累积叠轧焊制备的Cu-Nb层状复合材料织构演变  

Evolutionoftexture in Cu-Nb multilayer composites fabricated viaaccumulative roll bonding

作　　者：赵晓然 毛圣成[1] 蔡吉祥 秦斌 张泽[1,2] 韩晓东[1] 

机构地区：[1]北京工业大学固体微结构与性能研究所,北京100124 [2]浙江大学电子显微镜中心材料科学与工程学院,浙江杭州310027

出　　处：《电子显微学报》2017年第6期556-563,共8页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金面上项目(No.51471008);国家自然科学基金重点基金项目(No.51231008);北京市科技新星资助项目(No.Z141103001814108)

摘　　要：层状复合材料的高强度、高硬度、高热机械稳定性以及抗辐照损伤等优良的热力学性能都与材料中的异相界面及其织构密不可分。研究层状复合材料的异相界面结构及织构的演化是目前的研究热点之一。本文利用累积叠轧焊技术制备了单层厚度在微米到亚微米的Cu-Nb层状复合材料。利用电子背散射衍射(EBSD)技术分析了Cu和Nb的织构随轧制道次的演化规律,为更好的理解和设计异相界面,发展高力学性能材料提供了实验依据。The superior properties of multilayer composites, including high strength, high hardness, high ther^nomechanical stability and good resistance to radiation damage, are strong correlated with the hetero-phase interfaces and texture components. Therefore, the evolution of heterogeneous interface structures andtexture has become one of the research hotspots. In this study, we fabricate Cu-Nb multilayer composites using accumulative roll bonded （ARB） with individual layer thickness varies from micrometer to sub-micrometer. The evolution of the microstructures with the rolling cycle was characterized by electron backscatter diffraction （ EBSD）. Fiber plots are calculated from the orientation distribution functions in orderto understand the texture evolution in the Cu and Nb layers with increasing rolling cycle. This result provides experimental evidence for better understanding and designing of heterogeneous interfaces to develop high performance materials.

关 键 词：累积叠轧焊 CU-NB 织构演变 EBSD 

分 类 号：TB331[一般工业技术—材料科学与工程] TG111.7[金属学及工艺—物理冶金]