Al-N layers due to the nitridation susceptibility of Ti₂AlC.

源语言	英语
文章编号	110639
期刊	Corrosion Science
卷	208
DOI	https://doi.org/10.1016/j.corsci.2022.110639
出版状态	已出版 - 11月 2022
已对外发布	是

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10.1016/j.corsci.2022.110639

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title = "Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti2AlC at the interface of α2 and γ lamellae",

abstract = "Herein, in-situ sintered micro-nano Ti2AlC/TiAl composite with fully lamellar structures were designed by spark plasma sintering to improve the high-temperature oxidation resistance of TiAl alloys. The Ti2AlC/TiAl composite exhibited lower oxidation rate and thinner oxide scale enriched Al2O3 compared to TiAl alloy after 750 ℃ and 850 ℃ oxidation, suggesting that oxidation resistance of the Ti2AlC/TiAl composite was improved. The superior oxidation resistance of the Ti2AlC/TiAl composite was mainly attributed to Ti2AlC particles hindered the diffusion of O atoms and stabilized the Al-rich oxide layer by the formation of more Ti-Al-N layers due to the nitridation susceptibility of Ti2AlC.",

keywords = "Composites, Oxidation, SPS, TiAl alloy",

author = "Yupeng Wang and Chengze Liu and Tengfei Ma and Yue Liu and Yusheng Zhang and Lian Zhou",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = nov,

doi = "10.1016/j.corsci.2022.110639",

language = "英语",

volume = "208",

journal = "Corrosion Science",

issn = "0010-938X",

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TY - JOUR

T1 - Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti2AlC at the interface of α2 and γ lamellae

AU - Wang, Yupeng

AU - Liu, Chengze

AU - Ma, Tengfei

AU - Liu, Yue

AU - Zhang, Yusheng

AU - Zhou, Lian

PY - 2022/11

Y1 - 2022/11

N2 - Herein, in-situ sintered micro-nano Ti2AlC/TiAl composite with fully lamellar structures were designed by spark plasma sintering to improve the high-temperature oxidation resistance of TiAl alloys. The Ti2AlC/TiAl composite exhibited lower oxidation rate and thinner oxide scale enriched Al2O3 compared to TiAl alloy after 750 ℃ and 850 ℃ oxidation, suggesting that oxidation resistance of the Ti2AlC/TiAl composite was improved. The superior oxidation resistance of the Ti2AlC/TiAl composite was mainly attributed to Ti2AlC particles hindered the diffusion of O atoms and stabilized the Al-rich oxide layer by the formation of more Ti-Al-N layers due to the nitridation susceptibility of Ti2AlC.

AB - Herein, in-situ sintered micro-nano Ti2AlC/TiAl composite with fully lamellar structures were designed by spark plasma sintering to improve the high-temperature oxidation resistance of TiAl alloys. The Ti2AlC/TiAl composite exhibited lower oxidation rate and thinner oxide scale enriched Al2O3 compared to TiAl alloy after 750 ℃ and 850 ℃ oxidation, suggesting that oxidation resistance of the Ti2AlC/TiAl composite was improved. The superior oxidation resistance of the Ti2AlC/TiAl composite was mainly attributed to Ti2AlC particles hindered the diffusion of O atoms and stabilized the Al-rich oxide layer by the formation of more Ti-Al-N layers due to the nitridation susceptibility of Ti2AlC.

KW - Composites

KW - Oxidation

KW - SPS

KW - TiAl alloy

UR - http://www.scopus.com/inward/record.url?scp=85137627701&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2022.110639

DO - 10.1016/j.corsci.2022.110639

M3 - 文章

AN - SCOPUS:85137627701

SN - 0010-938X

VL - 208

JO - Corrosion Science

JF - Corrosion Science

M1 - 110639

ER -

Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti2AlC at the interface of α2 and γ lamellae

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Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti₂AlC at the interface of α₂ and γ lamellae