Dynamic Recrystallization-Related Interface Phase Boundary Migration of TC17/TC4 Bond with Initial Equiaxed Microstructure
- 67 Downloads
The phase, grain, orientation and local misorientation in the bonding interface of a TC17/TC4 bond at different bonding times were carefully investigated via electron backscatter diffraction technique. Dynamic recrystallization (DRX) occurred in the primary α (αp)-enriched region of the TC4 side, in which large αp grains of the TC4 side transformed into small recrystallized α grains with random orientation. With the increasing of bonding time, DRX in the αp-enriched region of the TC4 side was more evident and the recrystallized α grains grew. The stored energy difference between the recrystallized α grains of the TC4 side and the β grains/subgrains of the TC17 side provided the driving force for the migration of the interface phase boundary (IPB). In addition, the migration of IPB was promoted as the bonding time increased, which was due to the synergistic effect of the increase in the stored energy difference and the growth of the recrystallized α grains of the TC4 side.
This project is supported by National Natural Science Foundation of China (Grant Nos. 51475375 and 51505386).
Conflict of interest
The authors declared that they have no conflicts of interest to this work.
- 18.S.L. Semiatin and D.U. Furrer, Modeling of microstructure evolution during the thermomechanical processing of titanium alloys.Fundamentals of Modeling for Metals Processing, ed. S.L. Semiatin and D.U. Furrer (Ohio, NY: ASM International, 2009), p. 536.Google Scholar
- 21.F.J. Humphreys and M. Hatherly, Recrystallization and Related Annealing Phenomena, 2nd ed. (Oxford, NY: Elsevier, 2004), pp. 178–185.Google Scholar
- 22.O. Engler and V. Randle, Introduction to Texture Analysis, 2nd ed. (Florida, NY: CRC Press, 2010), pp. 148–153.Google Scholar