多向压缩强变形细化Al-Cu合金晶粒 - TNMSC 关键字: Al-Cu合金；多向压缩变形；亚晶；剪切带[gap=1253]Key words: Al-Cu alloy; multi-axial compression deformation; subgrain; shear band
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...；亚晶；Al3(Sc, Zr)析出相；疲劳裂纹；扩展特性[gap=1183]Key words: 2524SZ alloy; scandium; zirconium; subgrain structure; Al3(Sc, Zr) precipitate; fatigue crack; propagation characteristics..
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The mean sub-grain size increases with the increase of the deformation temperature and the decrease of the strain rate. The increase of the deformation and temperature , and the decrease of the strain rate are beneficial to the dynamic recrystallization.
合金的平均亚晶尺寸随着温度的升高、应变速率的降低而增大,变形程度与变形温度的升高、应变速率的降低有利于动态再结晶的发生。
参考来源 - 7050铝合金高温变形行为实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
温度的降低阻碍亚晶界的湮没；
The reduction of temperature hinders the process of annihilation.
亚晶聚合机制对合金的再结晶发挥了作用。
The subgrain coalescence nucleation mechanism is involved in the recrystallization process.
疲劳裂纹扩展阶段裂纹尖端附近为形成于铁素体晶粒内的位错胞及亚晶。
Dislocation cell and sub grain formed in ferrite grain are found at the stage of fatigue crack propagation in the area of crack tip.
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