Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La2O3+TiB)/Ti2AlNb composites with a tailored three-dimensional network architecture

Ningbo Zhang; Dongli Sun; Xiuli Han; Ze Wang; Hao Liu; Zhijun Wang; Wenshu Yang; Gaohui Wu

doi:10.1016/j.msea.2019.138769

Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La₂O₃+TiB)/Ti₂AlNb composites with a tailored three-dimensional network architecture

Ningbo Zhang
, Dongli Sun
, Xiuli Han^*
, Ze Wang
, Hao Liu
, Zhijun Wang
, Wenshu Yang
, Gaohui Wu

^*Corresponding author for this work

Harbin Institute of Technology

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

20 Scopus citations

Abstract

The influence of sintering temperatures on the microstructure and properties of network-strengthened (La₂O₃+TiB)/Ti₂AlNb composites were investigated in this study. Microstructural characterization results showed that the reinforced phases comprised of B27-type TiB and La₂O₃ would in-situ form with transition phases disappearing. Also, the TiB held a fixed crystallographic orientation relationship with α₂-Ti₃Al phase. The excess precipitation of α₂, voids and the agglomeration of reinforced phases in prior particle boundaries (PPBs) area were faded away with the sintering temperature increasing. Tensile test results demonstrated the composite sintered at 1250 °C exhibited a superior tensile strength of 1095 and 853 MPa at 25 and 650 °C, respectively. Pores, the agglomeration of the reinforced phases and massive α₂ in PPBs area would promote premature rupture and cause a low tensile strength. When the premature failure was avoided, a high TiB aspect ratio was favorable to strengthening.

Original language	English
Article number	138769
Journal	Materials Science and Engineering: A
Volume	772
DOIs	https://doi.org/10.1016/j.msea.2019.138769
State	Published - 20 Jan 2020
Externally published	Yes

Keywords

Interface
Mechanical properties
Metal-matrix composites
Microstructure evolution
Spark plasma sintering
TiAlNb

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10.1016/j.msea.2019.138769

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Zhang, N., Sun, D., Han, X., Wang, Z., Liu, H., Wang, Z., Yang, W., & Wu, G. (2020). Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La₂O₃+TiB)/Ti₂AlNb composites with a tailored three-dimensional network architecture. Materials Science and Engineering: A, 772, Article 138769. https://doi.org/10.1016/j.msea.2019.138769

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title = "Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La2O3+TiB)/Ti2AlNb composites with a tailored three-dimensional network architecture",

abstract = "The influence of sintering temperatures on the microstructure and properties of network-strengthened (La2O3+TiB)/Ti2AlNb composites were investigated in this study. Microstructural characterization results showed that the reinforced phases comprised of B27-type TiB and La2O3 would in-situ form with transition phases disappearing. Also, the TiB held a fixed crystallographic orientation relationship with α2-Ti3Al phase. The excess precipitation of α2, voids and the agglomeration of reinforced phases in prior particle boundaries (PPBs) area were faded away with the sintering temperature increasing. Tensile test results demonstrated the composite sintered at 1250 °C exhibited a superior tensile strength of 1095 and 853 MPa at 25 and 650 °C, respectively. Pores, the agglomeration of the reinforced phases and massive α2 in PPBs area would promote premature rupture and cause a low tensile strength. When the premature failure was avoided, a high TiB aspect ratio was favorable to strengthening.",

keywords = "Interface, Mechanical properties, Metal-matrix composites, Microstructure evolution, Spark plasma sintering, TiAlNb",

author = "Ningbo Zhang and Dongli Sun and Xiuli Han and Ze Wang and Hao Liu and Zhijun Wang and Wenshu Yang and Gaohui Wu",

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

year = "2020",

month = jan,

day = "20",

doi = "10.1016/j.msea.2019.138769",

language = "英语",

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journal = "Materials Science and Engineering: A",

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publisher = "Elsevier Ltd",

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Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La₂O₃+TiB)/Ti₂AlNb composites with a tailored three-dimensional network architecture. / Zhang, Ningbo; Sun, Dongli; Han, Xiuli et al.
In: Materials Science and Engineering: A, Vol. 772, 138769, 20.01.2020.

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

TY - JOUR

T1 - Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La2O3+TiB)/Ti2AlNb composites with a tailored three-dimensional network architecture

AU - Zhang, Ningbo

AU - Sun, Dongli

AU - Han, Xiuli

AU - Wang, Ze

AU - Liu, Hao

AU - Wang, Zhijun

AU - Yang, Wenshu

AU - Wu, Gaohui

PY - 2020/1/20

Y1 - 2020/1/20

N2 - The influence of sintering temperatures on the microstructure and properties of network-strengthened (La2O3+TiB)/Ti2AlNb composites were investigated in this study. Microstructural characterization results showed that the reinforced phases comprised of B27-type TiB and La2O3 would in-situ form with transition phases disappearing. Also, the TiB held a fixed crystallographic orientation relationship with α2-Ti3Al phase. The excess precipitation of α2, voids and the agglomeration of reinforced phases in prior particle boundaries (PPBs) area were faded away with the sintering temperature increasing. Tensile test results demonstrated the composite sintered at 1250 °C exhibited a superior tensile strength of 1095 and 853 MPa at 25 and 650 °C, respectively. Pores, the agglomeration of the reinforced phases and massive α2 in PPBs area would promote premature rupture and cause a low tensile strength. When the premature failure was avoided, a high TiB aspect ratio was favorable to strengthening.

AB - The influence of sintering temperatures on the microstructure and properties of network-strengthened (La2O3+TiB)/Ti2AlNb composites were investigated in this study. Microstructural characterization results showed that the reinforced phases comprised of B27-type TiB and La2O3 would in-situ form with transition phases disappearing. Also, the TiB held a fixed crystallographic orientation relationship with α2-Ti3Al phase. The excess precipitation of α2, voids and the agglomeration of reinforced phases in prior particle boundaries (PPBs) area were faded away with the sintering temperature increasing. Tensile test results demonstrated the composite sintered at 1250 °C exhibited a superior tensile strength of 1095 and 853 MPa at 25 and 650 °C, respectively. Pores, the agglomeration of the reinforced phases and massive α2 in PPBs area would promote premature rupture and cause a low tensile strength. When the premature failure was avoided, a high TiB aspect ratio was favorable to strengthening.

KW - Interface

KW - Mechanical properties

KW - Metal-matrix composites

KW - Microstructure evolution

KW - Spark plasma sintering

KW - TiAlNb

UR - https://www.scopus.com/pages/publications/85076052220

U2 - 10.1016/j.msea.2019.138769

DO - 10.1016/j.msea.2019.138769

M3 - 文章

AN - SCOPUS:85076052220

SN - 0921-5093

VL - 772

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 138769

ER -

Effect of spark plasma sintering temperatures on microstructure and mechanical properties of in-situ (La₂O₃+TiB)/Ti₂AlNb composites with a tailored three-dimensional network architecture

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