材料期刊网

研究了经过不同压下量的电解纯铜,在保留着表面机构和去除表面机构的条件下,样品厚度对再结晶机构的影响.样品经过88.7—99.7%轧制后,厚度在0.84—0.02毫米范围内时,在900℃退火后都可以得到集中的立方机构.经过99.8%轧制、厚度为0.01毫米的样品,在900℃退火后得不到集中的立方机构.但已具有立方机构的样品,再轧制到0.01毫米(压下量为98.6%),经900℃退火后就可以得到比较集中的立方机构。样品厚度对再结晶机构的影响,也因压下量不同而不同.当压下量较小时(88.7%),样品減薄到0.04毫米以下,在900℃退火后,得不到集中的立方机构。但在压下量为96—99.7%的样品中,減薄样品厚度,对再结晶机构并沒有显著的影响.減薄样品厚度,对二次再结晶产生了阻碍作用,但对二次再结晶机构的取向并沒有显著的影响.

The effect of thickness of specimen on the recrystallization texture of cold-rolledcopper strips under different percentage of reduction and with or without the surfacelayer has been investigated.The recrystallization texture of specimens of 0.84—0.02mmin thickness corresponding to a reduction of 88.7—99.7%,was found to have a nearlyperfect cubic texture.No concentrated cubic texture was observed in the specimens of0.01mm in thickness under a reduction of 99.8%.However,for specimens with cubi-cally aligned grains,cold-rolled to 0.01 mm in thickness(under a reduction of 98.6%),a rather concentrated cubic texture was developed after annealing at 900℃.The effect of strip thickness on the recrystallization texture has been found to bedifferent for different percentage of reduction.Under a smaller reduction of 88.7%,the specimens,less than 0.04mm in thickness,did not give a concentrated cubic texture.Whereas,for specimens under larger reduction(96—99.7%),no significant effect of stripthickness on the development of recrystallization texture was observed.The decreasing in thickness of specimens suppresses the occurrence of second re-crystallization but no pronounced effect on the grain orientation of the second recrystal-lization texture has been noticed.