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A new parameter of non-proportionality based on mean dislocation density and a fatigue damage parameter with a clear microphysical meaning were introduced. 给出了基于疲劳位错密度均值的非比例参量和具有明确微观物理意义的疲劳损伤参量。
mean dislocation density 位错密度均值
T EM observations indicate that the dislocation density is very low in the ELO reg ion. 透射电子显微镜的观测表明在ELO范围内位错密度很低。
Another is to decrease the dislocation density of material as much as possible, such as the whisker. 二是尽量减少位错密度，晶须就是这种方法的一个实例。
With the dislocation density increasing the maximum of the principal strain augments with the pass increasing. 随着位错密度的增加，主应变最大值随后续挤压道次的增加呈增大趋势。
TEM analysis indicates that the dislocation density of pure tantalum is not high and dislocation cells occur after 95% cold rolling reduction. 通过TEM观察,发现变形95%25后,纯钽的位错密度都不是很高,存在有位错胞亚结构。
TEM analysis indicates that the dislocation density of pure tantalum is nut high and dislocation cells occur after 95% cold rolling reduction. 通过TEM观察，发现变形95%25后，纯钽的位错密度都不是很高，存在有位错胞亚结构。
Meanwhile, the dislocation density in the grain and the entwining degree of dislocation decrease in the presence of the electric field. 同时, 电场的激活作用降低了焊合区晶粒内的位错密度, 减少了位错缠结程度, 增加了位错的可动性。
Such an enhancement could be attributed to the reduce dislocation density in the lateral growth regions of the epitaxial layers. 如此的改善可归因于在横向长磊晶层的区域缺陷密度减少造成的结果。
Because the stacking fault energy(SFC) of tantalum is high,the dislocation cross slips easily which can lower the dislocation density. 其原因可能是因为钽的层错能高,位错容易交滑移,使位错密度降低。
Cd_(0.955)Zn_(0.045)Te single crystal with dimensions of 55mm in diameter and low dislocation density and structural perfection was grown by Vertical Bridgman Method. 采用垂直布里奇曼法(VB)生长出直径为55mm、低位错密度、结构完好的碲锌隔单晶(Cd0.;955Zn0
The dislocation density is very low in the ASB, adjacent matrix granulas are highly dislocated. No evidence of a phase transformation within the ASB is observed. ASB内位错密度均很低，其邻近基体区含有高密度位错，ASB内没有察到相变发生
The results showed that the austenitic grain and sub-grain of steel can be obviously refined and the micro-strain and dislocation density are increased. 结果表明,多元变质处理可以显著细化高锰钢奥氏体晶粒和亚晶粒,增大其微观应变和位错密度;
Tests and researches are conducted for microstructure,residual stress,dislocation density and hardening principle of starlike inner race formed by cold closed die forging method. 针对经闭塞冷锻成型的星形套的组织、残余应力、位错密度及硬化规律进行了试验研究。
The results show that the equivalent stress of the pure aluminum augments gradually with the pass increasing, which results in the increase of the dislocation density. 结果表明：随着挤压道次增加，纯铝中等效应力逐渐增加，这导致材料中位错密度的增加；
Chemical EPD observation and X-ray diffraction rocking curves show that there is a higher dislocation density on the wafers cut from the end of the crystal ingots. The generation of those defects is also discussed. 通过化学蚀的EPD观测和X射线衍射测试结果,分析了晶体中后部位错密度增高及其产生的原因。
The high dislocation density in some local areas of the dislocation sub-structures is the major factor which is responsible for the severe LCF damage and fatigue life reduction of Titanium alloy BT9. 非比例载荷下钛合金BT9中的局部高密度位错是其低周疲劳损伤程度加剧及寿命降低的主要因素。
Yield and non yield phenomena can be respectively caused by ferrite+pearlite and non polygon ferrite structures, which are related to the size and the dislocation density of the crystal grain. 铁素体+珠光体组织和非多变形铁素体组织分别会产生屈服现象和无屈服现象,这与其晶粒尺寸的大小和晶粒内位错密度的高低有关。
In order to predict material behaviour of an AISI 302 stainless steel at high strain rates generated during wire-rod rolling, a material model based on dislocation density is applied. 学术界曾利用穷举法求解模板最佳化设计的组合，唯此法是一种没有效率且费时冗长的计算方式，而所得的结果又未必真正达到最佳化。
By using the lattice-rotation model,the screw and edge dislocation densities of the samples were calculated. 通过使用晶格旋转(Lattice-rotation)模型拟合,计算出样品的螺位错密度和刃位错密度。