Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

Meike Su; Lijing Zheng; Hu Zhang; Zebao Lang

Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

Meike Su^*
, Lijing Zheng
, Hu Zhang
, Zebao Lang

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
China Aerospace Science and Technology Corporation

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

1 Scopus citations

Abstract

Ti-46Al-2Cr-2Nb-(B, W)(at%) alloy prepared by powder metallurgy was direct heat treated and microstructures of the alloy were obtained by cooling at different cooling rates. Results show that duplex microstructure consisting mainly of fine equiaxed γ grains and lamellar colonies were obtained at cooling rate of 50°C/min. High volume fractions of lamellar colonies result in low elongation. Structure consisting mainly of fine γ grains and α₂ grains were formed at cooling rate of 10°C/min and 5°C/min. Presence of α₂ phase further reduced the elongation.

Original language	English
Pages (from-to)	549-552+558
Journal	Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
Volume	39
Issue number	4
State	Published - Apr 2013

Keywords

Heat treatment
Mechanical property
Powder metallurgy
Ti-Al alloy

Cite this

@article{bb0e44cf64e8417c8d1e95cba1ec2504,

title = "Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy",

abstract = "Ti-46Al-2Cr-2Nb-(B, W)(at\%) alloy prepared by powder metallurgy was direct heat treated and microstructures of the alloy were obtained by cooling at different cooling rates. Results show that duplex microstructure consisting mainly of fine equiaxed γ grains and lamellar colonies were obtained at cooling rate of 50°C/min. High volume fractions of lamellar colonies result in low elongation. Structure consisting mainly of fine γ grains and α2 grains were formed at cooling rate of 10°C/min and 5°C/min. Presence of α2 phase further reduced the elongation.",

keywords = "Heat treatment, Mechanical property, Powder metallurgy, Ti-Al alloy",

author = "Meike Su and Lijing Zheng and Hu Zhang and Zebao Lang",

year = "2013",

month = apr,

language = "英语",

volume = "39",

pages = "549--552+558",

journal = "Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics",

issn = "1001-5965",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

number = "4",

}

TY - JOUR

T1 - Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

AU - Su, Meike

AU - Zheng, Lijing

AU - Zhang, Hu

AU - Lang, Zebao

PY - 2013/4

Y1 - 2013/4

N2 - Ti-46Al-2Cr-2Nb-(B, W)(at%) alloy prepared by powder metallurgy was direct heat treated and microstructures of the alloy were obtained by cooling at different cooling rates. Results show that duplex microstructure consisting mainly of fine equiaxed γ grains and lamellar colonies were obtained at cooling rate of 50°C/min. High volume fractions of lamellar colonies result in low elongation. Structure consisting mainly of fine γ grains and α2 grains were formed at cooling rate of 10°C/min and 5°C/min. Presence of α2 phase further reduced the elongation.

AB - Ti-46Al-2Cr-2Nb-(B, W)(at%) alloy prepared by powder metallurgy was direct heat treated and microstructures of the alloy were obtained by cooling at different cooling rates. Results show that duplex microstructure consisting mainly of fine equiaxed γ grains and lamellar colonies were obtained at cooling rate of 50°C/min. High volume fractions of lamellar colonies result in low elongation. Structure consisting mainly of fine γ grains and α2 grains were formed at cooling rate of 10°C/min and 5°C/min. Presence of α2 phase further reduced the elongation.

KW - Heat treatment

KW - Mechanical property

KW - Powder metallurgy

KW - Ti-Al alloy

UR - https://www.scopus.com/pages/publications/84878480782

M3 - 文章

AN - SCOPUS:84878480782

SN - 1001-5965

VL - 39

SP - 549-552+558

JO - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

JF - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

IS - 4

ER -

Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

Abstract

Keywords

Other files and links

Fingerprint

Cite this