Effect of heat treatment on the microstructure of two-step forging for high Nb containing TiAl alloy

Li Hua Xu; Xiang Jun Xu; Yan Li Wang; Jun Pin Lin; Xi Ping Song; Zhi Lin; Guo Liang Chen; Shu Suo Li; Xi Kong Su; Ya Fang Han

Effect of heat treatment on the microstructure of two-step forging for high Nb containing TiAl alloy

Li Hua Xu^*
, Xiang Jun Xu
, Yan Li Wang
, Jun Pin Lin
, Xi Ping Song
, Zhi Lin
, Guo Liang Chen
, Shu Suo Li
, Xi Kong Su
, Ya Fang Han

^*Corresponding author for this work

Research institute of Aero-Engine

University of Science and Technology Beijing
Beihang University

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

4 Scopus citations

Abstract

Effect of heat treatment processings on the microstructure of two-step forging for high Nb containing TiAl alloy was investigated. Different heat treatment processes were employed to obtain different microstructures of Ti-45Al-9(Nb, W, B, Y) alloy. The results show that, after the heat treatment of 1310°C/20 min + 1250°C/2h/AC, the β phase can be efficiently eliminated and the uniform fine duplex microstructures can be gained. Followed by the heat treatment at α single phase region directly, striped FL microstructure of coarse colony and fine colony is obtained. The holding at (α+γ) phase region can result in the homogenous fine FL microstructure relatively. The FL microstructure produced by the heat treatment of HT6 is the most homogenous and finest.

Original language	English
Pages (from-to)	16-19
Number of pages	4
Journal	Journal of Aeronautical Materials
Volume	25
Issue number	4
State	Published - Aug 2005

Keywords

Heat treatment
High Nb containing TiAl alloy
Microstructure

Cite this

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title = "Effect of heat treatment on the microstructure of two-step forging for high Nb containing TiAl alloy",

abstract = "Effect of heat treatment processings on the microstructure of two-step forging for high Nb containing TiAl alloy was investigated. Different heat treatment processes were employed to obtain different microstructures of Ti-45Al-9(Nb, W, B, Y) alloy. The results show that, after the heat treatment of 1310°C/20 min + 1250°C/2h/AC, the β phase can be efficiently eliminated and the uniform fine duplex microstructures can be gained. Followed by the heat treatment at α single phase region directly, striped FL microstructure of coarse colony and fine colony is obtained. The holding at (α+γ) phase region can result in the homogenous fine FL microstructure relatively. The FL microstructure produced by the heat treatment of HT6 is the most homogenous and finest.",

keywords = "Heat treatment, High Nb containing TiAl alloy, Microstructure",

author = "Xu, \{Li Hua\} and Xu, \{Xiang Jun\} and Wang, \{Yan Li\} and Lin, \{Jun Pin\} and Song, \{Xi Ping\} and Zhi Lin and Chen, \{Guo Liang\} and Li, \{Shu Suo\} and Su, \{Xi Kong\} and Han, \{Ya Fang\}",

year = "2005",

month = aug,

language = "英语",

volume = "25",

pages = "16--19",

journal = "Journal of Aeronautical Materials",

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}

TY - JOUR

T1 - Effect of heat treatment on the microstructure of two-step forging for high Nb containing TiAl alloy

AU - Xu, Li Hua

AU - Xu, Xiang Jun

AU - Wang, Yan Li

AU - Lin, Jun Pin

AU - Song, Xi Ping

AU - Lin, Zhi

AU - Chen, Guo Liang

AU - Li, Shu Suo

AU - Su, Xi Kong

AU - Han, Ya Fang

PY - 2005/8

Y1 - 2005/8

N2 - Effect of heat treatment processings on the microstructure of two-step forging for high Nb containing TiAl alloy was investigated. Different heat treatment processes were employed to obtain different microstructures of Ti-45Al-9(Nb, W, B, Y) alloy. The results show that, after the heat treatment of 1310°C/20 min + 1250°C/2h/AC, the β phase can be efficiently eliminated and the uniform fine duplex microstructures can be gained. Followed by the heat treatment at α single phase region directly, striped FL microstructure of coarse colony and fine colony is obtained. The holding at (α+γ) phase region can result in the homogenous fine FL microstructure relatively. The FL microstructure produced by the heat treatment of HT6 is the most homogenous and finest.

AB - Effect of heat treatment processings on the microstructure of two-step forging for high Nb containing TiAl alloy was investigated. Different heat treatment processes were employed to obtain different microstructures of Ti-45Al-9(Nb, W, B, Y) alloy. The results show that, after the heat treatment of 1310°C/20 min + 1250°C/2h/AC, the β phase can be efficiently eliminated and the uniform fine duplex microstructures can be gained. Followed by the heat treatment at α single phase region directly, striped FL microstructure of coarse colony and fine colony is obtained. The holding at (α+γ) phase region can result in the homogenous fine FL microstructure relatively. The FL microstructure produced by the heat treatment of HT6 is the most homogenous and finest.

KW - Heat treatment

KW - High Nb containing TiAl alloy

KW - Microstructure

UR - https://www.scopus.com/pages/publications/23944443535

M3 - 文章

AN - SCOPUS:23944443535

SN - 1005-5053

VL - 25

SP - 16

EP - 19

JO - Journal of Aeronautical Materials

JF - Journal of Aeronautical Materials

IS - 4

ER -

Effect of heat treatment on the microstructure of two-step forging for high Nb containing TiAl alloy

Abstract

Keywords

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