Home FOR AUTHORS Kovove Materialy-Metallic Materials 2020 Kovove Materialy-Metallic Materials Vol. 58 (2020), no. 2, pp.93–101

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Kovove Materialy-Metallic Materials Vol. 58 (2020), no. 2, pp.93–101

Title: Influence of grain size on the triggering stress of stress-induced martensitic transformation and related mechanical properties in two newly developed Ti alloys
Author: C. Li, C. Zhu, H. Xiao, W. Chen, W. Li
Abstract: The β grain growth behavior of two newly developed titanium alloys with composition Ti-10V-1Fe-3Al and Ti-10V-2Cr-3Al (wt.%) isothermally annealed at 900 °C for a different time was studied, and its effect on the triggering stress of stress-induced martensitic (SIM) transformation and related mechanical properties was evaluated. The results show that the grain size increases with the increase of annealing time. The measured grain size of Ti-10V-1Fe-3Al alloy is larger than that of Ti-10V-2Cr-3Al alloy under the same annealing conditions. The increase of the grain size leads to an increase of the triggering stress resulting in the martensitic transformation. The work hardening ability and compressive failure strain of the studied alloys decrease rapidly.
Keywords: titanium alloy, grain size, phase transformation, mechanical properties
Published online: 02-Apr-2020
Year: 2020, Volume: 58, Issue: 2 Page From: 93, Page To: 101
doi:10.4149/km_2020_2_93


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