equiaxed grain

Fatigue behavior of the joint was improved due to fine equiaxed grain and narrow heat effect zone inhibiting formation of slide-zone and propagation of crack .

搅拌摩擦焊接头具有细小的等轴晶粒和狭窄的热影响区，阻碍了滑移带的形成和裂纹的扩展，从而提高了接头的疲劳性能。

The as-deposited microstructure reveals an equiaxed grain morphology , and the grain size decreases with increasing atomization gas oxygen content and is affected by the superheat temperature and small additions of Zr .

结果表明：沉积态的微观组织由等轴晶粒组成，晶粒尺寸随着雾化气体中O2含量的提高而减小，过热温度和微量Zr元素的添加对晶粒尺寸也有一定的影响。

Electromagnetic constrained forming technology and the formation mechanism of its product : equiaxed grain structure

电磁约束成型技术及所制备材料等轴晶组织的形成机制

Research on treating procedure of equiaxed grain crystallizing for austenitic stainless steel welding

奥氏体不锈钢焊缝组织等轴晶化处理方法的研究

Adding low carbon nucleating agents into high carbon steel grade can only enlarge equiaxed grain zone .

对高碳钢，中碳铁合金形核剂既可扩大等轴晶区，又可细化晶粒；

The results proved that there are little segregation and less defects in the samples of high equiaxed grain rate .

分析结果证明，具有较高的等轴晶率的方坯具有较均匀的成分分布和较少的缺陷。

The equiaxed grain ratio decreases with increasing superheat and presents reverse " S " shape .

铸轧带的等轴晶率随着过热度的升高而减小并呈反S型变化。

Forming process analysis of equiaxed grain in weld nugget zone during friction-stir welding of aluminum alloy

铝合金搅拌摩擦焊接头焊核区等轴再结晶组织的形成机制

Findings indicate that deposit state mostly from by equiaxed grain and the average diameter is 22 μ m.

研究结果表明，沉积坯主要由等轴晶构成，晶粒平均直径为22μm。

The rotational dynamic recrystallization ( RDR ) mechanism can explain the fine equiaxed grain formation in ASB .

利用旋转动态再结晶（RDR）机制可以较好解释了实验中剪切带内等轴细晶的形成；热力学计算及剪切带内部电子衍射花样的结果均显示实验中剪切带内并未发生α-β相变。

The results show that adding medium carbon nucleating agents into high carbon steel grade can effectively enlarge equiaxed grain zone and fine grain size ;

研究结果表明，向钢液中加入形核剂可有效地扩大等轴晶区。

A physical model of the forming process of equiaxed grain in weld nugget zone during friction stir welding of aluminum alloy was established .

建立了搅拌摩擦焊铝合金接头焊核区等轴再结晶组织形成过程的物理模型，详细阐述了焊核区的组织形成过程。

The microstructure of copper clad aluminum wire by drawing at room temperature is vimineous grain as fibril shape from prime equiaxed grain .

经室温拉拔的铜包铝线的显微组织是纤维状细长晶粒，晶界面积增大系数与形变量近似地成正比。

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 .

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。

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 .

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 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 .

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。

However , annealing at 500 ℃, the recrystallization happens prior to precipitation , the precipitation is independent of the cold deformation reduction and a fine , equiaxed grain structure is obtained .

而在500℃退火时，再结晶发生在析出之前，析出与冷轧变形量无关，并可获得晶粒细小的再结晶组织。

By combining with theory of fast cooling , the main reason lies in the fact that the solidification microstructure would grow up towards equiaxed grain under lower laser power and smaller laser beam diameter ;

结合快速凝固有关理论，分析主要是因为在激光功率低，光斑直径较小等工艺参数条件下，凝固组织形成有利于等轴晶的生长方向所致；

While grain structure inside the stainless steel gauze are all equiaxed grain structure . Only the sample poured at 625 ℃ has fine structure , then the grain size increases dramatically with the increased pouring temperature .

金属丝网内的晶粒结构均为等轴晶，但只有625℃浇注的试样的晶粒细小，然后随浇注温度的增加而明显增加。

ε phase is in the shape of column , A phase is equiaxed grain ,γ′ phase is granular ,α and Fe 3C are island , Fe 3O 4 is in the surface porosity .

ε为柱状晶，γ′为颗粒状，A为等轴晶粒，α和Fe3C呈孤岛状，Fe3O4存在于表面疏松中；

The experimental results showed that the greater the intensity of electromagnetic field ( namely the greater the intensity of EMS ), the greater the ability of heat exchanger and the more favorable the alloy structure with the equiaxed grain .

研究表明：增大电磁场强度，即电磁搅拌强度越大，将使金属液流动越强烈、熔体热交换能力越强，越有利于合金组织以等轴晶生长方式生长。

After the temperature change : ingot microstructure of Al-5 % Cu alloy consisted of four part : fine grain region 、 columnar grain region 、 columnar grain and equiaxed grain mixed region 、 equiaxed grain region .

温度场改变后，合金铸锭组织改为四部分组成：细晶区；柱状晶区；柱状晶与等轴晶混合晶区和标准等轴晶区。

In order to increase proportion of equiaxed grain of billet and refine the solidification structure , physical analogue and casting experiments have been carried out with 30 % NH_4Cl aqueous solution and ferritic stainless steel respectively .

为了提高铸坯的等轴晶率、细化凝固组织，以30%氯化铵水溶液和铁素体不锈钢为研究对象，分别进行了物理模拟和浇注实验。

With vibration strengthening , the zone of equiaxed grain gradually increases and the zone of column grain gradually decreases . When the power of vibration reached 81.87N , the grains of aluminum became equiaxed grain in full section of casting .

随着振动的加强，纯Al中心的等轴晶区逐渐增大，边缘部位的柱状晶区逐渐减小，当振击力达到81.87N时整个试样端面全部变为等轴晶。

The results show that : the microstructure of the microwires cooled by air is observed to be equiaxed grain , and the grains of pure copper core cooled by water array along the axis of the microwire orderly like the bamboo ;

结果表明：在空气中自然冷却凝固的纯铜芯丝内部组织为细等轴晶，加冷却水快速冷却凝固制备的纯铜芯丝内部的晶粒沿着微丝长度方向呈竹节状整齐排列；

For the purpose of insuring the welding structure to be changed into fine equiaxed grain completely , the pre-deformation amount of the reduction diameter rate must be great than 9 . 40 % , and the optimum annealing temperature zone should be within 980 ~ 1 000 ℃ .

为了保证焊缝组织完全转变为细小的等轴晶组织，预变形量应在9.4%以上的减径率，并且最佳退火温区应在980～1000℃以内。

The constitutive relation of Superplasticity of metal with uniform equiaxed fine grain

均匀等轴细晶金属超塑性本构关系

The results indicate that the initial ferrite microstructure gradually developed into the equiaxed submicrometer grain microstructure with high angle boundaries with increasing the pass number .

结果表明，铁素体组织随变形道次的增加逐渐演变为等轴状大角度晶界的亚微晶组织；

The result indicates that the spray-forming could refine the grain structure without macrosegregation , the microstructure was the uniformly distributed equiaxed fine grain with fine dispersed phase in it .

结果表明：喷射成形工艺可显著细化高镁铝合金的晶粒，无宏观偏析，显微组织为细小均匀的等轴晶，晶内均匀分布着细小的弥散相；

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 .

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。