等轴晶

发现沿定向凝固生长方向微观组织依次呈现细等轴晶区柱状晶区粗等轴晶区的演化规律。

It is found that along the growth direction microstructure consist of fine equiaxed grain zone , columnar grain zone and coarse equiaxed grain zone in turn .

测试结果表明：CVD-W生长组织具有三个生长区，分别是等轴晶区、混合生长晶区和柱状晶区；

The test result shows that there are three growing zones in micro-structure of CVD-W : region of equiaxed grain , region of mixed grain and region of columnar grain .

颗粒增强Al－4%Mg复合材料在等轴晶凝固过程中的颗粒推挤

On the pushing behaviour of particulates reinforced al-4 % mg composites during solidification

Al－4%CU铸锭凝固中自由等轴晶的迁移行为及对宏观偏析的影响

Movement Behavior of Equiaxial Dendrites in Solidifying Al-4 % Cu Ingots and Influence on Macrosegregation Freedom

等轴晶ZrO2（Al2O3，Fe2O3）复相陶瓷的制备

Preparation of Equiaxed Grains of Multiphase ZrO_2 ( Al_2O_3 , Fe_2O_3 ) Ceramics

随着Er含量的增加，该焊料合金的组织由树枝晶向等轴晶转变，且组织逐渐细化。

With the increase of Er content , the microstructure of the solder changes from fir-tree crystal to equiaxed crystal and is refined .

同时本文还提出了适合铸锭凝固过程的柱状晶向等轴晶转变（CET）判据。

A columnar-to-equiaxed transition ( CET ) criterion is developed for the case of solidification of ingots .

在CSP的不锈钢铸坯结构中，应主要以较细密的柱状晶构成，而较难有中心等轴晶区的出现。

The structure of stainless steel gotten by CSP technics is mainly the slim columnar dendrite and rarely has center equiaxed dendrite .

结果表明：在快速凝固条件下，形成等轴晶和胞状晶结构，Zr、Cr、Nb元素固溶在过饱和Al基固溶体中。

The results indicate that , the equiaxed and cellular crystal structures were formed under rapid solidification , and Zr , Cr and Nb were retained in Al-matrix supersaturated solid solution ;

3种合金薄片均为细小等轴晶和部分蔷薇状的微细枝晶组成，其晶粒大小为1μm～3μm。随着Si添加量的增加，晶粒大小没有明显的变化。

The three kinds of alloy flakes all exhibited fine equiaxed grains with the grain size of 1 ~ 3 μ m. And the grain sizes have no remarkably difference with the Si contents increased .

柱状晶向等轴晶转变（CET）是在一定的凝固过程中必须控制的一种显微组织转变。

The columnar to equiaxed transition ( CET ) is a kind of microstructural transformation in certain solidification , which should be controlled .

可以预言，采用新四孔SEN浇注，铸坯的等轴晶会有所提高。

It could be concluded that the percentage of equiaxial crystal would increased when the new nozzle with four holes is used in casting .

研究Li对工业纯Cu结晶形态的影响，结果表明：Li能消除合金凝固的枝晶区并使之转变为等轴晶区。

The effect of lithium on casting structures of pure coppers has been researched . The results showed that the dendritic crystal area of alloy was eliminated by Li addition and the equiaxed strcture was substitued for dentritic crystal .

TEM观察表明绝热剪切带（ASB）中心区域由30-70纳米的等轴晶组成。

TEM observation showed that the center of the adiabatic shear band ( ASB ) was composed of recrystallized nano-grains ( about 30-70 nm in diameter ) .

模拟了其TIG焊熔池中心等轴晶和熔池边缘柱状晶的生长，并模拟了等轴晶与柱状晶竞争生长的形态。

The growth of the equiaxed grain in the center of the pool , the columnar grain in the edge of the pool and even the competitive growth between them are simulated .

纳米CeO2在熔覆层中能够细化组织，并且可以抑制树枝晶的生长，促使熔覆层形成了等轴晶；

Are obtained ; the nano-CeO_2 addition can not only refine microstructure , but also restrain the dendritic growth and promote the formation of equiaxed grains ;

研究表明细等轴晶的形成要求特殊的化学成分（含Zr，Li元素）和一定的凝固条件（小的成分过冷度）。

It was found that the existence of a particular solidification condition ( i.e. smaller constitutional undercooling degree ) as well as the elements of zirconium and lithium was necessary for the fine equiaxed smooth grains to form .

