Details
The influence of the microstructure morphology of two phase Ti-6Al-4V alloy on the mechanical properties of diffusion bonded joints [Электронный ресурс] / E. Yakushina [и др.] // Materials Science and Engineering: A, 2018. – Volume 726, 30 May 2018. — P. 251-258. — Заглавие с титул. экрана. — Доступ из корпоративной сети УГАТУ. — <URL:https://www.sciencedirect.com/science/article/pii/S0921509318305495?via%3Dihub>.
Record create date
6/18/2018
Subject
электронные ресурсы; Microstructure; Titanium alloy; Diffusion bonding; Creep; Recrystallisation
Collections
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?h 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?h. The increase of bonding time up to 4?h 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?h 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?h.
