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

^*此作品的通讯作者

材料科学与工程学院

Beihang University
China Aerospace Science and Technology Corporation

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	549-552+558
期刊	Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
卷	39
期	4
出版状态	已出版 - 4月 2013

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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",

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

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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

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