Strain induced structural transition of interfaces and twins in a hot-deformed dual-phase TiAl alloy

Guoliang Chen; Jinguo Wang; Lichun Zhang; Hengqiang Ye

Strain induced structural transition of interfaces and twins in a hot-deformed dual-phase TiAl alloy

Guoliang Chen^*
, Jinguo Wang
, Lichun Zhang
, Hengqiang Ye

^*Corresponding author for this work

University of Science and Technology Beijing

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

31 Scopus citations

Abstract

The structure characteristics of α₂/γ interfaces and the features of deformation twins in a quasi-isothermal forged Ti-45Al-10Nb alloy were studied by high-resolution transmission electron microscopy. Three types of strain induced α₂/γ interfaces and two types of strain induced twin boundaries were identified. The most important features are high density of ledges and the existence of 1/3[111] Frank partial dislocation. Mechanisms for the formation of these interfaces were proposed. Two types of deformation twins were observed. These deformation twins always start from the ledges. It seems that ledges at interfaces are important features of interfacial structure for the mechanical behavior of alloys.

Original language	English
Pages (from-to)	273-286
Number of pages	14
Journal	Acta Metallurgica Sinica Series A, Physical Metallurgy & Materials Science
Volume	8
Issue number	4-6
State	Published - Jun 1995
Externally published	Yes

Cite this

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title = "Strain induced structural transition of interfaces and twins in a hot-deformed dual-phase TiAl alloy",

abstract = "The structure characteristics of α2/γ interfaces and the features of deformation twins in a quasi-isothermal forged Ti-45Al-10Nb alloy were studied by high-resolution transmission electron microscopy. Three types of strain induced α2/γ interfaces and two types of strain induced twin boundaries were identified. The most important features are high density of ledges and the existence of 1/3[111] Frank partial dislocation. Mechanisms for the formation of these interfaces were proposed. Two types of deformation twins were observed. These deformation twins always start from the ledges. It seems that ledges at interfaces are important features of interfacial structure for the mechanical behavior of alloys.",

author = "Guoliang Chen and Jinguo Wang and Lichun Zhang and Hengqiang Ye",

year = "1995",

month = jun,

language = "英语",

volume = "8",

pages = "273--286",

journal = "Acta Metallurgica Sinica Series A, Physical Metallurgy \& Materials Science",

issn = "1000-9442",

publisher = "Editorial Board of Acta Metallurgica Sinica",

number = "4-6",

}

TY - JOUR

T1 - Strain induced structural transition of interfaces and twins in a hot-deformed dual-phase TiAl alloy

AU - Chen, Guoliang

AU - Wang, Jinguo

AU - Zhang, Lichun

AU - Ye, Hengqiang

PY - 1995/6

Y1 - 1995/6

N2 - The structure characteristics of α2/γ interfaces and the features of deformation twins in a quasi-isothermal forged Ti-45Al-10Nb alloy were studied by high-resolution transmission electron microscopy. Three types of strain induced α2/γ interfaces and two types of strain induced twin boundaries were identified. The most important features are high density of ledges and the existence of 1/3[111] Frank partial dislocation. Mechanisms for the formation of these interfaces were proposed. Two types of deformation twins were observed. These deformation twins always start from the ledges. It seems that ledges at interfaces are important features of interfacial structure for the mechanical behavior of alloys.

AB - The structure characteristics of α2/γ interfaces and the features of deformation twins in a quasi-isothermal forged Ti-45Al-10Nb alloy were studied by high-resolution transmission electron microscopy. Three types of strain induced α2/γ interfaces and two types of strain induced twin boundaries were identified. The most important features are high density of ledges and the existence of 1/3[111] Frank partial dislocation. Mechanisms for the formation of these interfaces were proposed. Two types of deformation twins were observed. These deformation twins always start from the ledges. It seems that ledges at interfaces are important features of interfacial structure for the mechanical behavior of alloys.

UR - https://www.scopus.com/pages/publications/0029313735

M3 - 文章

AN - SCOPUS:0029313735

SN - 1000-9442

VL - 8

SP - 273

EP - 286

JO - Acta Metallurgica Sinica Series A, Physical Metallurgy & Materials Science

JF - Acta Metallurgica Sinica Series A, Physical Metallurgy & Materials Science

IS - 4-6

ER -

Strain induced structural transition of interfaces and twins in a hot-deformed dual-phase TiAl alloy

Abstract

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