Effect of yttrium on the microstructure of Ti-23Al-25Nb alloy

Yu Feng Si; Yu Yong Chen; Fan Tao Kong; Zi Yong Chen

Effect of yttrium on the microstructure of Ti-23Al-25Nb alloy

Yu Feng Si^*
, Yu Yong Chen
, Fan Tao Kong
, Zi Yong Chen

^*Corresponding author for this work

Harbin Institute of Technology

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

5 Scopus citations

Abstract

The effects of Yttrium on the microstructure of Ti-23Al-25Nb alloy have been studied by OM, XRD, XRF, SEM, EPMA and TEM. The results show that the microstructure of two casting alloys is orthorhombic phase (O-phase). Yttrium has obviously refined the grain size of the alloy, where the Ti-23Al-25Nb grain size within a range of 400-600 μm, and the Ti-23Al-25Nb-0.36Y grain size, within a range of 40-100 μm, refined to about 6-8 times. By BSE and TEM, it is found that the Y₂O₃ lies in the interior of grains and along grain boundary in Ti-23Al-25Nb alloy. Base on the forming mechanism of O-phase and theory of grain refinement, the effects of Yttrium on the refinement process of O-phase have been analyzed.

Original language	English
Pages (from-to)	6-10
Number of pages	5
Journal	Journal of Aeronautical Materials
Volume	26
Issue number	1
State	Published - Feb 2006
Externally published	Yes

Keywords

Microstructure
Refinement grain
Ti-23Al-25Nb alloy
Yttrium

Cite this

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title = "Effect of yttrium on the microstructure of Ti-23Al-25Nb alloy",

abstract = "The effects of Yttrium on the microstructure of Ti-23Al-25Nb alloy have been studied by OM, XRD, XRF, SEM, EPMA and TEM. The results show that the microstructure of two casting alloys is orthorhombic phase (O-phase). Yttrium has obviously refined the grain size of the alloy, where the Ti-23Al-25Nb grain size within a range of 400-600 μm, and the Ti-23Al-25Nb-0.36Y grain size, within a range of 40-100 μm, refined to about 6-8 times. By BSE and TEM, it is found that the Y2O3 lies in the interior of grains and along grain boundary in Ti-23Al-25Nb alloy. Base on the forming mechanism of O-phase and theory of grain refinement, the effects of Yttrium on the refinement process of O-phase have been analyzed.",

keywords = "Microstructure, Refinement grain, Ti-23Al-25Nb alloy, Yttrium",

author = "Si, \{Yu Feng\} and Chen, \{Yu Yong\} and Kong, \{Fan Tao\} and Chen, \{Zi Yong\}",

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T1 - Effect of yttrium on the microstructure of Ti-23Al-25Nb alloy

AU - Si, Yu Feng

AU - Chen, Yu Yong

AU - Kong, Fan Tao

AU - Chen, Zi Yong

PY - 2006/2

Y1 - 2006/2

N2 - The effects of Yttrium on the microstructure of Ti-23Al-25Nb alloy have been studied by OM, XRD, XRF, SEM, EPMA and TEM. The results show that the microstructure of two casting alloys is orthorhombic phase (O-phase). Yttrium has obviously refined the grain size of the alloy, where the Ti-23Al-25Nb grain size within a range of 400-600 μm, and the Ti-23Al-25Nb-0.36Y grain size, within a range of 40-100 μm, refined to about 6-8 times. By BSE and TEM, it is found that the Y2O3 lies in the interior of grains and along grain boundary in Ti-23Al-25Nb alloy. Base on the forming mechanism of O-phase and theory of grain refinement, the effects of Yttrium on the refinement process of O-phase have been analyzed.

AB - The effects of Yttrium on the microstructure of Ti-23Al-25Nb alloy have been studied by OM, XRD, XRF, SEM, EPMA and TEM. The results show that the microstructure of two casting alloys is orthorhombic phase (O-phase). Yttrium has obviously refined the grain size of the alloy, where the Ti-23Al-25Nb grain size within a range of 400-600 μm, and the Ti-23Al-25Nb-0.36Y grain size, within a range of 40-100 μm, refined to about 6-8 times. By BSE and TEM, it is found that the Y2O3 lies in the interior of grains and along grain boundary in Ti-23Al-25Nb alloy. Base on the forming mechanism of O-phase and theory of grain refinement, the effects of Yttrium on the refinement process of O-phase have been analyzed.

KW - Microstructure

KW - Refinement grain

KW - Ti-23Al-25Nb alloy

KW - Yttrium

UR - https://www.scopus.com/pages/publications/33644961822

M3 - 文章

AN - SCOPUS:33644961822

SN - 1005-5053

VL - 26

SP - 6

EP - 10

JO - Journal of Aeronautical Materials

JF - Journal of Aeronautical Materials

IS - 1

ER -

Effect of yttrium on the microstructure of Ti-23Al-25Nb alloy

Abstract

Keywords

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