Influence of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys

Yingfei Guo; Yuyong Chen; Shulong Xiao; Jing Tian; Zhuangzhuang Zheng; Lijuan Xu

doi:10.1016/j.msea.2020.139803

Influence of nano-Y₂O₃ addition on microstructure and tensile properties of high-Al TiAl alloys

Yingfei Guo
, Yuyong Chen^*
, Shulong Xiao^*
, Jing Tian
, Zhuangzhuang Zheng
, Lijuan Xu

^*Corresponding author for this work

School of Materials Science and Engineering

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

62 Scopus citations

Abstract

The effect of nano-Y₂O₃ addition on microstructure and tensile properties of high-Al TiAl alloys prepared by induction skull melting is investigated. The result shows that the addition of nano-Y₂O₃ affords an obvious refinement in lamellar colony due to the heterogeneous nucleation. A crystallographic model is used to predict the α and γ nucleation potencies of Y₂O₃ particles during solidification. Besides, Y₂O₃ induces the solidification pathway of TiAl alloys into high-Al side, resulting in the increase of γ phase. Owing to fine grain strengthening and second phase strengthening, the tensile strength and elongation of TiAl–Y₂O₃ alloys are enhanced significantly at room temperature.

Original language	English
Article number	139803
Journal	Materials Science and Engineering: A
Volume	794
DOIs	https://doi.org/10.1016/j.msea.2020.139803
State	Published - 9 Sep 2020

Keywords

Edge-to-Edge matching model
Microstructure
Tensile properties
TiAl alloy
YO

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10.1016/j.msea.2020.139803

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title = "Influence of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys",

abstract = "The effect of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys prepared by induction skull melting is investigated. The result shows that the addition of nano-Y2O3 affords an obvious refinement in lamellar colony due to the heterogeneous nucleation. A crystallographic model is used to predict the α and γ nucleation potencies of Y2O3 particles during solidification. Besides, Y2O3 induces the solidification pathway of TiAl alloys into high-Al side, resulting in the increase of γ phase. Owing to fine grain strengthening and second phase strengthening, the tensile strength and elongation of TiAl–Y2O3 alloys are enhanced significantly at room temperature.",

keywords = "Edge-to-Edge matching model, Microstructure, Tensile properties, TiAl alloy, YO",

author = "Yingfei Guo and Yuyong Chen and Shulong Xiao and Jing Tian and Zhuangzhuang Zheng and Lijuan Xu",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

day = "9",

doi = "10.1016/j.msea.2020.139803",

language = "英语",

volume = "794",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Influence of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys

AU - Guo, Yingfei

AU - Chen, Yuyong

AU - Xiao, Shulong

AU - Tian, Jing

AU - Zheng, Zhuangzhuang

AU - Xu, Lijuan

PY - 2020/9/9

Y1 - 2020/9/9

N2 - The effect of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys prepared by induction skull melting is investigated. The result shows that the addition of nano-Y2O3 affords an obvious refinement in lamellar colony due to the heterogeneous nucleation. A crystallographic model is used to predict the α and γ nucleation potencies of Y2O3 particles during solidification. Besides, Y2O3 induces the solidification pathway of TiAl alloys into high-Al side, resulting in the increase of γ phase. Owing to fine grain strengthening and second phase strengthening, the tensile strength and elongation of TiAl–Y2O3 alloys are enhanced significantly at room temperature.

AB - The effect of nano-Y2O3 addition on microstructure and tensile properties of high-Al TiAl alloys prepared by induction skull melting is investigated. The result shows that the addition of nano-Y2O3 affords an obvious refinement in lamellar colony due to the heterogeneous nucleation. A crystallographic model is used to predict the α and γ nucleation potencies of Y2O3 particles during solidification. Besides, Y2O3 induces the solidification pathway of TiAl alloys into high-Al side, resulting in the increase of γ phase. Owing to fine grain strengthening and second phase strengthening, the tensile strength and elongation of TiAl–Y2O3 alloys are enhanced significantly at room temperature.

KW - Edge-to-Edge matching model

KW - Microstructure

KW - Tensile properties

KW - TiAl alloy

KW - YO

UR - https://www.scopus.com/pages/publications/85088742674

U2 - 10.1016/j.msea.2020.139803

DO - 10.1016/j.msea.2020.139803

M3 - 文章

AN - SCOPUS:85088742674

SN - 0921-5093

VL - 794

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 139803

ER -

Influence of nano-Y₂O₃ addition on microstructure and tensile properties of high-Al TiAl alloys

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Keywords

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