晶

One undercooling criterion of equi-nucleation is derived from analysis of Gaussian distribution model of heterogeneous nucleation.

通过对高斯异质形核公式的研究，给出了等轴晶开始形核的过冷度判据，更为准确的描述柱状晶向等轴晶的转变过程。

Using domain model of glass-covered Co-rich amorphous wires,it can be explained by the magnetization process that the GMI becomes acutely with longer length.

利用玻璃包覆钴基非晶丝的磁畴模型，分析不同长度时玻璃包覆钴基非晶丝的磁化过程，合理解释了GMI效应随玻璃包覆钴基非晶丝长度增加而明显的现象。

The results indicate that the flow stress of the alloy increases with increasing strain rate and decreasing deformation temperature. The flow stress increases with increasing strain until the stress reaches the peak value, then the flow stress remains constant, which indicates that dynamic recrystallization happens during deformation. The flow behaviors are described by the hyperbolic sine constitutive equation, and the activation energy calculated is 337.75 kJ/mol. The as-forged microstructure consists of refined α2/γ and γ grains, and the grains are much homogeneous than before. The B2 phase distributes uniformly at the grain boundary of α2/γ and γ grains. The B2 phase decreases with increasing deformation temperature.

结果表明：流变应力随着应变速率提高和变形温度降低而增大；在变形过程中，流变应力随着变形量增大而增大，当流变应力达到峰值后趋于平稳，表明合金在变形过程中发生了动态再结晶；热变形过程的流变应力可采用双曲正弦本构关系来描述，平均激活能为337.75 kJ/mol；从合金的组织演化过程中可以看出，合金中不均匀的原始组织得到明显均匀化，变形后的组织是由α2/γ层片晶团和γ晶粒组成的双态组织，在α2/γ层片晶团和γ晶粒的晶界交界处发现分布均匀的B2相，并且随着变形温度升高B2相数量逐渐减少。

Effects of P modification on primary Si in hypereutectic Al-Si die casting alloy with different cooling rates were investigated.

以过共晶压铸铝合金为对象，研究了P变质对不同冷却速度下初晶Si组织的影响。发现P变质处理前后随冷却速度的增加，初晶Si尺寸减小的变化趋势十分相似，并且都存在一个明显的突变区域。

According to the 2-liquid immiscibility hypothesis and the study of devitrificationof system ZnO - Al_2O_3 - SiO_2, the authors have successfully made glass- ceramic s bymeans of addition of B_2O_3 and obtained a glass- ceramic composition № 6307 of prac-tical value.

作者利用二液分相的原理，在研究了ZnO-Al_2O_3-SiO_2系统玻璃析晶条件的基础上，用添加B_2O_3的方法成功地制得了微晶玻璃，获得了一个具有实用价值的№6307微晶玻璃组成。

According to the 2-liquid immiscibility hypothesis and the study of devitrificationof system ZnO - Al_2O_3 - SiO_2, the authors have successfully made glass-ceramics bymeans of addition of B_2O_3 and obtained a glass-ceramic composition № 6307 of prac-tical value.

作者利用二液分相的原理，在研究了ZnO-Al_2O_3-SiO_2系统玻璃析晶条件的基础上，用添加B_2O_3的方法成功地制得了微晶玻璃，获得了一个具有实用价值的№6307微晶玻璃组成。

By means of forced synchronization of current in thyristor branch with the line current, the mode switching from capacitive mode to Bypass can be implemented. In the switching strategy from capacitive mode to inductive veriner mode, a method of thyristor conditional firing is put forward. The thyristors will be fired and conducted on condition that both line current and capacitor voltage are inphase.

通过强制晶闸管支路电流与线路电流同步，实现由容性区到Bypass模式的切换；在由容性区到感性微调模式切换的过程中提出了晶闸管条件触发的方法，即当线路电流和电容电压满足同向条件时晶闸管才触发导通。

The structure and thermodynamics of liquid Au and AuCu alloys have been simulated using molecular dynamics method based upon the EAM interatomic potential to reveal the influence of the mismatch in atomic size on the glass forming ability.

近年来，非晶合金由于有较好的延展性和抗腐蚀性，得到了广泛的应用犤1犦。Duwez犤2犦首次制成金属非晶，Inoue犤3-4犦将非晶的获得归纳为三条基本规律，这为选择合金元素提供了有益的指导。

When increasing PEO content or molecular weight, although the confined environment is extended and PEO can crystallize, the crystallization of PEO is still retrained and crystallization temperature decreases to 5℃, 35℃lower than the crystallization temperature of neat PEO, forming POM/PEO interfibrillar segregation.

随PEO含量或分子量提高，POM微纤晶间距增大，球晶尺寸增大；继续增大PEO的含量和分子量，PEO形成独立的球晶结构。3。

Some amorphous binary alloy films have been successfully grown by ion beam assisted deposition .

本文阐述了用离子束辅助沉积技术制备非晶合金薄膜的基本思路，介绍了本研究组在二元合金系统里制备非晶和亚稳晶相的研究结果。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。