Quantitative evaluation of the lamellar kinking&rotation on the flow softening of γ-TiAl-based alloys at elevated temperatures

Liang Cheng; Fengming Qiang; Jinshan Li; Emmanuel Bouzy

doi:10.1016/j.matlet.2021.129458

Quantitative evaluation of the lamellar kinking&rotation on the flow softening of γ-TiAl-based alloys at elevated temperatures

Liang Cheng, Fengming Qiang, Jinshan Li, Emmanuel Bouzy

School of Materials Sience and Engineering

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

13 Scopus citations

Abstract

The flow curves of lamellar TiAl alloys generally exhibit pronounced flow softening at elevated temperatures, which has been thought to be caused by recrystallization/globularization. However, in this work we quantitatively determined that the lamellar kinking&rotation is the major softening mechanism especially at the initial deformation stage. By using electron microscopy, the kinking&rotation mechanism as well as the resulted softening mechanism were analyzed and discussed.

Original language	English
Article number	129458
Journal	Materials Letters
Volume	290
DOIs	https://doi.org/10.1016/j.matlet.2021.129458
State	Published - 1 May 2021

Keywords

Flow softening
Hot deformation
Intermetallic alloys and compounds
Lamellar kinking
Microstructure

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10.1016/j.matlet.2021.129458

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title = "Quantitative evaluation of the lamellar kinking&rotation on the flow softening of γ-TiAl-based alloys at elevated temperatures",

abstract = "The flow curves of lamellar TiAl alloys generally exhibit pronounced flow softening at elevated temperatures, which has been thought to be caused by recrystallization/globularization. However, in this work we quantitatively determined that the lamellar kinking&rotation is the major softening mechanism especially at the initial deformation stage. By using electron microscopy, the kinking&rotation mechanism as well as the resulted softening mechanism were analyzed and discussed.",

keywords = "Flow softening, Hot deformation, Intermetallic alloys and compounds, Lamellar kinking, Microstructure",

author = "Liang Cheng and Fengming Qiang and Jinshan Li and Emmanuel Bouzy",

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AU - Cheng, Liang

AU - Qiang, Fengming

AU - Li, Jinshan

AU - Bouzy, Emmanuel

PY - 2021/5/1

Y1 - 2021/5/1

N2 - The flow curves of lamellar TiAl alloys generally exhibit pronounced flow softening at elevated temperatures, which has been thought to be caused by recrystallization/globularization. However, in this work we quantitatively determined that the lamellar kinking&rotation is the major softening mechanism especially at the initial deformation stage. By using electron microscopy, the kinking&rotation mechanism as well as the resulted softening mechanism were analyzed and discussed.

AB - The flow curves of lamellar TiAl alloys generally exhibit pronounced flow softening at elevated temperatures, which has been thought to be caused by recrystallization/globularization. However, in this work we quantitatively determined that the lamellar kinking&rotation is the major softening mechanism especially at the initial deformation stage. By using electron microscopy, the kinking&rotation mechanism as well as the resulted softening mechanism were analyzed and discussed.

KW - Flow softening

KW - Hot deformation

KW - Intermetallic alloys and compounds

KW - Lamellar kinking

KW - Microstructure

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U2 - 10.1016/j.matlet.2021.129458

DO - 10.1016/j.matlet.2021.129458

M3 - 文章

AN - SCOPUS:85100893268

SN - 0167-577X

VL - 290

JO - Materials Letters

JF - Materials Letters

M1 - 129458

ER -

Quantitative evaluation of the lamellar kinking&rotation on the flow softening of γ-TiAl-based alloys at elevated temperatures

Abstract

Keywords

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