随合金元素Zn和A1增加，合金由粗大的树枝晶向细小的等轴晶转变，晶粒尺寸逐渐减小，而晶界处的共晶相数量逐渐增多，尺寸逐渐增大。

With increasing of Zn and Al , the coarse dendrites transite to fine equiaxed grains and the grain size is gradually reduced ; While the number of eutectic phase and its size both gradually increased .

LC9铝合金在773K热扭转中显微组织由粗大的柱状晶转变为细等轴晶。

The coarse column-like grains of LC9 alloy are changed into fine nearequiaxed oneS during torsion at773K .

AZ31B挤压板材无裂纹、无烧损，其组织呈晶粒细小的等轴晶；

The AZ31B sheets are extruded with fine equiaxed grains in microstructure , but without cracks or burning losses .

结果显示，新型模具ZA合金用TIG方法进行焊接，焊缝组织形态主要是柱状树枝晶和少量的等轴晶；

It was shown that after the ZA alloy was processed by TIG welding , the weld seam consists mainly of columnar dendrites and a small amount of equi axial crystals ;

随着NH4Cl水溶液浓度或Al-Si合金中Si含量的增加以及搅拌转速的增加，晶粒细化程度提高，获得分散均匀、细小的等轴晶。

And the extent of refinement was improved as the concentration of ammonium-chloride solution or the silicon content in Al-Si alloy ingots is increasing , and homogeneous and finer equiaxed grains obtained .

选取转角为90°的ECAP模具、挤压路径B、4次挤压可更有效地将晶粒细化为非常细小的等轴晶，并兼顾到较高的生产效率。

After the samples are pressed in the condition of the 90 ° ECAP die , route B and 4 passes , the grains could change to be very fine equiaxed-grains , in addition , the high production-efficiency is also obtained .

SEM观察表明两种合金的氧化膜均由外层的CuO和内层的Cu20组成，但Zr会改变氧化膜的组织形态，1合金的氧化膜内层为等轴晶，而4合金为柱状晶。

SEM observation shows the films of the two alloys are both composed by the outer layer of CuO and the inner layer of Cu2O . But the additional of Zr can change the microstructure of the oxidation film .

AZ31镁合金氩弧焊接头的热影响区和焊缝分界明显，热影响区晶粒较粗大，焊缝为细小的等轴晶，焊缝主要存在α-Mg和β-Mg（17）Al（12）两种相。

The microstructure is fine equiaxed grains in welded zone , which is shown to consist of a-Mg and Mg_ ( 17 ) Al_ ( 12 ), while the microstructure of heat affected zone is coarser .

100kg级规模试验中钢水过热度降低26℃，相应等轴晶率达到80%。

The superheat was reduced by 26 ℃ and equiaxed crystal ratio of 80 % was obtained for 100 kg test .

倾斜式冷却剪切流变制备半固态AlMg合金过程中，合金在冷却板表面非均匀形核，并受到重力的剪切作用，合金组织逐渐从粗大等轴晶网络演化为细小的球形晶；

During manufacturing semisolid Al-Mg based alloy by rheocasting of incline cooling and shearing , melt alloy heterogeneously nucleated on the incline-cooling plate surface and was sheared under the gravity force , and alloy microstructure gradually evolves from big net-work composed of equiaxed dendrites to small spherical grain .

在10T磁感应强度下，交变电流越大，波动越强，越易生成等轴晶和颗粒状晶；

At a magnetic field intensity of10T , the higher the AC current , the stronger the vibration , the more easily the equal-axis grains and the particle grains created .

测试了试块不同部位的a＿（KV）值，发现在与柱状晶接壤的等轴晶区存在约3mm宽的脆性区。

The impact toughness of samples at various locations of the blocks are tested . It has been found that there exists a brittle area of 3 mm in breadth between the equiaxed crystal and the columnar crystal .

在射频溅射条件下沉积了ZrO2膜，发现该膜的柱状晶具有{111}面织构，其底层可能还有等轴晶。

ZrO 2 thin films were deposited with radio_frequency sputtering , a columnar structure layer with { 111 } texture and / or nether uniaxial crystal layer were observed on the films .