undercooling 中文意思是什麼
undercooling
解釋
過度冷卻的-
Continuous cooling transformation of undercooling austenite of swrch22a steel
鋼過冷奧氏體的連續冷卻轉變 -
The rapid solidification process of pb - sn eutectic alloy is investigated with acoustic levitation and the maximum undercooling of 38k has been achieved
採用聲懸浮無容器處理技術研究了pb - sn共晶合金在深過冷條件下的凝固規律。 -
The present thesis has carried out detailed investigation on the rapid solidification of undercooled bulk water and pb - sn binary eutectic alloy with acoustic levitation, and the various factors influencing the achievement of undercooling in sound field have been analyzed
主要取得了以下幾方面的研究成果：研究了5 8mm的大體積水在聲懸浮無容器條件下的快速凝固行為。獲得了最大為24k的過冷度。 -
It is indicated that the improved model can calculate the fraction of ferrite and pearlite more accurately, and can specially reflect the effect of both undercooling during the eutectoid transformation and the amount of graphite nodules formed during the process of eutectic reaction on the fraction of pearlite
結果表明，改進的模型可以更準確地預測球鐵中鐵素體和珠光體的數量，能夠準確地體現共析階段過冷情況和共晶球墨數對珠光體數量的影響。 -
In the isothermal crystallization experiment, the dsc exothermic curves become flat as decrease of the degrees of undercooling within the experimental temperatures
在等溫結晶實驗中，在所測試的結晶溫度范圍內，隨著過冷度的減小， dsc放熱曲線趨于變緩，結晶完成時間延長，結晶速率減小。 -
When the undercooling goes beyond the coupled zone, it is found that the ( pb ) dendrites in the acoustically levitated drops can also appear in the top of the drops and the gravitational macrosegregation is effectively suppressed, which may be caused by the ultrasound and complicated fluid flow inside the drops
發現在小過冷范圍內，由於超聲波的攪拌作用層片共晶組織發生碎斷現象；在大過冷情況下，超聲波可以有效地抑制宏觀偏析的發生。 -
However the cavitation effect induced by ultrasound may prematurely catalyze nucleation, which hinders the further achievement of bulk undercooling. the measured growth velocity of ice dendrite is 0. 17m / s corresponding to the maximum undercooling of 24k
討論了空化效應對水滴過冷度的影響，認為空化效應誘發水滴提前形核，抑制了大過冷度的獲得。 -
Differential scanning calorimeter ( dsc ) combined with melt fluxing technique was used to realize undercooling of melt and its specific heat was measured at the same time, and its thermodynamics were calculated simultaneously and compared to four well - known models
本文將差示掃描量熱法（ dsc ）和助熔劑處理技術相結合，研究了熔體的過冷現象，測量了過冷狀態下熔體的比熱，計算了過冷熔體凝固過程中的其它熱力學參數，並與四種近似模型進行了比較分析。 -
Influence of overheated temperature and cooling rates on the level of undercooling was analyzed respectively
分析了過熱度、冷卻速率分別對過冷度的影響。 -
The current dendritic growth theory is modified so as to be applicable to ice dendritic growth under high undercooling conditions. experimental measurements are in agreement with the theoretical prediction at small undercoolings but exhibit some deviations at large undercoolings due to systemic errors
實驗測定了不同過冷度下冰枝晶的生長速度，並且改進了冰枝晶的生長理論，使之更符合大過冷度時的枝晶生長情況。 -
At a given cooling rate, the degree of undercooling increases with increasing overheated temperature, and tends to be constant at last. it suggests that higher undercooling can be reached by increasing the overheated temperature in a stated range. at a given overheated temperature, the undercooling increases with cooling rates within the range of measurement
在冷卻速率一定的情況下，熔體的過冷度隨著過熱度的增大而增大，而隨著過熱度增大到一定程度，熔體的過冷度趨向于常數；這說明採用dsc與助熔劑處理技術研究熔體的過冷現象時，可以通過在一定范圍內提高過熱度來獲得較大的過冷度。 -
Embedded in a flux of dehydrated b2o3, melts of ge and ag etc. were undercooled by repeatedly treatment of melting and solidifying with a dsc facility, with undercooling of 190 k and 146. 9 k respectively for ge and ag
對半導體ge 、金屬ag等樣品的過冷現象進行了研究和分析。通過助熔劑包裹和反復熔化與凝固處理，實驗得到的ge 、 ag的最大過冷度分別為190k和146 . 9k 。 -
The influences of the rotation of drops forced by orthogonal acoustic waves and the surface vibration on undercooling are analyzed and the conclusion that ultrasound can suppress the undercooling level has been drawn
分析了聲場對過冷度的影響，認為聲波引起的樣品表面振動以及試樣的繞軸自轉都會抑制過冷度的進一步提高，不利於深過冷條件的獲得。 -
The theoretical calculation based on jh and tmk models is accomplished and predicts that the maximum undercooling for cooperative eutectic growth is 199k
發現隨著過冷度的增大， al - cu共晶合金發生「規則共晶?不規則共晶」的組織形貌轉變。
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