Zhang, S.; Lin, Y.-C.; Wang, L.-H.; Ding, H.-B.; Qiu, Y.-L. Effects of Aging Treatment on the Microstructures and Mechanical Properties of a TC18 Alloy. Materials2024, 17, 570.
Zhang, S.; Lin, Y.-C.; Wang, L.-H.; Ding, H.-B.; Qiu, Y.-L. Effects of Aging Treatment on the Microstructures and Mechanical Properties of a TC18 Alloy. Materials 2024, 17, 570.
Zhang, S.; Lin, Y.-C.; Wang, L.-H.; Ding, H.-B.; Qiu, Y.-L. Effects of Aging Treatment on the Microstructures and Mechanical Properties of a TC18 Alloy. Materials2024, 17, 570.
Zhang, S.; Lin, Y.-C.; Wang, L.-H.; Ding, H.-B.; Qiu, Y.-L. Effects of Aging Treatment on the Microstructures and Mechanical Properties of a TC18 Alloy. Materials 2024, 17, 570.
Abstract
In the present work, the effects of ageing treatment on the microstructures of a near-β Ti alloy (TC18) are studied. The influence of ageing treatment on the tensile properties and failure mechanisms are systematically analyzed. It is found that the size and morphology of the primary α (αp) phases are insensitive to ageing temperature and time. Furthermore, the ageing temperature and time dramatically influence the precipitation of the secondary α (αs) phases. Massive αs phases precipitate and gradually coarsen, and finally weave together with increasing the ageing temperature or extending the ageing time. The thickness of αs phases is responsible for the material strengths, while the content of α phases can enhance the material ductility. The ductile characteristics of the alloy with coarser αs phases are more obvious than those with thinner αs phases. Therefore, the ageing treatment is helpful for the precipitation and homogeneous distribution of αs phases, which is essential for balancing the strengths and ductility of the studied Ti alloy.
Keywords
Ti alloy; ageing treatment; microstructures; mechanical properties; fracture mechanisms
Subject
Engineering, Metallurgy and Metallurgical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
