Effects of nano-Y2O3 addition on the microstructure evolution and tensile properties of a near-α titanium alloy

Jianhui Yang; Shulong Xiao; Chen Yuyong; Lijuan Xu; Xiaopeng Wang; Dongdong Zhang; Mingao Li

doi:10.1016/j.msea.2019.05.107

Effects of nano-Y₂O₃ addition on the microstructure evolution and tensile properties of a near-α titanium alloy

Jianhui Yang
, Shulong Xiao^*
, Chen Yuyong
, Lijuan Xu
, Xiaopeng Wang
, Dongdong Zhang
, Mingao Li

^*Corresponding author for this work

Harbin Institute of Technology
Harbin Institute of Technology

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

66 Scopus citations

Abstract

Reactive element oxide (REO) can significantly refine cast microstructure and improve mechanical properties. In this study, Y₂O₃ nanoparticles (∼30 nm) were added into a near-α titanium alloy by vacuum arc melting furnace. The nano-Y₂O₃ grew into dendritic and near-equiaxed Y₂O₃ crystals because of segregation in the solution. Apart from refined β grain size, Y₂O₃ particles also coarsened the needle α lamellar (α_s) by providing supernumerary nucleation sites for α_s in subsequent β→α_s transformation. Owing to the load transfer mechanisms, ultimate tensile strength and yield strength were evidently enhanced either at room or elevated temperature. The theoretical strengthening model of Y2O3/near-α-Ti alloy matched the experimental values well.

Original language	English
Article number	137977
Journal	Materials Science and Engineering: A
Volume	761
DOIs	https://doi.org/10.1016/j.msea.2019.05.107
State	Published - 22 Jul 2019
Externally published	Yes

Keywords

Mechanical properties
Microstructure evolution
Near-α titanium alloy
Strength mechanism
YO

Access to Document

10.1016/j.msea.2019.05.107

Cite this

@article{c8a5cb8a8c574dec9a946d5eb28fb1a3,

title = "Effects of nano-Y2O3 addition on the microstructure evolution and tensile properties of a near-α titanium alloy",

abstract = "Reactive element oxide (REO) can significantly refine cast microstructure and improve mechanical properties. In this study, Y2O3 nanoparticles (∼30 nm) were added into a near-α titanium alloy by vacuum arc melting furnace. The nano-Y2O3 grew into dendritic and near-equiaxed Y2O3 crystals because of segregation in the solution. Apart from refined β grain size, Y2O3 particles also coarsened the needle α lamellar (αs) by providing supernumerary nucleation sites for αs in subsequent β→αs transformation. Owing to the load transfer mechanisms, ultimate tensile strength and yield strength were evidently enhanced either at room or elevated temperature. The theoretical strengthening model of Y2O3/near-α-Ti alloy matched the experimental values well.",

keywords = "Mechanical properties, Microstructure evolution, Near-α titanium alloy, Strength mechanism, YO",

author = "Jianhui Yang and Shulong Xiao and Chen Yuyong and Lijuan Xu and Xiaopeng Wang and Dongdong Zhang and Mingao Li",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = jul,

day = "22",

doi = "10.1016/j.msea.2019.05.107",

language = "英语",

volume = "761",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effects of nano-Y2O3 addition on the microstructure evolution and tensile properties of a near-α titanium alloy

AU - Yang, Jianhui

AU - Xiao, Shulong

AU - Yuyong, Chen

AU - Xu, Lijuan

AU - Wang, Xiaopeng

AU - Zhang, Dongdong

AU - Li, Mingao

PY - 2019/7/22

Y1 - 2019/7/22

N2 - Reactive element oxide (REO) can significantly refine cast microstructure and improve mechanical properties. In this study, Y2O3 nanoparticles (∼30 nm) were added into a near-α titanium alloy by vacuum arc melting furnace. The nano-Y2O3 grew into dendritic and near-equiaxed Y2O3 crystals because of segregation in the solution. Apart from refined β grain size, Y2O3 particles also coarsened the needle α lamellar (αs) by providing supernumerary nucleation sites for αs in subsequent β→αs transformation. Owing to the load transfer mechanisms, ultimate tensile strength and yield strength were evidently enhanced either at room or elevated temperature. The theoretical strengthening model of Y2O3/near-α-Ti alloy matched the experimental values well.

AB - Reactive element oxide (REO) can significantly refine cast microstructure and improve mechanical properties. In this study, Y2O3 nanoparticles (∼30 nm) were added into a near-α titanium alloy by vacuum arc melting furnace. The nano-Y2O3 grew into dendritic and near-equiaxed Y2O3 crystals because of segregation in the solution. Apart from refined β grain size, Y2O3 particles also coarsened the needle α lamellar (αs) by providing supernumerary nucleation sites for αs in subsequent β→αs transformation. Owing to the load transfer mechanisms, ultimate tensile strength and yield strength were evidently enhanced either at room or elevated temperature. The theoretical strengthening model of Y2O3/near-α-Ti alloy matched the experimental values well.

KW - Mechanical properties

KW - Microstructure evolution

KW - Near-α titanium alloy

KW - Strength mechanism

KW - YO

UR - https://www.scopus.com/pages/publications/85067815437

U2 - 10.1016/j.msea.2019.05.107

DO - 10.1016/j.msea.2019.05.107

M3 - 文章

AN - SCOPUS:85067815437

SN - 0921-5093

VL - 761

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 137977

ER -

Effects of nano-Y₂O₃ addition on the microstructure evolution and tensile properties of a near-α titanium alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this