摘要
通过感应熔炼、铸造、锻造和冷拔变形制备了Cu-15Cr—0．1Zr原位复合材料。采用SEM和TEM观察分析纤维相组织形态的演变。在较低的应变量下纤维保持着与铸态树枝晶相同的bcc单晶结构，在较高的应变量下，单根Cr纤维被分隔为一些由亚晶界组成的亚结构，相邻亚晶的偏差角在5～30°之间。
Cu-15Cr-0.1Zr in situ metal matrix composites were taorlcated by inductive and cold drawing. The morphology of the fibers in Cu matrix were observed using SEM and TEM. At lower drawing strains, some of Cr fibers have the same bcc single crystal structure as that of dendrites in the as east state. At higher drawing strains, a single fiber was divided into sub-grains. These sub-grains are separated by sub-grain boundaries. Relative angle differences across the sub-grain boundaries are about 5-30°.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第12期2011-2014,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50571035)
国家高技术研究发展计划(863计划)资助项目(2006AA03Z528)
关键词
原位复合材料
Cr纤维
亚晶
组织演变
in-situ composite Cr fibers sub-grain
mierostrueture evolvement
