摘要
采用常规的四辊冷轧设备对厚度为2.5mm的紫铜板经大变形多道次冷轧,最终轧成厚度为20μm的超细晶薄带材,在轧制过程中每隔5～8道次取样一次,检测分析紫铜在冷变形过程中组织结构和力学性能(抗拉强度、显微硬度)变化。结果表明:铜材的晶粒尺寸由原始材料的30μm减小到250nm;其强度和硬度随着变形量的增大而增加,最终强度比原始材料提高了约130MPa,显微硬度值提高了约30。
Large reduction and multiple passes are done on the red copper plate with thickness 2.5mm by using four-high cold rolling mill, Through rolling, the ultra-fine grain copper strip with thickness 20μm is acquired. The copper strip is sampled per 5～8 passes in rolling process. The microstrueture, tensile strength and microhardness are tested and their change is analyzed. The results show that the grain size of the copper strip is reduced from 30μm to 250hm.The tensile strength and hardness increase along with the augmentation of deformation. The tensile strength is increased by 130MPa, and the mierohardness is increased by 30.
出处
《山东冶金》
CAS
2006年第5期40-42,共3页
Shandong Metallurgy
关键词
超细晶铜带材
冷变形
位错
抗拉强度
ultra-fine grain copper strip
cold deformation
dislocation
tensile strength
