Effect of Y2O3 content on the microstructure and mechanical properties of ta-Y2O3 composites

Longhao Yang; Lei Chen; Xuming Lv; Kunxuan Li; Yongtao Liu; Yuxuan Cheng; Yunhan Zhang; Sijia Huo; Yujin Wang

doi:10.1016/j.ijrmhm.2026.108037

Effect of Y₂O₃ content on the microstructure and mechanical properties of ta-Y₂O₃ composites

Longhao Yang
, Lei Chen^*
, Xuming Lv^*
, Kunxuan Li
, Yongtao Liu
, Yuxuan Cheng
, Yunhan Zhang
, Sijia Huo
, Yujin Wang

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology
National Key Laboratory of Particle Transport and Separation Technology

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

Abstract

Ta-based composites with different Y₂O₃ contents have been synthesized by hot-pressing sintering. The microstructural evolution, mechanical properties, and plastic deformation behavior of Ta-Y₂O₃ composites are systematically investigated. The addition of Y₂O₃ effectively inhibits Ta grain-boundary migration and further refine grain size. Statistical analysis of the size, morphology, and inter-particle spacing of the second-phase particles reveals the influence of Y₂O₃ content on microstructural development. Compared with pure Ta fabricated by common hot-pressing sintering, the fracture mode changed from intergranular brittle fracture to dimple-dominated ductile fracture, indicating significantly improved plasticity. The Ta-3 vol% Y₂O₃ composite possesses the high yield strength and tensile strength, reaching 450 ± 27 MPa and 578 ± 25 MPa, while the Ta-5 vol% Y₂O₃ composite exhibits the maximum elongation of 25.3 ± 1.6%.

Original language	English
Article number	108037
Journal	International Journal of Refractory Metals and Hard Materials
Volume	141
DOIs	https://doi.org/10.1016/j.ijrmhm.2026.108037
State	Published - Dec 2026

Keywords

Mechanical properties
Microstructure
Plastic deformation
Ta-YOcomposites

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10.1016/j.ijrmhm.2026.108037

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title = "Effect of Y2O3 content on the microstructure and mechanical properties of ta-Y2O3 composites",

abstract = "Ta-based composites with different Y2O3 contents have been synthesized by hot-pressing sintering. The microstructural evolution, mechanical properties, and plastic deformation behavior of Ta-Y2O3 composites are systematically investigated. The addition of Y2O3 effectively inhibits Ta grain-boundary migration and further refine grain size. Statistical analysis of the size, morphology, and inter-particle spacing of the second-phase particles reveals the influence of Y2O3 content on microstructural development. Compared with pure Ta fabricated by common hot-pressing sintering, the fracture mode changed from intergranular brittle fracture to dimple-dominated ductile fracture, indicating significantly improved plasticity. The Ta-3 vol\% Y2O3 composite possesses the high yield strength and tensile strength, reaching 450 ± 27 MPa and 578 ± 25 MPa, while the Ta-5 vol\% Y2O3 composite exhibits the maximum elongation of 25.3 ± 1.6\%.",

keywords = "Mechanical properties, Microstructure, Plastic deformation, Ta-YOcomposites",

author = "Longhao Yang and Lei Chen and Xuming Lv and Kunxuan Li and Yongtao Liu and Yuxuan Cheng and Yunhan Zhang and Sijia Huo and Yujin Wang",

note = "Publisher Copyright: {\textcopyright} 2026 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.",

year = "2026",

month = dec,

doi = "10.1016/j.ijrmhm.2026.108037",

language = "英语",

volume = "141",

journal = "International Journal of Refractory Metals and Hard Materials",

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TY - JOUR

T1 - Effect of Y2O3 content on the microstructure and mechanical properties of ta-Y2O3 composites

AU - Yang, Longhao

AU - Chen, Lei

AU - Lv, Xuming

AU - Li, Kunxuan

AU - Liu, Yongtao

AU - Cheng, Yuxuan

AU - Zhang, Yunhan

AU - Huo, Sijia

AU - Wang, Yujin

PY - 2026/12

Y1 - 2026/12

N2 - Ta-based composites with different Y2O3 contents have been synthesized by hot-pressing sintering. The microstructural evolution, mechanical properties, and plastic deformation behavior of Ta-Y2O3 composites are systematically investigated. The addition of Y2O3 effectively inhibits Ta grain-boundary migration and further refine grain size. Statistical analysis of the size, morphology, and inter-particle spacing of the second-phase particles reveals the influence of Y2O3 content on microstructural development. Compared with pure Ta fabricated by common hot-pressing sintering, the fracture mode changed from intergranular brittle fracture to dimple-dominated ductile fracture, indicating significantly improved plasticity. The Ta-3 vol% Y2O3 composite possesses the high yield strength and tensile strength, reaching 450 ± 27 MPa and 578 ± 25 MPa, while the Ta-5 vol% Y2O3 composite exhibits the maximum elongation of 25.3 ± 1.6%.

AB - Ta-based composites with different Y2O3 contents have been synthesized by hot-pressing sintering. The microstructural evolution, mechanical properties, and plastic deformation behavior of Ta-Y2O3 composites are systematically investigated. The addition of Y2O3 effectively inhibits Ta grain-boundary migration and further refine grain size. Statistical analysis of the size, morphology, and inter-particle spacing of the second-phase particles reveals the influence of Y2O3 content on microstructural development. Compared with pure Ta fabricated by common hot-pressing sintering, the fracture mode changed from intergranular brittle fracture to dimple-dominated ductile fracture, indicating significantly improved plasticity. The Ta-3 vol% Y2O3 composite possesses the high yield strength and tensile strength, reaching 450 ± 27 MPa and 578 ± 25 MPa, while the Ta-5 vol% Y2O3 composite exhibits the maximum elongation of 25.3 ± 1.6%.

KW - Mechanical properties

KW - Microstructure

KW - Plastic deformation

KW - Ta-YOcomposites

UR - https://www.scopus.com/pages/publications/105047100639

U2 - 10.1016/j.ijrmhm.2026.108037

DO - 10.1016/j.ijrmhm.2026.108037

M3 - 文章

AN - SCOPUS:105047100639

SN - 0263-4368

VL - 141

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

M1 - 108037

ER -

Effect of Y₂O₃ content on the microstructure and mechanical properties of ta-Y₂O₃ composites

Abstract

Keywords

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