Hybridizing micro-Ti with nano-B_(4)C particulates to improve the microstructural and mechanical characteristics of Mg-Ti composite  

作　　者：S.Sankaranarayanan S.Jayalakshmi M.Gupta 

机构地区：[1]Department of Mechanical Engineering,National University of Singapore(NUS),9 Engineering Drive 1,Singapore 117576,Singapore

出　　处：《Journal of Magnesium and Alloys》2014年第1期13-19,共7页镁合金学报（英文）

摘　　要：In this study,the effects of hybridizing micron-sized titanium particles with nano-sized boron carbide particles on the microstructural and mechanical properties of Mg-Ti composite were investigated.Microstructural characterization revealed grain refinement attributed to the presence of uniformly distributed micro-Ti particles embedded with nano-B_(4)C particulates.Electron back scattered diffraction(EBSD)analyses of the Mg-(Ti+B_(4)C)BM hybrid composite showed relatively more localized recrystallized grains and lesser tensile twin fraction,when compared to Mg-Ti.The evaluation of mechanical properties indicated that the best combination of strength and ductility was observed in the Mg-(Ti+B_(4)C)BM hybrid composite.The superior properties of the Mg-(Ti+B_(4)C)BM hybrid composite when compared to Mg-Ti can be attributed to the presence of nano-reinforcement,the uniform distribution of the hybridized particles and the better interfacial bonding between the matrix and the reinforcement particles achieved by nano-B_(4)C addition.

关 键 词：Composite materials Electron microscopy(SEM) Electron diffraction(electron back scattered diffraction) Mechanical properties 

分 类 号：TG1[金属学及工艺—金属学]