【摘要】 本文介绍了一种金属晶粒细化的新工艺，即利用金属本身已有的非自发形核潜力，使Al，Cu，Sb晶粒细化探讨了金属自身激冷薄片的冷却速度、加入量、保温时间对晶粒细化效果的影响.Al的自身细化效果与加入适量的Al-Ti-B中间合金相当；Cu和Sb的自身细化效果良好.根据金属遗传原理探讨了晶粒自身细化机理.更多还原

【Abstract】 A new technology of grain refinement of metals, self grain refinement, obtained by the utilization of the nucleation potential inherent in commercially pure Al, Cu andSb has been described. The effects of the cooling rate, adding amount and holding time inmolten metal for the rapidly solidified sheet of these metals on self grain refinement have beenexamined. The effectiveness of the self grain refinement of aluminium is equal to that of amaster Al-Ti-B added in the aluminium. Cu and Sb also have the effectiveness of the selfgrain refinement. The mechanism of the self grain refinement of metals has been studied onthe heredity theory of metals.更多还原