Microstructure refinement assisted by α-recrystallization in a peritectic TiAl alloy

Jieren Yang; Zitong Gao; Yongfeng Liang; Yulun Wu; Jinguang Li; Rui Hu

doi:10.1016/j.jmrt.2021.01.073

Microstructure refinement assisted by α-recrystallization in a peritectic TiAl alloy

Jieren Yang, Zitong Gao, Yongfeng Liang, Yulun Wu, Jinguang Li, Rui Hu

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

12 引用（Scopus）

摘要

Fine-grained nearly-lamellar (FGNL) microstructures and ultrafine α₂/γ lamellar microstructure were successfully obtained by means of α-recrystallization in a Ti–48Al–2Nb–2Cr alloy. The dynamic recrystallization of α phases and subsequent cooling control contributed to microstructure refinements, which were governed by small-strain α-deformation. Lamellar grain refinement is due to dominating continuous dynamic recrystallization (CDRX). Lamellar structure refinement is mainly achieved by the increase in γ lamellae precipitation sites by α-deformation and fast cooling. Finally, the microstructure evolution and control mechanisms were illustrated, suggesting a promising method for improving the mechanical properties of TiAl alloy.

源语言	英语
页（从-至）	1135-1141
页数	7
期刊	Journal of Materials Research and Technology
卷	11
DOI	https://doi.org/10.1016/j.jmrt.2021.01.073
出版状态	已出版 - 1 3月 2021

访问文件

10.1016/j.jmrt.2021.01.073

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{da25195d66964f9faddfb5433be8aad0,

title = "Microstructure refinement assisted by α-recrystallization in a peritectic TiAl alloy",

abstract = "Fine-grained nearly-lamellar (FGNL) microstructures and ultrafine α2/γ lamellar microstructure were successfully obtained by means of α-recrystallization in a Ti–48Al–2Nb–2Cr alloy. The dynamic recrystallization of α phases and subsequent cooling control contributed to microstructure refinements, which were governed by small-strain α-deformation. Lamellar grain refinement is due to dominating continuous dynamic recrystallization (CDRX). Lamellar structure refinement is mainly achieved by the increase in γ lamellae precipitation sites by α-deformation and fast cooling. Finally, the microstructure evolution and control mechanisms were illustrated, suggesting a promising method for improving the mechanical properties of TiAl alloy.",

keywords = "Continuous dynamic recrystallization, Microstructure refinement, Phase transformation, Titanium aluminides, α-Processing",

author = "Jieren Yang and Zitong Gao and Yongfeng Liang and Yulun Wu and Jinguang Li and Rui Hu",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2021",

month = mar,

day = "1",

doi = "10.1016/j.jmrt.2021.01.073",

language = "英语",

volume = "11",

pages = "1135--1141",

journal = "Journal of Materials Research and Technology",

issn = "2238-7854",

publisher = "Elsevier Editora Ltda",

}

TY - JOUR

T1 - Microstructure refinement assisted by α-recrystallization in a peritectic TiAl alloy

AU - Yang, Jieren

AU - Gao, Zitong

AU - Liang, Yongfeng

AU - Wu, Yulun

AU - Li, Jinguang

AU - Hu, Rui

PY - 2021/3/1

Y1 - 2021/3/1

N2 - Fine-grained nearly-lamellar (FGNL) microstructures and ultrafine α2/γ lamellar microstructure were successfully obtained by means of α-recrystallization in a Ti–48Al–2Nb–2Cr alloy. The dynamic recrystallization of α phases and subsequent cooling control contributed to microstructure refinements, which were governed by small-strain α-deformation. Lamellar grain refinement is due to dominating continuous dynamic recrystallization (CDRX). Lamellar structure refinement is mainly achieved by the increase in γ lamellae precipitation sites by α-deformation and fast cooling. Finally, the microstructure evolution and control mechanisms were illustrated, suggesting a promising method for improving the mechanical properties of TiAl alloy.

AB - Fine-grained nearly-lamellar (FGNL) microstructures and ultrafine α2/γ lamellar microstructure were successfully obtained by means of α-recrystallization in a Ti–48Al–2Nb–2Cr alloy. The dynamic recrystallization of α phases and subsequent cooling control contributed to microstructure refinements, which were governed by small-strain α-deformation. Lamellar grain refinement is due to dominating continuous dynamic recrystallization (CDRX). Lamellar structure refinement is mainly achieved by the increase in γ lamellae precipitation sites by α-deformation and fast cooling. Finally, the microstructure evolution and control mechanisms were illustrated, suggesting a promising method for improving the mechanical properties of TiAl alloy.

KW - Continuous dynamic recrystallization

KW - Microstructure refinement

KW - Phase transformation

KW - Titanium aluminides

KW - α-Processing

UR - http://www.scopus.com/inward/record.url?scp=85111030972&partnerID=8YFLogxK

U2 - 10.1016/j.jmrt.2021.01.073

DO - 10.1016/j.jmrt.2021.01.073

M3 - 文章

AN - SCOPUS:85111030972

SN - 2238-7854

VL - 11

SP - 1135

EP - 1141

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Microstructure refinement assisted by α-recrystallization in a peritectic TiAl alloy

摘要

访问文件

其它文件与链接

指纹

引用此