Appreciation of Crystal On the Mechanism of Eutectic Structure

When the pulling rates was low as 1 mm/ min, three-phase eutectic structure was observed and characteristic of directional solidification could be found in longitudinal section.

当下拉速率为1mm/min时，合金组织呈现三相共晶结构，纵截面有定向凝固趋势。

According to the results of DSC and microstructure analysis, the more Al content, the higher melting point of the alloy, but the more α phase dendrites, the less eutectic cementite.

从差示扫描量热分析和显微组织得出：随含铝量的增加，合金的熔点提高，α相枝晶增多，晶间的共晶体减少。

The results showed: in the as-cast white iron there was the enrichment of silicon between the eutectic cementite and pearlite.

结果表明：硅在共晶渗碳体和珠光体界面处富集，少量硅进入共晶渗碳体中；

Study on Relation between the Morphology of Eutectic Cementite and Lower Temperature Graphitization of Malleable Cast Iron

共晶渗碳体形态与可锻铸铁低温石墨化的关系及分析

Effect of Si on the Microstructure of Eutectic Cementite in As cast Malleable Cast Iron

硅对可锻铸铁共晶渗碳体显微结构的影响

The alloying elements Ti and C can form TiC directly in the melt which acts as nucleus of cementite and causes both primary and eutectic cementite granulated and refined. So the cementite network in this steel can be eliminated.

Ti和C可以直接在液相中反应形成TiC，并可作为渗碳体的结晶核心，使一次渗碳体和共晶渗碳体发生粒化和细化，从而避免连续网状碳化物的形成。

According to mathematical statistics treatment of data measured from total 2500 fields, it is shown that there are apparent differences between the morphology of eutectic cementite in the two kinds of aforementioned samples.

用数理统计分析了2500个视场的测量结果表明，共晶渗碳体的分布形态在上述两种试样中存在明显差异。

The adsorption of ethylenediamine dinitratc ( EDD) ammonium nitrate ( AN) eutectic liquid on RDX crystal surface were studied by testing the surface energy of RDX and the surface tension strength of EDD AN eutectic liquids with various surfactant.

通过RDX临界表面张力以及硝酸铵（AN）-乙二胺二硝酸盐（EDD）低共熔液（EA）的表面张力测定，研究了表面活性剂对AN-EDD低共熔液在RDX表面的润湿吸附性。

Effect on Cast iron Eutectic Solidification of Primary Crystal Graphite

初晶石墨对铸铁共晶凝固的影响

The microstructure at the top and middle was the regular pine tree eutectic crystal and small cell and column crystal, respectively.

中部为细小的胞晶和柱状晶；

The results showed that the graphite deposited during the period of primary and eutectic crystal helped to reduce the contract of liquid state and solidification, to improve the tendency of shrinkage cavity and porosity.

实验结果表明，初晶、共晶期间析出的石墨有助于减少液态收缩与凝固收缩，改善耐热球墨可锻铸铁形成缩孔缩松的倾向。

In the first stage ( large heating sublimation stage), product temperature lower than the eutectic point of a range.

在升温的第一阶段（大量升华阶段），制品温度要低于其共晶点一个范围。

The analysis result indicates that the interaction of unlike atoms is strengthen in the the eutectic point.

分析表明，在Zn-Bi合金中异类原子间的相互作用在共晶点处显著加强。

After variance analysis, the curves of eutectic point and the concentration were drawn.

对低聚果糖共晶点的测量表明，低聚果糖的共晶点随浓度的增加而降低，通过方差分析得到共晶点和浓度的关系曲线。

Application of eutectic point left movement theory in development of new type cast iron welding electrodes

共晶点左移理论在研制新型铸铁焊条时的应用

The nucleation model of the hypoeutectic, eutectic and hypereutectic spheroidal graphite iron is developed considered with their solidification process respectively.

针对不同类型的球墨铸铁的凝固过程，建立了亚共晶、共晶和过共晶球墨铸铁的形核率计算模型。

The eutectic cells of vermicular graphite were characterized by their irregular shapes, unequal dimensions and nonuniform distribution.

蠕墨共晶团具有外形不规则、尺寸不均一和分布不均匀的特点。

To solve the problem how to produce iron castings having hi-strength and thin-sections namely how to increase quantity of dendrites, how to reduce size of eutectic cells and graphite flakes, as well as how to strengthen the matrix under the condition of relatively high carbon equivalence.

要解决铸铁高强度化、薄壁化的问题，就是要在较高碳当量条件下，增加枝晶数量、细化共晶团、细化石墨和强化基体。

The results show that when Al content is 4.25%, the graphite content is high, the eutectic graphite is the main morphology and the matrix of the alloy is single γ-Ni ( Al) solution.

结果表明：当Al含量为4.25%时，凝固组织中的石墨含量较高，且以共晶石墨形态为主，基体为单相-γNi（Al）；

With the increase of Al content, the graphite content and eutectic graphite of solidifying structures deduce, graphite in primary phase has a tendency of spherical transformation.

随着Al含量的增加，凝固组织中的石墨含量有所降低，共晶石墨减少，初生相中石墨占多数并有球化的趋势；