The effect of grain size and crystal orientation on the tensile deformation behavior of Ti-3Al-4.5V-5Mo titanium alloy was studied by using scanning electron scanning electron, X diffraction instrument and theoretical calculation. The results of tensile test of the wires in different states have verified that there are obvious macroscopic yield points on true stress-true strain curves of 720-840 ℃ annealing structures, and then a stress drop occurs. When the crystal orientation of α phase all shows <0001> fiber texture of different wires, the grain size determines the macroscopic yield stress of the wire. The larger the grain size is, the lower macroscopic yield stress is. Compared with <0001> fiber texture, the existence of <\begin{document}${10 \overline 10}$\end{document}> fiber texture of α phase generates larger plastic deformation in α phase, the internal stress in β phase, increased, and the macroscopic yield strength of the alloy decreased.
Effect of microstructure on tensile deformation behavior of Ti-3Al-4.5V-5Mo titanium alloy
2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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