中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression

文献类型:期刊论文

作者Xiong, Lun1,2,3; Liu, Jing3
刊名Chinese physics b
出版日期2018-03-01
卷号27期号:3页码:7
关键词Phase transition Strength Texture Vanadium
ISSN号1674-1056
DOI10.1088/1674-1056/27/3/036101
通讯作者Xiong, lun(1094129778@qq.com)
英文摘要The structural phase transition, strength, and texture of vanadium have been studied under nonhydrostatic compression up to 70 gpa using an angle-dispersive radial x-ray diffraction technique in a 2-fold paranomic diamond anvil cell and up to 38 gpa using an angle-dispersive x-ray diffraction technique in a modified mao-bell diamond anvil cell at room temperature. we have confirmed a phase transition from body-centered cubic structure to rhombohedral structure at 27-32 gpa under nonhydrostatic compression. the radial x-ray diffraction data yields a bulk modulus k-0 = 141 (5) gpa and its pressure derivative k'(0) = 5.4 (7) for the bcc phase and k-0 = 154 (13) gpa with k'(0) = 3.8 (3) for the rhombohedral phase at psi = 54.7 degrees. the nonhydrostatic x-ray diffraction data of both bcc and rhombohedral phases yields a bulk modulus k-0 = 188 (5) gpa with k'(0) = 2.1 (3). combined with the independent constraints on the high-pressure shear modulus, it is found that the vanadium sample can support a differential stress of similar to 1.6 gpa when it starts to yield with plastic deformation at similar to 36 gpa. a maximum differential stress as high as similar to 1.7 gpa can be supported by vanadium at the pressure of similar to 47 gpa. in addition, we have investigated the texture up to 70 gpa using the software package maud. it is convinced that the body-centered cubic to rhombohedral phase transition and plastic deformation due to stress under high pressures are responsible for the development of texture.
WOS关键词DIAMOND-ANVIL CELLS ; LATTICE STRAINS ; SILICONE FLUID ; DYNAMICS ; GPA ; NB
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
语种英语
WOS记录号WOS:000428442600001
出版者IOP PUBLISHING LTD
URI标识http://www.irgrid.ac.cn/handle/1471x/2178125
专题高能物理研究所
通讯作者Xiong, Lun
作者单位1.Sichuan Univ Arts & Sci, Sch Intelligent Mfg, Dazhou 635000, Peoples R China
2.DaZhou Ind Technol Inst Intelligent Mfg, Dazhou 635000, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Xiong, Lun,Liu, Jing. Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression[J]. Chinese physics b,2018,27(3):7.
APA Xiong, Lun,&Liu, Jing.(2018).Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression.Chinese physics b,27(3),7.
MLA Xiong, Lun,et al."Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression".Chinese physics b 27.3(2018):7.

入库方式: iSwitch采集

来源:高能物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。