Microstructural refinement and mechanical properties of Y-bearing TiAl alloys

Y. Y. Chen; B. H. Li; F. T. Kong

doi:10.1016/j.jallcom.2007.03.050

Microstructural refinement and mechanical properties of Y-bearing TiAl alloys

Y. Y. Chen
, B. H. Li^*
, F. T. Kong

^*Corresponding author for this work

Harbin Institute of Technology

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

70 Scopus citations

Abstract

The as-cast microstructures and tensile properties of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys were studied. With the addition of Y, YAl₂ phase forms mainly along the lamellar colony boundaries as rounded or elongated particles and slightly inner the colonies as the finer particles. The microstructure of Ti-45Al-5Nb-0.3Y alloy is remarkably refined, including the lamellar colony size and lamellar spacing, compared with that of Ti-45Al-5Nb alloy. The tensile strength and ductility of Ti-45Al-5Nb-0.3Y alloy at room temperature are improved. The improvement of the Y-bearing TiAl alloy is mainly the superposition of the fine colony grain size and lamellar spacing.

Original language	English
Pages (from-to)	265-269
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	457
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.03.050
State	Published - 12 Jun 2008
Externally published	Yes

Keywords

Casting
Intermetallics
Mechanical properties
Microstructure

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10.1016/j.jallcom.2007.03.050

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title = "Microstructural refinement and mechanical properties of Y-bearing TiAl alloys",

abstract = "The as-cast microstructures and tensile properties of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys were studied. With the addition of Y, YAl2 phase forms mainly along the lamellar colony boundaries as rounded or elongated particles and slightly inner the colonies as the finer particles. The microstructure of Ti-45Al-5Nb-0.3Y alloy is remarkably refined, including the lamellar colony size and lamellar spacing, compared with that of Ti-45Al-5Nb alloy. The tensile strength and ductility of Ti-45Al-5Nb-0.3Y alloy at room temperature are improved. The improvement of the Y-bearing TiAl alloy is mainly the superposition of the fine colony grain size and lamellar spacing.",

keywords = "Casting, Intermetallics, Mechanical properties, Microstructure",

author = "Chen, \{Y. Y.\} and Li, \{B. H.\} and Kong, \{F. T.\}",

year = "2008",

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day = "12",

doi = "10.1016/j.jallcom.2007.03.050",

language = "英语",

volume = "457",

pages = "265--269",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Microstructural refinement and mechanical properties of Y-bearing TiAl alloys

AU - Chen, Y. Y.

AU - Li, B. H.

AU - Kong, F. T.

PY - 2008/6/12

Y1 - 2008/6/12

N2 - The as-cast microstructures and tensile properties of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys were studied. With the addition of Y, YAl2 phase forms mainly along the lamellar colony boundaries as rounded or elongated particles and slightly inner the colonies as the finer particles. The microstructure of Ti-45Al-5Nb-0.3Y alloy is remarkably refined, including the lamellar colony size and lamellar spacing, compared with that of Ti-45Al-5Nb alloy. The tensile strength and ductility of Ti-45Al-5Nb-0.3Y alloy at room temperature are improved. The improvement of the Y-bearing TiAl alloy is mainly the superposition of the fine colony grain size and lamellar spacing.

AB - The as-cast microstructures and tensile properties of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys were studied. With the addition of Y, YAl2 phase forms mainly along the lamellar colony boundaries as rounded or elongated particles and slightly inner the colonies as the finer particles. The microstructure of Ti-45Al-5Nb-0.3Y alloy is remarkably refined, including the lamellar colony size and lamellar spacing, compared with that of Ti-45Al-5Nb alloy. The tensile strength and ductility of Ti-45Al-5Nb-0.3Y alloy at room temperature are improved. The improvement of the Y-bearing TiAl alloy is mainly the superposition of the fine colony grain size and lamellar spacing.

KW - Casting

KW - Intermetallics

KW - Mechanical properties

KW - Microstructure

UR - https://www.scopus.com/pages/publications/42649088459

U2 - 10.1016/j.jallcom.2007.03.050

DO - 10.1016/j.jallcom.2007.03.050

M3 - 文章

AN - SCOPUS:42649088459

SN - 0925-8388

VL - 457

SP - 265

EP - 269

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Microstructural refinement and mechanical properties of Y-bearing TiAl alloys

Abstract

Keywords

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