微量元素Sc对工业纯铝再结晶的影响
来源期刊：中国有色金属学报1998年第1期
论文作者：张迎晖 孝云祯 马宏声
文章页码：85 - 88
关键词：Sc 工业纯铝 再结晶 亚晶聚合
Key words：Sc , industrial pure aluminum , recrystallization , subgrain coalescence
摘 要：对一种含钪0.246%的工业纯铝冷轧70%后进行了再结晶研究，测定了材料在各种温度下保温1h，水淬后的硬度及电导率值，参照X射线衍射的结果，发现材料的再结晶起始温度为380℃, 终了温度为450 ℃。 TEM研究表明, 弥散分布的ScAl3相对位错的钉扎作用是材料再结晶温度高的原因；再结晶过程为亚晶聚合形核机制.
Abstract: Recrystallization of a Sc-bearing industrial pure aluminum has been studied, and the samples have been rolled to 70 percent reduction after hot rolling. Hardness and conductivity were measured after annealing at various temperatures for 1h and quenching. Referring to the result of X-ray diffraction, it was found that in recrystallization the starting point is 380℃ while the finishing point 450 ℃. The increase in recrystallization temperature is caused by the nail-up effect of highly dispersed ScAl3 precipitates on dislocation, and there crystallization process presents itself a nucleation mechanism with subgrain coalescence by means of TEM.
