高压物理学报

冲击压缩下单晶LiF高压声速及卸载路径研究

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于锦泉 ¹^,² , 肖亚斌 ² , 周显明 ¹ , 谭华 ¹

高压物理学报 | 2005,19(3): 206-212

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高压物理学报 | 2005 , 19 (3) : 206 -212

冲击压缩下单晶LiF高压声速及卸载路径研究

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于锦泉¹^,², 肖亚斌², 周显明¹, 谭华¹

作者信息

^1.中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳　621900

^2.国防科技大学理学院，湖南长沙　410073

作者简介:

于锦泉（1980—），男，硕士研究生，主要研究方向为冲击波物理. E-mail：tt_zn@126.com

Study on Sound Velocity and Unloading Path for Single Crystal LiF under Shock Compression

Jin-Quan YU¹^,², Ya-Bin XIAO², Xian-Ming ZHOU¹, Hua TAN¹

Affiliations

^1.Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

^2.College of Science, National University of Defense Technology, Changsha 410073, China

出版时间: 2005-09-05

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摘要

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采用二级轻气炮加载手段，在5~79.1 GPa冲击压力范围内，利用加窗VISAR技术对氟化锂（LiF）单晶样品进行了研究，得到了不同冲击压力下的纵波声速、体积声速以及卸载路径。实验结果显示：单晶LiF沿冲击绝热线的Lagrange纵波声速随粒子速度呈线性变化；在5~79.1 GPa冲击压力下，单晶LiF并未发生熔化及其它相变；卸载路径及速度剖面弹塑性明显。

关键词

LiF / 逆向碰撞 / 高压声速 / 卸载路径 / VISAR

Abstract

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Symmetrical impact experiments for single crystal LiF were conduced at two-stage light-gas gun with a VISAR diagnostic. Longitudinal and bulk sound velocities, and unloading path of LiF were obtained up to 79.1 GPa shock pressure. Experimental results indicate a good linearity between the Lagrangian longitudinal sound velocity and the particle velocity. There is no evidence of shock-induced melting or phase transition for LiF in the present pressure range. The LiF unloading path and velocity profiles show a clear transformation from the elastic release to the plastic unloading.

Key words

LiF / reverse-impact / sound velocity / unloading path / VISAR

引用本文

于锦泉, 肖亚斌, 周显明, 谭华. 冲击压缩下单晶LiF高压声速及卸载路径研究. 高压物理学报, 2005 , 19 (3) : 206 -212 .

Jin-Quan YU, Ya-Bin XIAO, Xian-Ming ZHOU, Hua TAN. Study on Sound Velocity and Unloading Path for Single Crystal LiF under Shock Compression[J]. Chinese Journal of High Pressure Physics, 2005 , 19 (3) : 206 -212 .

基金

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国家自然科学基金(42105103-256)

参考文献

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2005年第19卷第3期

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接收时间：2004-01-17
首发时间：2026-10-31
出版时间：2005-09-05

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收稿日期：2004-01-17
修回日期：2005-01-13

基金

国家自然科学基金(42105103-256)

作者信息

^1.中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳　621900

^2.国防科技大学理学院，湖南长沙　410073

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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