结晶潜热

冷却速度和合金成分对ZA合金结晶潜热的影响

Influence of Cooling Rate and Alloy Composition on Latent Heat of ZA Alloy

在对结晶潜热处理的过程中，充分考虑了ZA27合金宽结晶温度范围特点，采用热焓法处理。

The heat-enthalpy method was used to deal with the latent heat allowing for the broad crystallization temperature interval of ZA27 alloy .

考虑结晶潜热的LDPE微结构件注射成型模内温度场

Cavity temperature of LDPE injection molded parts with microstructure region considering latent heat

变质良好时，合金的的凝固温度，共晶温度降低，α（Al）相析出潜热减小，共晶Si相结晶潜热增大。

When best modification obtained , the freezing point and eutectic temperature droped down , while the crystal latent heat of α ( Al ) and Si phases decreased and increased respectively .

利用等效比热法处理了凝固过程中的结晶潜热；

Solidification-heat was modeled by means of equivalent-specific heat method .

采用考虑结晶潜热的微结构件注射成型有限元模型能较准确地预测制品内部温度场分布。

The finite model of injection molded parts with microstructure region considering latent heat can approximatively forecast the cavity temperature .

当亚稳相形成时，组织中的α&Fe相尺寸发生粗化，这是由于超过冷状态形核比一般过冷形核放出的结晶潜热多的缘故。

When metastable phase is formed , more latent heat of crystal makes size of α - Fe phase increased further .

提出石墨在生长过程中由结晶潜热引起棱面与基面的温差是影响其生长形态的重要因素。

It is good for the emanatory of crystallization latent heat and the improvement of the radical resistivity in the crystal .

结果发现，高聚物结晶潜热对温度场的影响比较大，在注射成型数值模拟的时候应该考虑结晶高聚物注射成型过程中的结晶焓；

The comparison demonstrates that heat of crystallization can influence the temperature field greatly , so that heat of crystallization must be considered in injection modeling .

采用温度回升法对任意结晶区间的铸件凝固结晶潜热的数值计算

Numerical calculation for latent heat releases in alloy castings of any solidification range using an extended temperature-compensation method

开发的热传输模型充分考虑了由于气隙的存在而使得结晶器表面散热不均匀，处理了凝固前沿相变所产生的结晶潜热，并采用变热物性参数。

A new model with varied thermal-physical parameters in which the existence of airspace resulting in heterogeneous heat transfer and the latent heat of fusion at the solidification front was considered was developed .