摘要
设计了一套与磁驱动斜波加载实验装置CQ-4配套的样品预设温度系统,温度范围为室温至180℃。利用此装置联合双源光外差测速系统,完成了不同初始温度下铋的斜波压缩相变实验,并在单发实验中获得了同时含有Ⅰ-Ⅱ和Ⅱ-Ⅲ两次相变信息的速度剖面。实验结果显示,随着铋的初始温度从室温提高到148℃,Ⅰ-Ⅱ相变和Ⅱ-Ⅲ相变起始对应的特征拐点速度分别从251.6和275.7m/s下降到239.4和259.7m/s。
In this study,we developed a sample pre-heating system with the temperature range from room temperature to 180℃,matching with the magnetically driven apparatus CQ-4.The ramp wave compression experiments of bismuth under different initial temperatures(25-148℃)were carried out,using this pre-heating system on CQ-4.The free surface velocity profiles,measured by a dual laser heterodyne velocimetry,show clearly two phase transitions of bismuth during the compression.Furthermore,with the initial temperature increasing from room temperature to 148℃,the characteristic free surface velocities corresponding to the onsets ofⅠ-ⅡandⅡ-Ⅲphase transition decreases from 251.6 and 275.7 m/s to 239.4 and 259.7 m/s,respectively.
作者
种涛
谭福利
王桂吉
赵剑衡
唐志平
CHONG Tao;TAN Fuli;WANG Guiji;ZHAO Jianheng;TANG Zhiping(Department of Modern Mechanics,University of Science and Technology of China, Hefei 230027,China;Institute of Fluid Physics,CAEP,Mianyang 621999,China)
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2018年第5期25-30,共6页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金委重大科研仪器设备专项(11327803)
四川省青年科技创新研究团队专项计划项目(2016TD0022)
科学挑战专题(JCKY2016212A501)
关键词
斜波压缩
初始温度
相变
铋
速度剖面
ramp wave compression
initial temperature
phase transition
bismuth
velocity profile
