周智伟,王康,昝祥,等.67%变形量纯钨轧板在1250 ℃退火过程中的再结晶行为[J].精密成形工程,2021,13(2):56-61.
ZHOU Zhi-wei,WANG Kang,ZAN Xiang,et al.Recrystallization Behaviour of Pure Tungsten Plate Warm Rolled to 67% Thickness Reduction during Isothermal Annealing at 1250 ℃[J].Journal of Netshape Forming Engineering,2021,13(2):56-61. |
| 67%变形量纯钨轧板在1250 ℃退火过程中的再结晶行为 |
| Recrystallization Behaviour of Pure Tungsten Plate Warm Rolled to 67% Thickness Reduction during Isothermal Annealing at 1250 ℃ |
| 投稿时间：2020-10-30 |
| DOI：10.3969/j.issn.1674-6457.2021.02.009 |
| 中文关键词: 纯钨 温轧 等温退火 再结晶 织构 |
| 英文关键词: pure tungsten warm rolling isothermal annealing recrystallization texture |
| 基金项目:国家磁约束核聚变能发展研究专项(2019YFE03120003) |
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| 中文摘要: |
| 目的 研究轧制压下量为67%的纯钨板在退火过程中的再结晶行为。方法 对67%变形量纯钨板在1250 ℃下进行等温退火实验，运用电子背散射衍射技术获得了变形态和退火态的显微组织与织构，量化了其晶粒尺寸、纵横比以及主要纤维织构的体积分数，分析了变形态组织中潜在晶核的信息。在此基础上，对再结晶前后的显微组织和织构进行了对比分析。结果 温轧后纯钨板的组织中包含了潜在的再结晶晶核，W67在1250 ℃下退火过程中以较快速度发生了不连续静态再结晶。结论 随着退火时间的增加，再结晶晶粒的尺寸逐渐增大，但其纵横比基本保持不变。在再结晶过程中，θ纤维织构和α纤维织构有所增加，而γ纤维织构明显减少。 |
| 英文摘要: |
| The work aims to study the recrystallization behaviour of pure tungsten plate with 67% of rolling thickness reduction. Isothermal annealing experiment was carried out on pure tungsten plate with 67% rolling thickness reduction at 1250 ℃. The electron backscatter diffraction technique was used to analyze the microstructure and texture evolution during reduction and annealing. The grain size, aspect ratio and volume fraction of main fibre texture were quantified. The potential nuclei information in the deformed texture was analyzed. On this basis, the microstructure and texture before and after recrystallization were compared. The microstructure of the pure tungsten plate contained potential recrystallized nuclei. Discontinuous static recrystallization occurred at a faster rate during annealing at 1250 ℃. As the annealing time increases, the size of the recrystallized grains gradually increases, but its aspect ratio remains constant. During the recrystallization process, the θ fibre texture and α fibre texture increase while the γ fibre texture decreases significantly. |
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