结果表明，奥氏体的再结晶发生在钢的正常淬火温度以上的一个温度范围，并在该范围内存在晶粒细化效果最佳的温度区域；
The results showed that the austenite recrystallization occurs in a temperature range biger than thenormal quenching temperature and there is an optimum temperature range for the grain refining.
研究结果表明，冷却强度是晶粒细化的最主要因素，极差为57.946，可信度达到99%，其次是保温时间与浇注温度。
The results indicate, the main factor for grain refinement is cooling intensity, its polar odds is 57.946 and reliability is 99%. The next facts are preservation time and pouring temperature.
金相试验表明，适当降低轧制温度有利于晶粒的细化，从而改善钢材的力学性能。
Metallographic experiment indicate that reducing the rolling temperature properly is propitious to thin crystal, consequently the mechanical performance of steel products is also improved.
探讨了铝液变质、晶粒细化、浇注温度及聚苯乙烯模样等对消失模铝铸件针孔的影响。
The effects of modification, grain refinement, polystyrene pattern, pouring temperature on aluminum alloy porosity in LEC process is studied.
结果表明：随着冷却速度的增大，相变开始温度和结束温度均降低，晶粒明显被细化。
The results show that, when cooling velocity increases, the beginning temperature and the finishing temperature of phase transformation are both decrease, the grain is obviously refined.
结果发现，随镍铜量或镍铜比的增加，烧结温度下降，合金的晶粒球化、细化。
The results show that the sintering temperature decreases and the alloy grain is spheroidized and is refined with the increase of Ni and Cu or the ratio of Ni to Cu.
变形温度高则回复快，晶体缺陷消失速度快，不利于晶粒的细化，甚至还会出现晶粒长大现象。
This adversely affects the ability of ECAP to refine grains as it depends on accumulated dislocations and other defects to form ultrafine grains.
变形温度高则回复快，晶体缺陷消失速度快，不利于晶粒的细化，甚至还会出现晶粒长大现象。
This adversely affects the ability of ECAP to refine grains as it depends on accumulated dislocations and other defects to form ultrafine grains.
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