Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study

Dingcong Cui; Qingfeng Wu; Feng Jin; Chenbo Xu; Mingxin Wang; Zhijun Wang; Junjie Li; Feng He; Jinglong Li; Jincheng Wang

doi:10.1007/s40195-022-01477-5

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti₂AlNb Joint: an In-situ Study

Dingcong Cui, Qingfeng Wu, Feng Jin, Chenbo Xu, Mingxin Wang, Zhijun Wang, Junjie Li, Feng He, Jinglong Li, Jincheng Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

4 Scopus citations

Abstract

A defect-free Ti₂AlNb joint has been obtained by the inertia friction welding (IFW) technology. The weld zone (WZ) is composed of B2 grains refined by discontinuous dynamic recrystallization and enhanced by grain refinement strengthening. And the average microhardness decreases by about 30 HV from the WZ to the base metal. In-situ SEM analysis reveals that the heterogeneous structure of the joint causes strong strain partitioning during tensile deformation. The microcrack initiation occurs at the interface of the initial B2 phases and B2/O boundaries. Owing to stress concentration, the multi-slip bands and cracks tend to generate in the heat-affected zone (HAZ), causing a premature fracture.

Original language	English
Pages (from-to)	611-622
Number of pages	12
Journal	Acta Metallurgica Sinica (English Letters)
Volume	36
Issue number	4
DOIs	https://doi.org/10.1007/s40195-022-01477-5
State	Published - Apr 2023

Keywords

Deformation behaviors
Inertia friction welding
Microstructure
TiAlNb alloy

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10.1007/s40195-022-01477-5

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title = "Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study",

abstract = "A defect-free Ti2AlNb joint has been obtained by the inertia friction welding (IFW) technology. The weld zone (WZ) is composed of B2 grains refined by discontinuous dynamic recrystallization and enhanced by grain refinement strengthening. And the average microhardness decreases by about 30 HV from the WZ to the base metal. In-situ SEM analysis reveals that the heterogeneous structure of the joint causes strong strain partitioning during tensile deformation. The microcrack initiation occurs at the interface of the initial B2 phases and B2/O boundaries. Owing to stress concentration, the multi-slip bands and cracks tend to generate in the heat-affected zone (HAZ), causing a premature fracture.",

keywords = "Deformation behaviors, Inertia friction welding, Microstructure, TiAlNb alloy",

author = "Dingcong Cui and Qingfeng Wu and Feng Jin and Chenbo Xu and Mingxin Wang and Zhijun Wang and Junjie Li and Feng He and Jinglong Li and Jincheng Wang",

note = "Publisher Copyright: {\textcopyright} 2022, The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature.",

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doi = "10.1007/s40195-022-01477-5",

language = "英语",

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T1 - Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint

T2 - an In-situ Study

AU - Cui, Dingcong

AU - Wu, Qingfeng

AU - Jin, Feng

AU - Xu, Chenbo

AU - Wang, Mingxin

AU - Wang, Zhijun

AU - Li, Junjie

AU - He, Feng

AU - Li, Jinglong

AU - Wang, Jincheng

PY - 2023/4

Y1 - 2023/4

N2 - A defect-free Ti2AlNb joint has been obtained by the inertia friction welding (IFW) technology. The weld zone (WZ) is composed of B2 grains refined by discontinuous dynamic recrystallization and enhanced by grain refinement strengthening. And the average microhardness decreases by about 30 HV from the WZ to the base metal. In-situ SEM analysis reveals that the heterogeneous structure of the joint causes strong strain partitioning during tensile deformation. The microcrack initiation occurs at the interface of the initial B2 phases and B2/O boundaries. Owing to stress concentration, the multi-slip bands and cracks tend to generate in the heat-affected zone (HAZ), causing a premature fracture.

AB - A defect-free Ti2AlNb joint has been obtained by the inertia friction welding (IFW) technology. The weld zone (WZ) is composed of B2 grains refined by discontinuous dynamic recrystallization and enhanced by grain refinement strengthening. And the average microhardness decreases by about 30 HV from the WZ to the base metal. In-situ SEM analysis reveals that the heterogeneous structure of the joint causes strong strain partitioning during tensile deformation. The microcrack initiation occurs at the interface of the initial B2 phases and B2/O boundaries. Owing to stress concentration, the multi-slip bands and cracks tend to generate in the heat-affected zone (HAZ), causing a premature fracture.

KW - Deformation behaviors

KW - Inertia friction welding

KW - Microstructure

KW - TiAlNb alloy

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DO - 10.1007/s40195-022-01477-5

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EP - 622

JO - Acta Metallurgica Sinica (English Letters)

JF - Acta Metallurgica Sinica (English Letters)

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ER -

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti₂AlNb Joint: an In-situ Study

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Keywords

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