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Effect of TiB on the local texture of α phases in titanium matrix composites

  • Composites & nanocomposites
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Abstract

The crystallographic orientation of TiB is one of the main factors that influence the microstructure and texture evolution of Ti-TiB composites. Different microstructures and textures were obtained by forming the two TiB-TC25G composites through vacuum arc melting and in situ reaction hot pressing. The texture evolution, as well as the role of TiB on the α variant selection and microstructure morphology during the β → α phase transformation in TiB-TC25G composites, are studied using an electron backscattered diffraction analysis method in the present work. It appears that the vacuum arc melting makes the TiB texture sharper and promotes the α variant selection during β → α phase transformation. Moreover, the α/TiB interface structure was characterized via transmission electron microscopy. TiB particles provide heterogeneous nucleation sites for the non-Burgers orientation relationship α phases within both TiB-TC25G composites. A synergetic effect of TiB texture and β texture on the formation of α texture is also discussed.

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Acknowledgements

This work was supported by the Youth Innovation Promotion Association CAS (No. 2020193) and National Natural Science Foundation of China (No. 51801213).

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Correspondence to Z. B. Zhao or Q. J. Wang.

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Handling Editor: Catalin Croitoru.

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Sun, H., Zhao, Z.B., Yang, J.X. et al. Effect of TiB on the local texture of α phases in titanium matrix composites. J Mater Sci 57, 4153–4165 (2022). https://doi.org/10.1007/s10853-021-06858-2

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  • DOI: https://doi.org/10.1007/s10853-021-06858-2

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