DOAJ Open Access 2022

Tuning the microstructure and mechanical properties of TiAl-based alloy through grain boundary engineering

Yaodong Xuanyuan Hongjun Li Ming Huang Yinbiao Yan Sen Yang

Abstrak

In order to modify the room-temperature plasticity of TiAl-based alloy, grain boundary character distribution (GBCD) in TiAl-based alloy was tuned through multidirectional isothermal forging (MDIF) combined with annealing. The experimental results showed that MDIF provided appropriate driving force for the regeneration of the coincidence site lattice (CSL) boundaries through recovery and recrystallization process. Combination of MDIF and annealing at 1100 °C for 90 min promoted the formation of a large number of annealing twins and increased the fraction of low-ΣCSL boundaries to 65.88% and the ratio of (Σ9+Σ27)/Σ3 to 15.12%, which contributed to the disruption of random boundary networks and enhanced the room-temperature plasticity of the TiAl-based alloy.

Topik & Kata Kunci

Mining engineering. Metallurgy

Penulis (5)

Yaodong Xuanyuan

Hongjun Li

Ming Huang

Yinbiao Yan

Sen Yang

Format Sitasi

APA MLA BibTeX

Xuanyuan, Y., Li, H., Huang, M., Yan, Y., Yang, S. (2022). Tuning the microstructure and mechanical properties of TiAl-based alloy through grain boundary engineering. https://doi.org/10.1016/j.jmrt.2022.05.023

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Informasi Jurnal

Tahun Terbit: 2022
Sumber Database: DOAJ
DOI: 10.1016/j.jmrt.2022.05.023
Akses: Open Access ✓