Abstract
| Language | English |
|---|---|
| Pages | 251-258 |
| Number of pages | 8 |
| Journal | Materials Science and Engineering: A |
| Volume | 726 |
| Early online date | 17 Apr 2018 |
| DOIs | |
| Publication status | Published - 30 May 2018 |
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Keywords
- microstructure
- titanium alloy
- diffusion bonding
- creep
- recrystallisation
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The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints. / Yakushina, E.; Reshetov, A.; Semenova, I.; Polyakova, V.; Rosochowski, A.; Valiev, R.
In: Materials Science and Engineering: A, Vol. 726, 30.05.2018, p. 251-258.Research output: Contribution to journal › Article
TY - JOUR
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
VL - 726
SP - 251
EP - 258
JO - Materials Science and Engineering: A
T2 - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
SN - 0921-5093
ER -