Dynamic recrystallization mechanism and model of TC31 titanium alloy sheet during hot deformation
Source abstract
Abstract
The dynamic recrystallization (DRX) behavior of TC31 titanium (Ti) alloy was studied at 840–960 °C and 0.0001–0.1 s−1. The results showed that the volume fraction of recrystallized grain increased and the dislocation density gradually decreased with the strain increasing. The influence of strain rate on the critical dislocation density of DRX was greater than that of temperature, the strain rate was 0.001 s−1at 920 °C, and the critical dislocation density was 3.3 × 1014m−2. The DRX behavior was carried out in a smaller strain rate range through a dynamic softening map, and the deformation temperature range was in a similar pattern with normal distribution. The volume fraction of DRX could be validly predicted by the JMAK model, the value of R was 0.995, and the value of the root mean-squared error (RMSE) was 2.96%.Graphical abstractFigure1shows the microstructure, hot deformation dynamic softening map, and predicted results of TC31 titanium alloy.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallurgy and Material Forming · Microstructure and mechanical properties · Aluminum Alloy Microstructure Properties
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