Microstructure evolution of the Ti-45Al-8.5Nb-W-Mo-Y alloy

Yun Qi Yan; Wen Sheng Wang; Zhen Qi Zhang; Guo Zhen Luo; Lian Zhou

Microstructure evolution of the Ti-45Al-8.5Nb-W-Mo-Y alloy

Yun Qi Yan, Wen Sheng Wang, Zhen Qi Zhang, Guo Zhen Luo, Lian Zhou

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

3 Scopus citations

Abstract

The phase constitution of Ti-45Al-8.5Nb-W-Mo-Y alloy was studied. The results show that the microstructure of the as-cast alloy exhibits α₂+γ lamellae with a few B₂+ω phases. After 1200°C, 2 h annealing, the high temperature phases are transformed into the ω phase. After 70%-80% hot deformation, the microstructure of the alloy consists of bent lamellae, resident high temperature phases and equiaxed γ grains. The amount of resident high temperature phases can be decreased after 1280°C, 2 h treatment, and the amount of α₂ laths increases. Bent lamellae and equiaxed γ grains construct the as-extruded microstructure. The cyclic heat treatment can also be used to refine the grains.

Original language	English
Pages (from-to)	117-120
Number of pages	4
Journal	Cailiao Kexue yu Gongyi/Material Science and Technology
Volume	10
Issue number	2
State	Published - Jun 2002
Externally published	Yes

Keywords

Phase constitution
TiAl based alloy

Cite this

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title = "Microstructure evolution of the Ti-45Al-8.5Nb-W-Mo-Y alloy",

abstract = "The phase constitution of Ti-45Al-8.5Nb-W-Mo-Y alloy was studied. The results show that the microstructure of the as-cast alloy exhibits α2+γ lamellae with a few B2+ω phases. After 1200°C, 2 h annealing, the high temperature phases are transformed into the ω phase. After 70%-80% hot deformation, the microstructure of the alloy consists of bent lamellae, resident high temperature phases and equiaxed γ grains. The amount of resident high temperature phases can be decreased after 1280°C, 2 h treatment, and the amount of α2 laths increases. Bent lamellae and equiaxed γ grains construct the as-extruded microstructure. The cyclic heat treatment can also be used to refine the grains.",

keywords = "Phase constitution, TiAl based alloy",

author = "Yan, {Yun Qi} and Wang, {Wen Sheng} and Zhang, {Zhen Qi} and Luo, {Guo Zhen} and Lian Zhou",

year = "2002",

month = jun,

language = "英语",

volume = "10",

pages = "117--120",

journal = "Cailiao Kexue yu Gongyi/Material Science and Technology",

issn = "1005-0299",

publisher = "Harbin Institute of Technology",

number = "2",

}

TY - JOUR

T1 - Microstructure evolution of the Ti-45Al-8.5Nb-W-Mo-Y alloy

AU - Yan, Yun Qi

AU - Wang, Wen Sheng

AU - Zhang, Zhen Qi

AU - Luo, Guo Zhen

AU - Zhou, Lian

PY - 2002/6

Y1 - 2002/6

N2 - The phase constitution of Ti-45Al-8.5Nb-W-Mo-Y alloy was studied. The results show that the microstructure of the as-cast alloy exhibits α2+γ lamellae with a few B2+ω phases. After 1200°C, 2 h annealing, the high temperature phases are transformed into the ω phase. After 70%-80% hot deformation, the microstructure of the alloy consists of bent lamellae, resident high temperature phases and equiaxed γ grains. The amount of resident high temperature phases can be decreased after 1280°C, 2 h treatment, and the amount of α2 laths increases. Bent lamellae and equiaxed γ grains construct the as-extruded microstructure. The cyclic heat treatment can also be used to refine the grains.

AB - The phase constitution of Ti-45Al-8.5Nb-W-Mo-Y alloy was studied. The results show that the microstructure of the as-cast alloy exhibits α2+γ lamellae with a few B2+ω phases. After 1200°C, 2 h annealing, the high temperature phases are transformed into the ω phase. After 70%-80% hot deformation, the microstructure of the alloy consists of bent lamellae, resident high temperature phases and equiaxed γ grains. The amount of resident high temperature phases can be decreased after 1280°C, 2 h treatment, and the amount of α2 laths increases. Bent lamellae and equiaxed γ grains construct the as-extruded microstructure. The cyclic heat treatment can also be used to refine the grains.

KW - Phase constitution

KW - TiAl based alloy

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M3 - 文章

AN - SCOPUS:0036624917

SN - 1005-0299

VL - 10

SP - 117

EP - 120

JO - Cailiao Kexue yu Gongyi/Material Science and Technology

JF - Cailiao Kexue yu Gongyi/Material Science and Technology

IS - 2

ER -

Microstructure evolution of the Ti-45Al-8.5Nb-W-Mo-Y alloy

Abstract

Keywords

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