磁驱动斜波加载下铋的Ⅰ-Ⅱ-Ⅲ相变实验

种涛; 谭福利; 王桂吉; 赵剑衡; 唐志平

doi:10.11858/gywlxb.20180511

磁驱动斜波加载下铋的Ⅰ-Ⅱ-Ⅲ相变实验

doi: 10.11858/gywlxb.20180511

种涛^{1, 2,},
谭福利²,
王桂吉²,
赵剑衡^2,*, ,,
唐志平¹

1.
中国科学技术大学近代力学系, 安徽合肥 230027
2.
中国工程物理研究院流体物理研究所, 四川绵阳 621999

基金项目:

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

详细信息

作者简介:
种涛(1986-), 男, 博士, 主要从事动高压加载技术和材料动力学行为研究.E-mail:maoda318@163.com

通讯作者:
赵剑衡(1969-), 男, 博士, 研究员, 博士生导师, 主要从事强激光破坏机理、爆轰物理、冲击动力学、超高速发射和超高压力加载技术研究.E-mail:jianh_zhao@caep.cn

中图分类号: O521.2
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出版历程
- 收稿日期: 2018-01-29
- 修回日期: 2018-03-19

Ⅰ-Ⅱ-Ⅲ Phase Transition of Bismuth under Magnetically Driven Ramp Wave Loading

CHONG Tao^{1, 2
,},
TAN Fuli²,
WANG Guiji²,
ZHAO Jianheng^{2,*
, ,},
TANG Zhiping¹

1.
Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
2.
Institute of Fluid Physics, CAEP, Mianyang 621999, China

摘要

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275.7 m/s下降到239.4和259.7 m/s。
- 斜波压缩 /
- 初始温度 /
- 相变 /
- 铋 /
- 速度剖面
Abstract: 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 of Ⅰ-Ⅱ and Ⅱ-Ⅲ phase transition decreases from 251.6 and 275.7 m/s to 239.4 and 259.7 m/s, respectively.
- ramp wave compression /
- initial temperature /
- phase transition /
- bismuth /
- velocity profile

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图 1 磁压加载原理及实验布局

Figure 1. Schematic of the magnetically driven ramp wave loading experiments

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图 2 升温实验负载区布局

Figure 2. Layout of loading area in heating experiment

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图 3 铋样品自由面速度剖面及相图

Figure 3. Free surface velocities and phase diagram of bismuth

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表 1 实验条件

Table 1. Experimental conditions

Exp.No.	T₀/℃	Position	Material	Dimension
Shot 342	100	Plate Sample Bedding	Al Bi Sapphire	10.0 mm×30.0 mm×0.971 mm ∅7.9 mm×1.178 mm 10.0 mm×28.0 mm×0.800 mm
Shot 343	148	Plate Sample Bedding	Al Bi Sapphire	10.0 mm×30.0 mm×1.001 mm ∅7.9 mm×1.131 mm 10.0 mm×28.0 mm×0.798 mm
Shot 344	25	Plate Sample Bedding	Al Bi Sapphire	10.0 mm×30.0 mm×0.983 mm ∅7.9 mm×1.150 mm 10.0 mm×28.0 mm×0.796 mm

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表 2 两次相变对应的特征速度和压力

Table 2. Characteristic free surface velocities and pressures corresponding to the two phase transitions

Exp.No.	T₀/℃	Characteristic velocity/(m·s^-1)		Phase transition pressure/GPa
Exp.No.	T₀/℃	Ⅰ-Ⅱ	Ⅱ-Ⅲ	Ⅰ-Ⅱ	Ⅱ-Ⅲ
Shot 344	25	251.6	275.7	2.53	2.81
Shot 342	100	244.9	266.0	2.45	2.69
Shot 343	148	239.4	259.7	2.39	2.62

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