Third Order Elastic Constants and Anharmonic Properties of the Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10.0)Be_(22.5) Bulk Metallic Glass  

作　　者：WANG Ru-Ju LI Feng-Ying QIN Zhi-Cheng WANG Wei-Hua 王汝菊;李凤英;秦志脑;汪卫华(Institute of Physics,Chinese Academy of Sciences,Beijing 100080)

机构地区：[1]Institute of Physics,Chinese Academy of Sciences,Beijing 100080

出　　处：《Chinese Physics Letters》2001年第3期414-415,共2页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.19874075 and 59871059.

摘　　要：The longitudinal velocity Vl and shear velocity Vs of ultrasonic wave propagated along arbitrary three perpendicular directions of the Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10.0)Be_(22.5) bulk metallic glass(Zr/Ti BMG)have been measured at ambient pressure,under hydrostatic pressure(up to 0.5 GPa)and uniaxial compression(up to 70 MPa)using the pulse echo overlap method.The third order elastic constants and the Grüneisen parameter related to the anharmonic properties were derived and discussed.It was found that the BMG with marked different microstructural characteristics comparing with the amorphous carbon exhibited different behaviours related to shear vibratory under high pressure.

关 键 词：ELASTIC HARMONIC HYDROSTATIC 

分 类 号：TG1[金属学及工艺—金属学]