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- The deformation mechanism of AZ91D superplasticity is grain boundary sliding. 挤压态AZ91D镁合金超塑性变形的主要机制为晶界滑移机制。
- In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grain boundary sliding proceeds easily. 合金在超塑变形中，位错滑移起重要协调作用，使晶界滑动易于进行。
- The substructure near the damage position was studied by EBSP, then vonbined with the relationship among substructure grain boundary sliding grain size and material deformation compatibility the mechanics of creep damage was discussed. 使用电子背散射衍射技术研究了不同损伤位置附近的亚结构形成情况，结合亚结构、晶界滑移、晶粒尺寸与材料变形协调性等材料变形特点，对蠕变损伤机理进行了探讨。
- The dominant process of superplastic deformation is fine grain boundary sliding, and an appropriately small amount of liquid phase can enhance the high strain rate superplasticity of the composite. 超塑性变形的主要机制是细小晶粒的晶界滑动，适当的微量液相有利于该复合材料的高应变速率超塑性。
- These rocks are lack of foliation and resulted from the brittle fragmentation of mineral grains with rotation of grain fragments accompanied by fractional grain boundary sliding and dilatancy. 这类岩石缺乏面理构造，是由于矿物颗粒的脆性碎裂，旋转以及颗粒边界的磨擦滑动和扩展而造成的。
- These rocks are lack of foliation and resulted from the brittle fragmentation of mineral grains with rotation of grain fragments accompanied by fractional grain boundary sliding and dilatancy . 这类岩石缺乏面理构造，是由于矿物颗粒的脆性碎裂，旋转以及颗粒边界的磨擦滑动和扩展而造成的。
- Keywords phase distributed pattern;high temperature and low cycle fatigue life;grain boundary sliding microstrain; 相分布形态;高温低周疲劳;晶界滑移;
- Keywords intermetallics;superplasticity;deformation mechanism;grain boundary sliding;dy namic recrystallization; 金属间化合物;超塑性;变形机制;晶界滑动;动态再结晶;
- Keywords nano-crystalline materials;face-centered-cubic metals;twin;grain boundary sliding;grain rotation;ductile-to-brittle transition;bimodal grain size materials;ductility; 关键词纳米材料;面心立方金属;孪晶;晶界滑移;晶粒转动;韧-脆转变;双峰晶粒材料;塑性;
- grain boundary sliding 晶界滑移
- The grain boundary secondary phase is an imporrant microstructure component in AIN ceram-ics,having significant effect on thermal conductivity. 晶界第二相是AIN陶瓷显微结构的重要组成部分，对AIN陶瓷的热导率有重大的影响。
- It indicates a transition from boundary sliding to matrix deformation with the coarsening of grains. 随着晶粒尺寸的增大，以晶界滑动为主的变形方式逐渐转向以晶内位错运动为主。
- Impurities tend to segregate at grain boundaries. 杂质常常在晶粒间界偏析。
- And the energies of interdiffusion and grain boundary diffusion have been figured out by the Arrhenius equation. 从Arrhenius方程得出互扩散及晶界扩散激活能。
- The high life LCF cracks of DZ4 superalloy favorably initiate at the transverse segment of longitudinal grain boundary. 定向凝固DZ4合金高寿命低周疲劳裂纹易于萌生于试样内部或亚表面的柱状晶界.
- In the late stage of the deformation, with the grain size growing up, the grain boundary can emit partial dislocations. 在晶界处及附近有台阶界面结构， 以及与台阶形状相对应的应力场衬度。
- In addition, a grain boundary is formed at the coalescence boundary of neighboring growth fronts. 在相邻生长前沿所形成的合并界面处形成晶界;
- Photomicrograph of alloy overheating showes fraction grain boundary coarsening and melt-back delta at first. 其过烧特征最初表现为晶界局部加宽和复熔三角形的出现。
- Two area defects are twins and grain boundaries. 有两种面积缺陷,即孪生和晶粒间界。
- As the continuous chain distribution in grain boundary of T6 state,fracture toughness and stress crossion resistance are low. T6工艺晶界为链状连续分布，断裂韧性和抗应力腐蚀性能较差；
