The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints

E. Yakushina; A. Reshetov; I. Semenova; V. Polyakova; A. Rosochowski; R. Valiev

doi:10.1016/j.msea.2018.04.052

The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints

E. Yakushina, A. Reshetov, I. Semenova, V. Polyakova, A. Rosochowski, R. Valiev

Design, Manufacturing And Engineering Management

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

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Abstract

The influence of ultra fine grained (UFG) and coarse grained (CG) microstructure of the titanium alloy Ti-6Al-4V on the strength of a diffusion bonded (DB) joint was studied using a laboratory DB fixture and a new shear test rig. The DB process was carried out at 725°C and 825°C during 2 and 4 hours in a vacuum furnace. Coarsening of grain structure resulting from different DB cycles was quantified. The chain pores were observed at 725°C for both microstructure conditions bonded during 2 hours. The increase of bonding time up to 4 hours leads to subsequent elimination of the pores. The UFG samples bonded at 725°C showed a higher level of the shear strength than CG samples for both bonding times. The CG material demonstrated the highest shear strength after 4 hours of DB bonding at 825°C. The increase of the creep deformation of UFG samples when compared to the CG condition was observed as a result of DB at of 725° C during 4 hours.

Original language	English
Pages (from-to)	251-258
Number of pages	8
Journal	Materials Science and Engineering: A
Volume	726
Early online date	17 Apr 2018
DOIs	https://doi.org/10.1016/j.msea.2018.04.052
Publication status	Published - 30 May 2018

Keywords

microstructure
titanium alloy
diffusion bonding
creep
recrystallisation

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10.1016/j.msea.2018.04.052Licence: CC BY 4.0

Yakushina-etal-MSE-2018-The-influence-of-the-microstructure-morphology-of-two-phase-Ti-6Al-4V-alloyFinal published version, 2.5 MBLicence: CC BY 4.0

Cite this

@article{fa7202c0b59843609168ac6690d1974f,

title = "The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints",

abstract = "The influence of ultra fine grained (UFG) and coarse grained (CG) microstructure of the titanium alloy Ti-6Al-4V on the strength of a diffusion bonded (DB) joint was studied using a laboratory DB fixture and a new shear test rig. The DB process was carried out at 725°C and 825°C during 2 and 4 hours in a vacuum furnace. Coarsening of grain structure resulting from different DB cycles was quantified. The chain pores were observed at 725°C for both microstructure conditions bonded during 2 hours. The increase of bonding time up to 4 hours leads to subsequent elimination of the pores. The UFG samples bonded at 725°C showed a higher level of the shear strength than CG samples for both bonding times. The CG material demonstrated the highest shear strength after 4 hours of DB bonding at 825°C. The increase of the creep deformation of UFG samples when compared to the CG condition was observed as a result of DB at of 725° C during 4 hours.",

keywords = "microstructure, titanium alloy, diffusion bonding, creep, recrystallisation",

author = "E. Yakushina and A. Reshetov and I. Semenova and V. Polyakova and A. Rosochowski and R. Valiev",

year = "2018",

month = may,

day = "30",

doi = "10.1016/j.msea.2018.04.052",

language = "English",

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journal = "Materials Science and Engineering: A",

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T1 - The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints

AU - Yakushina, E.

AU - Reshetov, A.

AU - Semenova, I.

AU - Polyakova, V.

AU - Rosochowski, A.

AU - Valiev, R.

PY - 2018/5/30

Y1 - 2018/5/30

N2 - The influence of ultra fine grained (UFG) and coarse grained (CG) microstructure of the titanium alloy Ti-6Al-4V on the strength of a diffusion bonded (DB) joint was studied using a laboratory DB fixture and a new shear test rig. The DB process was carried out at 725°C and 825°C during 2 and 4 hours in a vacuum furnace. Coarsening of grain structure resulting from different DB cycles was quantified. The chain pores were observed at 725°C for both microstructure conditions bonded during 2 hours. The increase of bonding time up to 4 hours leads to subsequent elimination of the pores. The UFG samples bonded at 725°C showed a higher level of the shear strength than CG samples for both bonding times. The CG material demonstrated the highest shear strength after 4 hours of DB bonding at 825°C. The increase of the creep deformation of UFG samples when compared to the CG condition was observed as a result of DB at of 725° C during 4 hours.

AB - The influence of ultra fine grained (UFG) and coarse grained (CG) microstructure of the titanium alloy Ti-6Al-4V on the strength of a diffusion bonded (DB) joint was studied using a laboratory DB fixture and a new shear test rig. The DB process was carried out at 725°C and 825°C during 2 and 4 hours in a vacuum furnace. Coarsening of grain structure resulting from different DB cycles was quantified. The chain pores were observed at 725°C for both microstructure conditions bonded during 2 hours. The increase of bonding time up to 4 hours leads to subsequent elimination of the pores. The UFG samples bonded at 725°C showed a higher level of the shear strength than CG samples for both bonding times. The CG material demonstrated the highest shear strength after 4 hours of DB bonding at 825°C. The increase of the creep deformation of UFG samples when compared to the CG condition was observed as a result of DB at of 725° C during 4 hours.

KW - microstructure

KW - titanium alloy

KW - diffusion bonding

KW - creep

KW - recrystallisation

UR - https://www.sciencedirect.com/journal/materials-science-and-engineering-a

U2 - 10.1016/j.msea.2018.04.052

DO - 10.1016/j.msea.2018.04.052

M3 - Article

SN - 0921-5093

VL - 726

SP - 251

EP - 258

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints

Abstract

Keywords

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SAMULET Project 4 Task 4.3.1 and Task 4.3.2

Cite this

The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints

Abstract

Keywords

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Other files and links

Fingerprint

Projects

SAMULET Project 4 Task 4.3.1 and Task 4.3.2

Cite this