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eutectic
相关语句
  共晶
    Microstructure and Property of eutectic superalloy directionally solidified under high temperature gradient
    高梯度定向凝固共晶高温合金的组织与性能
短句来源
    Microstructure and Mechanical Properties of NiAl-based Eutectic Alloys and Alloying Behavior of Rare Earths
    NiAl基共晶合金的组织和力学行为及稀土合金化研究
短句来源
    The Investigation of Freezing Rates and Microstructures of InSb-NiSb Eutectic Composite
    InSb-NiSb共晶复合材料定向凝固速度与其显微组织的研究
短句来源
    A Study of the Effect of Sodium on Modified Mechanism of Eutectic Silicon Phase Under the Directional Solidification
    定向凝固下钠对共晶硅相变质的研究
短句来源
    Intensification of the Modificating Effect of Mischmetal by Mg Addition in Al-Si Eutectic Alloy
    Al—Si共晶合金中镁对稀土变质作用的激化
短句来源
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  共晶体
    2. The growth morphology of Cu-Cr eutectic are studied. During the process of eutectic growth, (α+β) growth is clinging to a phase.
    2 揭示了Cu-Cr共晶的生长形态,发现其在共晶生长过程中,共晶体(α+β)依附在α相上生长;
短句来源
    It was dispersed in the matrix phase . At the rate of 0.6mm/min, the two phases of Si-TaSi2 system was grown eutectic regularly.
    区熔速率R=0.6mm/min,Si—TaSi_2共晶体两相形成规则共晶。
短句来源
    The filamentary composite structures of Cu-6%Ag, Cu-6%Ag-0.2%Zr and Cu-24%Ag composites all evolve from the primary a grains, eutectic colonies and secondary precipitates in the original as-cast structure during heavy drawing strain.
    在对不同成分的Cu-6%Ag、Cu-6%Ag-0.2%Zr和Cu-24%Ag合金的研究中,合金复合纤维相结构均由强烈变形的初生a基体、共晶体和次生相组成。
短句来源
    It was discovered that the leading phase Si in the (Al+Si) eutectic tends to nucleate and grows preferentially at the SiC surface, thus forming the characteristic “interfacial Si”, and the SiC/Si interfaces.
    (Al+ Si) 共晶体中的共晶领先相Si 优先在SiC表面上形核、长大, 形成界面Si, 并形成大量SiC/Si 界面。
短句来源
    Al_2O_3·SiO_2 fibre can be taken as a substrate of heterogeneous eutectic nucleation of the zinc alloy,and the silic phase in fibre/matrix interface is prior to growing in couple growth during solidification,which realizes the Al-Si eutectic transformation and Zn-Al eutectic transformation in the composites.
    在凝固过程中 ,Al2 O3 ·SiO2 纤维可作为锌合金共晶体非自发形核的衬底 ,纤维 /基体界面上的硅在共晶体的共生生长过程中起了领先相作用 ,导致复合材料的共晶转变由铝硅共晶转变和锌铝共晶转变两者组成
短句来源
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  “eutectic”译为未确定词的双语例句
    THE STRUCTURE AND PROPERTIES OF CONTINUOUS DIRECTIONAL SOLIDIFICATION Al-Si EUTECTIC IN SITU COMPOSITES
    Al-Si 共晶系连续定向凝固自生复合材料的组织与性能
短句来源
    Effect of Micro-Sodium on Solidification Process of Al-Si Eutectic Alloys
    微量Na元素的变质作用对Al-Si合金凝固过程的影响
短句来源
    Orientation of Graphite Flake in In-Situ Composites of Fe-C Eutectic Alloy
    Fe-C自生复合材料中石墨晶体取向的测定
短句来源
    The Preparation and Mechanical Properties of Fe-C Eutectic In-situ Composites
    Fe-C自生复合材料的制备及力学性能
短句来源
    The Design and Making Process and Mechanical Properties of Fe-C Eutectic In-Situ Composite Materials
    Fe-C自生复合材料的设计、制备及力学性能研究
短句来源
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  eutectic
Directional solidification of metal-gas eutectic and fabrication of regular porous metals
      
Directional solidification of metal-gas eutectic (Gasar) is a novel process for making regular porous metals.
      
This process is based on a solid-gas eutectic reaction involving a gaseous medium and a metal or ceramic phase.
      
As a result, the residual liquid film still maintains a great thickness at the moment when temperature is down to the eutectic point, which will promote HAZ micro-fissuring.
      
Acoustical Properties of Glasses with the Eutectic Composition Si20Te80 and Different Degrees of Crystallinity
      
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Thermal analysis is an important method for assessing and controlling the quality of cast metals. The results herein given are a preliminary approach in recent researches on the nodularity of pearlitic ductile cast iron and the relationship between the characteristic temperature values on the cooling curve and the nodularity is investigated. The temperature criterion for quickly distinguishing three different types of nodular graphite before casting and a theoretical analysis based on modern eutectic solidification...

