FACTORS, INFLUENCING UPON VALUE GRAIN and HER (ITS) CHANGE

Abstract

Influence factors, influencing upon value grain and her(its) change. The Growing fetus brings about origin граничащих with each other grain moreover from each fetus will increase grain. The Final size grain depends on the total number fetus

And their distribution in volume of the metal. In turn, the total number fetus depends on velocities of the crystallizations, since if given undercooking since time increases the velocity of the formation fetus that accordingly decreases the volume of the fluid metal.  The Ithaca, number grain are defined by correlation between velocity of their growing. Possible say that size grains much it is difficult to foresee, since he depends on multiple it is difficult defined factor such as velocity of the formation fetus, velocity of their growing and velocity of the cooling on surfaces of the section hard body - a liquid.