| Radial x-ray diffraction study of static strength of tantalum to 80 gpa | |
| Xiong, Lun1,2,3; Bai, Li-Gang3; Li, Xiao-Dong3; Liu, Jing3 | |
| 刊名 | Chinese physics letters
 |
| 2017-10-01 | |
| 卷号 | 34期号:10页码:5 |
| ISSN号 | 0256-307X |
| DOI | 10.1088/0256-307x/34/10/106101 |
| 通讯作者 | Xiong, lun(1094129778@qq.com) |
| 英文摘要 | We study the strength and texture of tantalum (ta) under uniaxial compression up to 80 gpa using an angle-dispersive radial x-ray diffraction technique together with the lattice strain theory in a diamond anvil cell at ambient temperature. the ratio of differential stress to shear modulus (t/g.) is found to remain constant above similar to 60 gpa, indicating that the ta starts to experience macro yield with plastic deformation at this pressure. combined with independent constraints on the high-pressure shear modulus, we find that the ta sample could support a differential stress of similar to 4.67 gpa when it starts to yield with plastic deformation at similar to 60 gpa under uniaxial compression. the differential stress in ta ranges from 0.216 gpa to 4.67 gpa with pressure increasing from 1 gpa to 60 gpa and can be expressed as l = 0.199(33) + 0.075(1) p, where p is the pressure in gpa. a maximum differential stress as high as similar to 5.37 gpa can be supported by ta at the high pressure of similar to 80 gpa. in addition, we investigate the texture of ta under nonhydrostatic compression to 80 gpa using the software package material analysis using diffraction. it is proven that the plastic deformation due to stress under high pressures is responsible for the development of texture. |
| WOS关键词 | DIAMOND-ANVIL CELL ; EQUATION-OF-STATE ; LATTICE STRAINS ; NONHYDROSTATIC COMPRESSION ; PRESSURE DERIVATIVES ; ELASTIC-MODULI ; TUNGSTEN ; MOLYBDENUM ; ALLOYS ; GOLD |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000423242200015 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2177925 |
| 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,Bai, Li-Gang,Li, Xiao-Dong,et al. Radial x-ray diffraction study of static strength of tantalum to 80 gpa[J]. Chinese physics letters,2017,34(10):5. |
| APA | Xiong, Lun,Bai, Li-Gang,Li, Xiao-Dong,&Liu, Jing.(2017).Radial x-ray diffraction study of static strength of tantalum to 80 gpa.Chinese physics letters,34(10),5. |
| MLA | Xiong, Lun,et al."Radial x-ray diffraction study of static strength of tantalum to 80 gpa".Chinese physics letters 34.10(2017):5. |
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