A novel β eutectoid decomposition in the Ru-containing γ-TiAl alloys

Yulun Wu; Rui Hu; Jieren Yang; Zitong Gao

doi:10.1016/j.matlet.2021.130762

A novel β eutectoid decomposition in the Ru-containing γ-TiAl alloys

Yulun Wu
, Rui Hu
, Jieren Yang
, Zitong Gao

材料学院

Northwestern Polytechnical University Xian
Sichuan University

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

A eutectoid decomposition of β → τ₁ + γ was revealed in the Ru-containing γ-TiAl alloys by means of in-situ synchrotron radiation observation. The lamellar products formed by cooperative growth was observed after Ar quenching and evolved into non-lamellar morphology with the cooling rate decreasing. The lamellar eutectoid nodulus either precipitated attaching to γ phase or directly nucleated in parent β phase. The approximate eutectoid composition is 39.03%Ti, 50.25%Al and 10.71%Ru. The τ₁ product in one nodulus processes the same crystallographic orientation but unclear orientation relationship with γ product. In addition, the diffusion-controlled eutectoid decomposition is quite sluggish because of the slow diffusion rate of Ru atom.

源语言	英语
文章编号	130762
期刊	Materials Letters
卷	305
DOI	https://doi.org/10.1016/j.matlet.2021.130762
出版状态	已出版 - 15 12月 2021

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10.1016/j.matlet.2021.130762

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title = "A novel β eutectoid decomposition in the Ru-containing γ-TiAl alloys",

abstract = "A eutectoid decomposition of β → τ1 + γ was revealed in the Ru-containing γ-TiAl alloys by means of in-situ synchrotron radiation observation. The lamellar products formed by cooperative growth was observed after Ar quenching and evolved into non-lamellar morphology with the cooling rate decreasing. The lamellar eutectoid nodulus either precipitated attaching to γ phase or directly nucleated in parent β phase. The approximate eutectoid composition is 39.03\%Ti, 50.25\%Al and 10.71\%Ru. The τ1 product in one nodulus processes the same crystallographic orientation but unclear orientation relationship with γ product. In addition, the diffusion-controlled eutectoid decomposition is quite sluggish because of the slow diffusion rate of Ru atom.",

keywords = "Eutectoid decomposition, Intermetallic alloys and compounds, Microstructure, Phase transformation, X-ray techniques",

author = "Yulun Wu and Rui Hu and Jieren Yang and Zitong Gao",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = dec,

day = "15",

doi = "10.1016/j.matlet.2021.130762",

language = "英语",

volume = "305",

journal = "Materials Letters",

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TY - JOUR

T1 - A novel β eutectoid decomposition in the Ru-containing γ-TiAl alloys

AU - Wu, Yulun

AU - Hu, Rui

AU - Yang, Jieren

AU - Gao, Zitong

PY - 2021/12/15

Y1 - 2021/12/15

N2 - A eutectoid decomposition of β → τ1 + γ was revealed in the Ru-containing γ-TiAl alloys by means of in-situ synchrotron radiation observation. The lamellar products formed by cooperative growth was observed after Ar quenching and evolved into non-lamellar morphology with the cooling rate decreasing. The lamellar eutectoid nodulus either precipitated attaching to γ phase or directly nucleated in parent β phase. The approximate eutectoid composition is 39.03%Ti, 50.25%Al and 10.71%Ru. The τ1 product in one nodulus processes the same crystallographic orientation but unclear orientation relationship with γ product. In addition, the diffusion-controlled eutectoid decomposition is quite sluggish because of the slow diffusion rate of Ru atom.

AB - A eutectoid decomposition of β → τ1 + γ was revealed in the Ru-containing γ-TiAl alloys by means of in-situ synchrotron radiation observation. The lamellar products formed by cooperative growth was observed after Ar quenching and evolved into non-lamellar morphology with the cooling rate decreasing. The lamellar eutectoid nodulus either precipitated attaching to γ phase or directly nucleated in parent β phase. The approximate eutectoid composition is 39.03%Ti, 50.25%Al and 10.71%Ru. The τ1 product in one nodulus processes the same crystallographic orientation but unclear orientation relationship with γ product. In addition, the diffusion-controlled eutectoid decomposition is quite sluggish because of the slow diffusion rate of Ru atom.

KW - Eutectoid decomposition

KW - Intermetallic alloys and compounds

KW - Microstructure

KW - Phase transformation

KW - X-ray techniques

UR - https://www.scopus.com/pages/publications/85114180289

U2 - 10.1016/j.matlet.2021.130762

DO - 10.1016/j.matlet.2021.130762

M3 - 文章

AN - SCOPUS:85114180289

SN - 0167-577X

VL - 305

JO - Materials Letters

JF - Materials Letters

M1 - 130762

ER -

A novel β eutectoid decomposition in the Ru-containing γ-TiAl alloys

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