@article{oai:nifs-repository.repo.nii.ac.jp:02000019,
 author = {SHEN, Jingjie and SAITO, Kazuki and TOKITANI, Masayuki and MUROGA, Takeo},
 issue = {September 2023},
 journal = {Fusion Engineering and Design},
 month = {Jun},
 note = {0000-0001-5706-0221, The microstructural evolution and Vickers hardness variations upon annealing in the temperature range of 873 – 1273 K of cold rolled high-purity V-4Cr-(0∼4)Ti alloys are investigated. Results show that partial recrystallization occurs at 1073 K, recrystallization is complete at 1273 K, and Ti addition results in grain refinement. Grains become more isotropic after annealing at 1273 K. Besides, precipitates are observed after annealing at 973 K and above when Ti concentration is 1 wt% and higher. The size of precipitates increases with increasing Ti concentration and annealing temperature. Furthermore, Vickers hardness of cold rolled V-4Cr-xTi alloy drops to a minimum with increasing annealing temperature to 1173 K due to recovery of dislocations and recrystallization process. With annealing at 1273 K, hardness does not vary for V-4Cr-0Ti alloy, whereas it slightly increases for V-4Cr-(1∼4)Ti alloys, which is presumably attributed to partial dissolution of precipitates into the matrix. Additionally, purification by further reducing the high-activation impurities and interstitial impurities dose not evidently affect the recrystallization behavior and hardness of V-4Cr-4Ti alloy after recrystallization, however, the low-activation property is expected to be enhanced.},
 title = {Effects of annealing temperature on microstructure and hardness of cold rolled high-purity V-4Cr-xTi alloys},
 volume = {194},
 year = {2023}
}