结果显示，杂质元素的含量偏高和沿晶界的偏析以及不均匀的钨晶粒是造成国产钨靶表面损伤的主要原因。
The results show that high content of impurity elements, segregation along grain boundaries and uneven grain size are main reasons for the surface damage of domestic tungsten targets.
SEM对试样微观形貌的研究表明，晶粒大小不均匀是这种材料的微观特征。
Research of SEM indicates that the heterogeneity of grain size is the typical microstructure of the materials.
随着保温时间的增加，异常晶粒长大所造成的晶粒不均匀程度逐渐降低。
With the increase of holding time during heating, grains tend to be uniform.
结果显示，杂质元素的含量偏高和沿晶界的偏析以及不均匀的钨晶粒是造成国产钨靶表面损伤的主要原因。
The results show that high content of impurity elements, segregation along grain boundaries and uneven grain size are main reasons for the surface damage of domestic tung...
晶粒群运动易于诱发变形的不均匀。
Heterogeneous deformation can be brought out by this kind of flow.
采用金相方法，分析晶粒尺寸和变形程度对塑性变形不均匀性的影响规律，并从晶粒的各向异性角度研究其产生的机理。
Using the metallography, the effect of grain size and strain on deformation ununiformity are investigated, and the mechanism is analyzed from the viewpoint of the anisotropy of grain.
高温小变形时容易发生不完全再结晶，造成晶粒粗大且不均匀，在随后的轧制过程中很难消除。
Small deformation in high temperature is easy to cause incomplete recrystallization and bulky and uneven grain. It is hard to eliminate them in subsequent rolling process.
此外，还描述了由于化学组成不均匀而在四方氧化锆晶粒中形成的一小区域及其相变过程。
In addition, the small area formed in tetragonal ZrO_2 grain due to chemical composition inhomogeneity and the process of the transformation have also been described.
金相显微组织分析表明，不同磁场退火处理后试样晶粒平均大小变化不大，而晶粒间不均匀程度增加。
Optical microstructure pictures show that the magnetic field have few effects on the mean grain sizes of samples through magnetic annealing, and the grain sizes vary drastically.
金相显微组织分析表明，不同磁场退火处理后试样晶粒平均大小变化不大，而晶粒间不均匀程度增加。
Optical microstructure pictures show that the magnetic field have few effects on the mean grain sizes of samples through magnetic annealing, and the grain sizes vary drastically.
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