Thermal analysis is an important method for assessing and controlling the quality of cast metals. The results herein given are a preliminary approach in recent researches on the nodularity of pearlitic ductile cast iron and the relationship between the characteristic temperature values on the cooling curve and the nodularity is investigated. The temperature criterion for quickly distinguishing three different types of nodular graphite before casting and a theoretical analysis based on modern eutectic solidification pattern and spheroidizing theory of graphite have been proposed.

热分析法是检验和控制铸造合金质量的重要方法.本文介绍了热分析法测试珠光体球墨铸铁球化率的研究成果.指出冷却曲线上温度特征值与球化级别的对应关系.初步确定生产中快速分辨三种球化级别的温度判据.运用近代共晶凝固模式和石墨球化理论对温度判据进行了理论分析.

Based on numerous experiments, various kinds of graphite-morphology obtained by the treated commercial cast iron melt with cerium or lanthanum, gaining some knowledge of the spheroidizing ability and the spheroidizing effect of inoculating silicon on the graphite. Experiments show that the treatment of commercial cast iron melt with spheroidizing element is a necessary condition for the formation of spherulitic graphite, a full condition is the spheroidizing agent and inoculant. The inoculating silicon has an...

Based on numerous experiments, various kinds of graphite-morphology obtained by the treated commercial cast iron melt with cerium or lanthanum, gaining some knowledge of the spheroidizing ability and the spheroidizing effect of inoculating silicon on the graphite. Experiments show that the treatment of commercial cast iron melt with spheroidizing element is a necessary condition for the formation of spherulitic graphite, a full condition is the spheroidizing agent and inoculant. The inoculating silicon has an ability to help the graphite in spheroidization.It is proposed that (0001) plane of graphite-microcrystal with screw growth and its (1012) or (1013) plane with twin-branch growth are the model of spherulitic graphite growth. Malformation of primary spherulitic graphite results from development of twin-branch. During eutectic crystallization, malformation of spherulitic graphite depends on the conditions of crystallization front.

本文在大量实验的基础上,分析用铈、镧处理工业铁水得到的各种石墨形态,初步查明了铈、镧对石墨的球化能力和孕育硅对石墨的球化作用。实验指出:工业铁水中加入球化元素是形成球状石墨的必要条件,而充分条件是加入球化剂和孕育剂,孕育硅有促进石墨球化的能力。 文中提出:石墨微晶(0001)面螺旋生长和(1012)或(1013)面事晶分枝是球状石墨的生长模式。初生球状石墨的变异是孪晶分枝发展的结果,共晶结晶时,球状石墨的变异与石墨结晶的前沿条件有关。

Addition of Hf to a superalloy is one of the effective approaches to improve its mid-temperature properties. Based on R-alloy the apparent variations of the microstructure and phase composition in the alloy after addition of Hf were studied. As a result, in Hf-bearing alloy nearly 90% of Hf were dissolved into γ' phase, the rest were dissolved into the carbides and formed a small amount of Ni5Hf phase, and a trace of Hf went into the alloy matrix. As a result of dissolution of large quantity of Hf into γ' phase,...

Addition of Hf to a superalloy is one of the effective approaches to improve its mid-temperature properties. Based on R-alloy the apparent variations of the microstructure and phase composition in the alloy after addition of Hf were studied. As a result, in Hf-bearing alloy nearly 90% of Hf were dissolved into γ' phase, the rest were dissolved into the carbides and formed a small amount of Ni5Hf phase, and a trace of Hf went into the alloy matrix. As a result of dissolution of large quantity of Hf into γ' phase, the amount of γ' phase (including γ'+γ eu-tectic phase) increased from 62 wt%(R-alloy) to 64 wt%(1.5%Hf RH-alloy, the solution temperature of γ' phase increased by about 40℃, and the high temperature mi-crohardness of RH-alloy was obviously higher than R-alloy. As Hf was concentrated in the interdendrite region, the amount of the (γ'+γ) eutectic increased from 8 vol% (R-alloy) to 18 vol% (RH-alloy), therefore, the increase of eutectic (γ'+γ) contributed virtually to the increase of v'.Addition of Hf caused the morphology of the MC and M3B2 to convert from the forms of "script" or skeleton to those of plate or block and the solidusliquidus of the alloy to lower and the mushy region to broaden by approximately 10℃.

添加铪是改善合金中温性能的有效途径之一。本文在R合金基础上研究了加铪后合金中显微组织和相组成发生的明显变化。合金中约有90%的铪溶入γ′相中,其余溶入碳化物及形成少量的Ni_5Hf相,而在基体中溶入甚微。铪大量进入γ′中,使γ′〔(包括共晶(γ+γ′)〕数量增加,从未加铪的R合金的62wt%,增至加铪的R_H合金的64wt%,提高了γ′固溶温度约40℃,高温显微硬度明显的高于不加铪的R合金。由于铪富集于枝晶间,使共晶(γ+γ′)数量从R合金的8vol%增至R_H的18vol%,所以γ′数量的增加实际上是共晶(γ+γ′)数量的增加。铪的加入使MC和M_3B_2,形态从“草书体”或骨架状向块状或条状转变;降低了固液相线,扩大了两相区约10℃。

 
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