Molecular Dynamics Study on the Influence of Ti-Al-V Phase Interface Characteristics on Deformation Behavior and Mechanisms

Abstract:

This study investigates the influence of α/β interface characteristics on the mechanical properties and plastic deformation behavior of titanium alloys, focusing on Ti-Al-V system. Molecular dynamics simulations of Ti-Al-V alloys with different gradient α/β interface models reveal that the linear gradient interface exhibits superior strength at ultra-low temperatures compared to "S" gradient and non-gradient models. Analysis indicates structural transitions primarily occur at the interface at 70 K. Dislocation analysis shows high strength of the linear gradient interface at 70 K and 0.01 K, with dislocations concentrated at the α/β interface. With the change of interface characteristics, the mechanical properties also exhibit gradient variations.

• Periodical: Materials Science Forum (Volume 1137)
• Pages: 29-35
• DOI: https://doi.org/10.4028/p-QgsKY5
• Online since: December 2024
• Authors: Gao Yang Liu, Jia Yi Li, Peng Liu, Dong He*
• Keywords: Molecular Dynamics, Ti-Al-V Alloy, Ultra-Low Temperature, α/β Interface

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