1) periodic diphase dendritic structure
周期性双相枝晶组织
1.
This structure is named periodic diphase dendritic structure.
对试样组织形貌进行分析,发现了一种由α-Al(暗相)和Al11La3(亮相)两相交替出现的枝晶组织,沿枝晶主干方向成分呈周期性变化,称这种组织为周期性双相枝晶组织;而且这种枝晶组织主干方向与凝固方向一致,证明这种枝晶确实存在。
2) diphase dendrite structure
双相枝晶组织
1.
Along their growth direction, the composition of the dendrite exhibits periodic behavior, so this structure is named as periodic diphase dendrite structure.
通过线扫描分析表明,枝晶主干上化学成分呈周期性变化,因此,称其为周期性双相枝晶组织。
3) dendritic structure
枝晶组织
1.
Holding time when dendritic structures disappeared was great.
预变形可大大缩短枝晶组织消除所需的保温时间。
2.
Effects of diffusion annealing on dendritic structure,forging filamentary microstructure and impact toughness of Cr-Mo low alloy steel ingot were studied.
25V钢锭枝晶组织、锻造纤维状组织以及锻件冲击韧性的影响。
3.
The non-dendritic structure ZA12 alloy with ideal thixotropic behaviour was obtained by isothermal heat treating the conventional ingots in semi-solid states- The relationship between the parameters of heat treatment and the microstructure was investigated.
将初生相为枝晶形态的常规ZA12合金铸锭重新加热到半固态进行等温热处理，可获得具有良好触变性的非枝晶组织合金。
4) dendrite structure
枝晶组织
1.
Formation mechanism of the discontinuous dendrite structure in Al-La alloys
Al-La合金不连续枝晶组织形成机理
2.
In this paper, effects of new grain refiners on dendrite structures, microsegregation and precipitated phases of cast superalloy K4169 have been studied.
研究了新型晶粒细化剂对 K41 69高温合金枝晶组织、元素显微偏析和合金相的影响。
3.
The effects of foundry variables and refiners on dendrite structures, micro segregation, inclusion and microporosity of cast superalloy K4169 have been studied.
铸造工艺参数和细化剂对K4169合金枝晶组织、元素偏析、夹杂及缩松有明显的影响,浇注温度越低,一次枝晶主轴长度和二次枝晶臂距就越小,在同一浇注温度下,化学法细晶试样的一次枝晶主轴长度较普通铸造试样的短,但二者的二次枝晶臂距没有明显差别,晶粒细化后,合金中主要元素Fe,Cr,Nb,Mo和Ti的偏析减轻,晶粒的形态由树枝晶向细晶组织中的粒状晶转变,对晶粒球化现象做了合理解释,微量细化剂的加入不会在铸件中形成夹杂,不会改变合金的相组成,在高的浇注温度下,细化剂使晶粒细化的同时,也使铸件中的缩松大大减少。
6) Non-dendrite Structure
非枝晶组织
1.
The result showed that, by adopting proper pouring temperature, chilling the molten metal before mould filling, and properly vibrating the supercooled molten metal, it is possible to obtain spheroidal or quasi-spheroidal non-dendrite structure of proeutectic austenite; and, under the condition of low temperature pouring with a slope plate cooler, the molten metal washing, flowing and.
结果表明:通过控制合适的浇注温度,并对充型前的金属液进行激冷处理,同时对过冷的金属液配以适当的振动,可以获得球形或近球形的先共晶奥氏体非枝晶组织;在带有倾斜板冷却体的低温浇注情况下,金属液的冲刷、流动及振动使熔体获得了均匀的溶质场和温度场,抑制了发达的先共晶奥氏体枝晶的形成,为球状晶的获得提供了条件。
补充资料：周期性
周期性
periodicity
①事物反复有规律的变化，每一次变化称为一个周期。如生理状态下的心动周期、呼吸周期、月经周期等。②疾病过程中临床症状多次重复出现的规律性。如周期热、溃疡病周期性上腹部疼痛等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条