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。
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。
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。
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
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。
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。
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。
Semi-solid isothermal treatment is thought as a potential technology in the manufacturing nondendritic structure alloy slurry,the research of this technology is helpful to enrich the theory of semi-solid metal forming and to accelerate the application of this technology.
半固态等温热处理作为一种比较有发展前途的非枝晶组织坯料制备方法,对其展开研究将有助于丰富半固态金属成形理论和加速该技术的工业化应用。
The effect of various parameters, for example, stirring intensity, locality and cooling rate etc, on the non-dendritic structure form of Al-6.
6%Si亚共晶合金非枝晶组织形成的影响,并利用图像分析仪对试样单位面积上的颗粒数进行了定量的测量。
This paper introduced the key technology of SSP(semi-soild process) thixomolding of magnesium alloys : the preparation of non-dendritic structure,reheating,thixomolding.
介绍了镁合金半固态触变成形技术中的三个关键技术:非枝晶组织半固态浆料的制备、坯料的二次加热、半固态触变压铸成形。
Semi-solid isothermal treatment is thought as a potential technology in the manufacturing non-dendritic structure alloy slurry, the research of this technology is helpful to rich the theory of semi-solid metal forming and accelerate the application of this technology.
半固态等温热处理作为一种比较有发展前途的非枝晶组织坯料制备方法,对其展开研究将有助于丰富半固态金属成形理论和加速该技术的工业化应用。
Determination of Microstructural Parameters of Dendritic Microstructure of Continuous Casting Billet and These Parameters' Applications
连铸坯枝晶组织参数的测定及其应用
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
The Research on Magnesium Alloy Semi-solid Non-dendritic Structure and Die Casting Process;
镁合金半固态非枝晶组织制备及压铸工艺研究
Non-dendritic Structure of Fine Grained Magnesium Alloys Treated with Isothermal Heat Treatment
基于等温热处理工艺制备细晶镁合金非枝晶组织
Study on Effect of Solidification Parameters on Dentritic Structure and Mechanical Properties in Ni-Based Superalloys;
镍基高温合金凝固参数对枝晶组织与性能的影响
Research on Electromagnetic Fabrication and Mechanics Properties of Non-dendritic Microstructure AZ91D Magnesium Alloy with Alloying Elements;
微合金化非枝晶组织AZ91D镁合金的电磁制备及力学性能研究
Fabrication and Mechanism of Non-dendrite Structure in Semi-solid ZL101 Alloy by Controlled Pouring Temperature
控制浇注温度制备的半固态ZL101合金的非枝晶组织
The results indicated that the microstructure of the transition layer is a structure of fine columnar crystal-cystiform dentrite-dentrite.
结果表明,梯度过渡层的组织形态为细小的柱状晶-胞状树枝晶-树枝状晶。
Formation Mechanism of Non-Dendritic Semi-Solid Microstructure by Inclined Slope Pre-Crystallization Method
斜坡预结晶法制备非枝晶半固态组织形成机制探讨
Microstructure Simulation of Unidirectional Solidification Based on Dendrite Envelope Tracking Method;
基于枝晶包膜跟踪法的单向凝固微观组织模拟研究
Rationally Designed Syntheses and Self-Organized Superstructure Investigations of Liquid Crystalline Dendrimers
树枝状大分子液晶的分子设计及其自组织超结构
retrolental fibroplasia
晶状体后纤维组织增生
Microstructure of Surface Recrystallization of Single Crystal Superalloy DD6
单晶高温合金DD6表面再结晶组织
Synthesis of Dendritic Thiol Materials
树枝状硫醇分子合成及树枝状硫醇/金组装膜取向液晶能力计算
4. The branch shape crystallite is mainly composed of iron oxides, i. e. magnetite.
(4) 树枝状晶体主要是由铁的氧化物——磁铁矿组成。
Study on Biological Characteristics and Tissue Culture in Vitro of Rosa rugosa‘Purple Branch’
紫枝玫瑰的生物特性与组织培养研究
The Study for the Effect of Recrystallization Annealing on Structure and Texture of IF Steel;
再结晶退火对IF钢组织、织构影响的研究
Structure and Properties Study on Laser Crystallization of Amorphous TiO_2 Thin Film;
激光晶化二氧化钛非晶薄膜组织与性能研究