Abstract
The microstructure and mechanical properties of TB8 cold-rolled plate with a thickness reduction of 50% during annealing at different temperatures are investigated. The results show that annealing for 1 h below 750 °C does not induce the recrystallization transition, remaining the main texture components of {001} <110>, {113} <110> and {112} <110>. The ellipsoidal ω phase is formed when the alloy is annealed at 400 °C. α phase is formed when the alloy is annealed from 450 to 750 °C. The size and volume fraction of α phase increases first and then declines in control of driving force of phase transformation and diffusion. The synergistic effect of the precipitation of ω phase and α phase and the disappearance of dislocation makes the tensile strength of the plate decrease first, then increase, and finally decrease with the increase in annealing temperature. The change in plasticity is opposite to that of strength.
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Acknowledgment
This work was supported by Key Laboratory of Superlight Materials & Surface Technology (Harbin Engineering University), Ministry of Education; Application Technology Research and Development Program of Harbin under Grant (No.: 2017RAQXJ015).
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Qian, B., Li, L., Sun, J. et al. Effects of Annealing on the Microstructures and Mechanical Properties of Cold-Rolled TB8 Alloy. J. of Materi Eng and Perform 28, 2816–2825 (2019). https://doi.org/10.1007/s11665-019-04082-3
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DOI: https://doi.org/10.1007/s11665-019-04082-3