усереднений діаметр зерен сталі

It is well-known that the­re is a cle­ar cor­res­pon­den­ce bet­we­en the qua­li­ta­ti­ve cha­rac­te­ris­tics of the me­tal un­der study and its in­ter­nal struc­tu­re. This ma­de it pos­sib­le to eval­ua­te the mec­ha­ni­cal pro­per­ti­es of a me­tal thro­ugh the analysis of its in­ter­nal struc­tu­re. In many ca­ses the si­ze of the gra­in is used as the ma­in pa­ra­me­ter of the me­tal in the analysis of its in­ter­nal struc­tu­re, be­cau­se it has a sig­ni­fi­cant ef­fect on the pro­per­ti­es of the me­tal.