Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression

doi:10.1088/1674-1056/27/3/036101

	Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression
	Xiong L(熊伦); Liu J(刘景); Xiong, L; Liu, J
刊名	CHINESE PHYSICS B
	2018
卷号	27 期号:3 页码:36101
关键词	phase transition strength texture vanadium
ISSN号	1674-1056
DOI	10.1088/1674-1056/27/3/036101
文献子类	Article
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.
电子版国际标准刊号	1741-4199
WOS关键词	DIAMOND-ANVIL CELLS ; LATTICE STRAINS ; SILICONE FLUID ; DYNAMICS ; GPA ; NB
WOS研究方向	Physics
语种	英语
CSCD记录号	CSCD:6216904
WOS记录号	WOS:000428442600001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285774]
专题	高能物理研究所_多学科研究中心
通讯作者	Xiong L(熊伦)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Xiong L,Liu J,Xiong, L,et al. Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression[J]. CHINESE PHYSICS B,2018,27(3):36101.
APA	熊伦,刘景,Xiong, L,&Liu, J.(2018).Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression.CHINESE PHYSICS B,27(3),36101.
MLA	熊伦,et al."Structural phase transition, strength, and texture in vanadium at high pressure under nonhydrostatic compression".CHINESE PHYSICS B 27.3(2018):36101.