Devitrification-induced an Ultrahigh Strength Al-based Composite Maintaining Ductility  

作　　者：Dong Kan Xiaopeng Li Baijun Yang Hongwang Yang Jianqiang Wang 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences [2]School of Mechanical and Chemical Engineering,M050,The University of Western Australia [3]School of Materials Science and Engineering,Shenyang University of Technology

出　　处：《Journal of Materials Science & Technology》2015年第5期489-492,共4页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51131006,51071151)

摘　　要：A new Al-based composite consisting of submicron-sized α-Al matrix embedded with precipitated intermetallic phases was developed by controlling the devitrification process of an Al-Ni-Y-Co-La amorphous alloy.Such a homogeneous composite structure presented an ultrahigh strength of about 1.34 GPa and a large compressive plastic strain up to 22%.The unique mechanical properties during compression are mainly attributed to the dislocation slip deformation of ductile a-AI matrix and the shear-induced refinement of strengthening intermetallic phases.A new Al-based composite consisting of submicron-sized α-Al matrix embedded with precipitated intermetallic phases was developed by controlling the devitrification process of an Al-Ni-Y-Co-La amorphous alloy.Such a homogeneous composite structure presented an ultrahigh strength of about 1.34 GPa and a large compressive plastic strain up to 22%.The unique mechanical properties during compression are mainly attributed to the dislocation slip deformation of ductile a-AI matrix and the shear-induced refinement of strengthening intermetallic phases.

关 键 词：Al-rich metallic glass DEVITRIFICATION COMPOSITE M 

分 类 号：TB33[一般工业技术—材料科学与工程]