合金成分对Cu-Ni合金薄带再结晶织构形成的影响  

Effect of Alloying Elements on the Formation of Recrystallization Texture of Cu-Ni Alloy Tapes

作　　者：王均安[1] 刘二微 陈纪昌[1] 王华明[1] 张志磊[1] 贺英[1] Wang Jun＇an Liu Erwei Chen Jichang Wang Huaming Zhang Zhilei He Ying(Shanghai University, Shanghai 200072, Chin)

机构地区：[1]上海大学,上海200072

出　　处：《稀有金属材料与工程》2016年第11期2975-2980,共6页Rare Metal Materials and Engineering

基　　金：上海市"科技创新行动计划"重大科技项目(11DZ1100303)

摘　　要：采用冷坩埚悬浮熔炼技术冶炼了Cu-18%Ni、Cu-32%Ni、Cu-52%Ni和Cu-72%Ni（原子分数）4种合金铸锭,铸锭经锻造、热轧、冷轧和再结晶退火,最终获得了厚度为80μm的薄带。采用背散射电子衍射（EBSD）技术表征了合金再结晶织构,利用高分辨透射电镜（HRTEM）分析了显微组织结构。结果表明,4种Cu-Ni合金冷轧后的形变织构相似,但随着合金薄带中Ni含量增加,再结晶退火后立方织构的份额减少,晶粒取向变得散乱,晶粒尺寸明显变大;合金成分处于52%~72%Ni范围时,形变合金在回复阶段的调幅分解是引起再结晶织构散乱的主要原因,Cu-Ni合金的单相固溶体是形变-再结晶后获得立方织构的关键因素。Cu-x%Ni（x=18, 32, 52, 72, atomic fraction） alloys were smelted by cold crucible induction levitation melting, and tapes with a final thickness of 80 μm were obtained after forging, hot rolling, cold rolling and recrystallization annealing. The recrystallization texture and microstructure of alloy tapes were characterized by electron backscatter diffraction technology（EBSD） and high resolution transmission electron microscopy（HRTEM） respectively. The results show that the deformation textures of these Cu-Ni alloys are similar. However, with the increase of Ni content, the volume fraction of cube texture in alloy tapes decreases after recrystallization annealing, the grain orientation scatters, and grains grow significantly. In the alloys with 52%~72%Ni, spinodal decomposition at the recovery stage is the main cause of scattered recrystallization texture; single-phase solid solution of Cu-Ni alloy is the key element in obtaining the cube texture after recrystallization.

关 键 词：CU-NI合金 再结晶织构 调幅分解 EBSD HRTEM 

分 类 号：TM24[一般工业技术—材料科学与工程] TG146.11[电气工程—电工理论与新技术]