Correlation of mechanical properties in bulk metallic glasses with ^(27)Al NMR characteristics  

作　　者：SANDOR Magdalena T KECSKES Laszlo J HE Qiang XU Jian WU Yue 

机构地区：[1]Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599-3255, USA [2]US Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USA [3]Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

出　　处：《Chinese Science Bulletin》2011年第36期3937-3941,共5页

基　　金：supported by the U. S. Army Research Office (W911NF-09-1-0343)

摘　　要：We report 27Al NMR and magnetic susceptibility measurements of Zr and ZrHf-based bulk metallic glasses (BMGs). 27Al NMR Knight shift shows that there exists a clear correlation between the local electronic properties at Al sites and mechanical properties. In addition,magnetic susceptibility measurements also provide clues on the influence of the electronic states,especially the strong influence of d-orbital characteristics on the mechanical properties of toughness and hardness.We report 27Al NMR and magnetic susceptibility measurements of Zr and ZrHf-based bulk metallic glasses （BMGs）. 27Al NMR Knight shift shows that there exists a clear correlation between the local electronic properties at Al sites and mechanical properties. In addition,magnetic susceptibility measurements also provide clues on the influence of the electronic states,especially the strong influence of d-orbital characteristics on the mechanical properties of toughness and hardness.

关 键 词：机械性能 核磁共振 大块非晶 合金铝 磁化率测量 大块金属玻璃 非晶合金 电子性质 

分 类 号：TG139.8[一般工业技术—材料科学与工程]