Microstructure of hot-pack rolled Ti-43Al-9V-0. 3Y alloy

Yu Yong Chen; Fan Tao Kong; Zi Yong Chen; Jing Tian

Microstructure of hot-pack rolled Ti-43Al-9V-0. 3Y alloy

Yu Yong Chen
, Fan Tao Kong^*
, Zi Yong Chen
, Jing Tian

^*Corresponding author for this work

Harbin Institute of Technology

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

Abstract

A kind of Ti-43Al-9V-0. 3Y alloy sheet material using hot-pack rolling method is prepared. The microstructures of this alloy containing α₂/γ lamellar microstructure, B₂ phases and rare earth phases (YAl₂) are investigated. The results show that the hot-rolled process can breakdown the as-cast structure, and a fine and homogeneous microstructure can be obtained after hot-rolling. The grains under the as-rolled condition are elongated in the rolling direction and flattened in the normal direction of the sheet. It is very likely that the mechanism for this change in grain size and shape is a grain boundary bulging of deformed grains rather than the nucleation and growth of new recrystallized grains. Subsequent heat treatment at 1 260 °C for 1 h and ageing at 1 000 °C for 4 h will lead to grain growth, and the average grain size of as-rolled Ti-43Al-9V-0. 3Y alloy is about 100 μm after heat treatment.

Original language	English
Pages (from-to)	170-173
Number of pages	4
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	13
Issue number	SPEC. ISS.
State	Published - May 2003
Externally published	Yes

Keywords

Microstructure
Rare earth
Rolling
TiAl based alloys

Cite this

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title = "Microstructure of hot-pack rolled Ti-43Al-9V-0. 3Y alloy",

abstract = "A kind of Ti-43Al-9V-0. 3Y alloy sheet material using hot-pack rolling method is prepared. The microstructures of this alloy containing α2/γ lamellar microstructure, B2 phases and rare earth phases (YAl2) are investigated. The results show that the hot-rolled process can breakdown the as-cast structure, and a fine and homogeneous microstructure can be obtained after hot-rolling. The grains under the as-rolled condition are elongated in the rolling direction and flattened in the normal direction of the sheet. It is very likely that the mechanism for this change in grain size and shape is a grain boundary bulging of deformed grains rather than the nucleation and growth of new recrystallized grains. Subsequent heat treatment at 1 260 °C for 1 h and ageing at 1 000 °C for 4 h will lead to grain growth, and the average grain size of as-rolled Ti-43Al-9V-0. 3Y alloy is about 100 μm after heat treatment.",

keywords = "Microstructure, Rare earth, Rolling, TiAl based alloys",

author = "Chen, \{Yu Yong\} and Kong, \{Fan Tao\} and Chen, \{Zi Yong\} and Jing Tian",

year = "2003",

month = may,

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pages = "170--173",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

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TY - JOUR

T1 - Microstructure of hot-pack rolled Ti-43Al-9V-0. 3Y alloy

AU - Chen, Yu Yong

AU - Kong, Fan Tao

AU - Chen, Zi Yong

AU - Tian, Jing

PY - 2003/5

Y1 - 2003/5

N2 - A kind of Ti-43Al-9V-0. 3Y alloy sheet material using hot-pack rolling method is prepared. The microstructures of this alloy containing α2/γ lamellar microstructure, B2 phases and rare earth phases (YAl2) are investigated. The results show that the hot-rolled process can breakdown the as-cast structure, and a fine and homogeneous microstructure can be obtained after hot-rolling. The grains under the as-rolled condition are elongated in the rolling direction and flattened in the normal direction of the sheet. It is very likely that the mechanism for this change in grain size and shape is a grain boundary bulging of deformed grains rather than the nucleation and growth of new recrystallized grains. Subsequent heat treatment at 1 260 °C for 1 h and ageing at 1 000 °C for 4 h will lead to grain growth, and the average grain size of as-rolled Ti-43Al-9V-0. 3Y alloy is about 100 μm after heat treatment.

AB - A kind of Ti-43Al-9V-0. 3Y alloy sheet material using hot-pack rolling method is prepared. The microstructures of this alloy containing α2/γ lamellar microstructure, B2 phases and rare earth phases (YAl2) are investigated. The results show that the hot-rolled process can breakdown the as-cast structure, and a fine and homogeneous microstructure can be obtained after hot-rolling. The grains under the as-rolled condition are elongated in the rolling direction and flattened in the normal direction of the sheet. It is very likely that the mechanism for this change in grain size and shape is a grain boundary bulging of deformed grains rather than the nucleation and growth of new recrystallized grains. Subsequent heat treatment at 1 260 °C for 1 h and ageing at 1 000 °C for 4 h will lead to grain growth, and the average grain size of as-rolled Ti-43Al-9V-0. 3Y alloy is about 100 μm after heat treatment.

KW - Microstructure

KW - Rare earth

KW - Rolling

KW - TiAl based alloys

UR - https://www.scopus.com/pages/publications/33845670335

M3 - 文章

AN - SCOPUS:33845670335

SN - 1003-6326

VL - 13

SP - 170

EP - 173

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - SPEC. ISS.

ER -

Microstructure of hot-pack rolled Ti-43Al-9V-0. 3Y alloy

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Keywords

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