摘要
采用铜模喷铸的方法制备得到快速凝固态ZK60镁合金,并通过X射线衍射仪,扫描显微镜和能谱分析仪对铸态、挤压态和快速凝固态ZK60镁合金的组织结构及相的组成进行表征。结果发现:快速凝固态ZK60镁合金的组织均匀细小,并且样品中弥散分布着颗粒状的MgZn相,除此之外,该合金中还存在尺寸较大的富Zr共晶团。通过压缩实验发现,快速凝固态ZK60镁合金具有高强度,其压缩断裂强度达到444MPa,远高于铸态和挤压态。
Rapid solidified ZK60 magnesium alloy was prepared by copper mold casting.The microstructure of the as-cast,as-extruded and rapid solidified ZK60 magnesium alloys were analyzed by X-ray diffractometer（XRD） and scanning electron microscope（SEM）.The results show that the microstructure of rapid solidified ZK60 magnesium alloys are refined and MgZn phases in dispersed particles are uniformly distributed in the matrix.In addition,the eutectic microstructure with high Zr content can be found in the matrix.The compression strength of rapid solidified ZK60 magnesium alloys were higher than those of as-cast and as-extruded conditions,e.g.an ultimate strength of 444MPa in rapid solidified ZK60 magnesium alloys.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2011年第8期32-35,41,共5页
Journal of Materials Engineering
基金
国家重点基础研究发展计划(973)资助项目(2007CB613704)
国家自然科学杰出青年基金资助项目(50725413)
重庆市科技攻关计划资助项目(cstc2008AB4114)
重庆市科委资助项目(2010CSTC-HDLS)
关键词
快速凝固
镁合金
压缩性能
rapid solidification
magnesium alloy
compression property
