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Yield strength of molybdenum at high pressures
Jing, QM; Bi, Y; Wu, Q; Jing, FQ; Wang, ZG; Xu, J; Jiang, S; Jiang S(蒋升)
2007
发表期刊REVIEW OF SCIENTIFIC INSTRUMENTS
卷号78期号:7页码:73906
通讯作者SW Inst Fluid Phys, Lab Shock Wave & Detonat Phys Res, Sichuan 621900, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要In the diamond anvil cell technology, the pressure gradient approach is one of the three major methods in determining the yield strength for various materials at high pressures. In the present work, by in situ measuring the thickness of the sample foil, we have improved the traditional technique in this method. Based on this modification, the yield strength of molybdenum at pressures has been measured. Our main experimental conclusions are as follows: (1) The measured yield strength data for three samples with different initial thickness (100, 250, and 500 mu m) are in good agreement above a peak pressure of 10 GPa. (2) The measured yield strength can be fitted into a linear formula Y=0.48(+/- 0.19)+0.14(+/- 0.01)P (Y and P denote the yield strength and local pressure, respectively, both of them are in gigapascals) in the local pressure range of 8-21 GPa. This result is in good agreement with both Y=0.46+0.13P determined in the pressure range of 5-24 GPa measured by the radial x-ray diffraction technique and the previous shock wave data below 10 GPa. (3) The zero-pressure yield strength of Mo is 0.5 GPa when we extrapolate our experimental data into the ambient pressure. It is close to the tensile strength of 0.7 GPa determined by Bridgman [Phys. Rev. 48, 825 (1934)] previously. The modified method described in this article therefore provides the confidence in determination of the yield strength at high pressures (c) 2007 American Institute of Physics.
学科领域Instruments & Instrumentation; Physics
研究领域[WOS]Instruments & Instrumentation ; Physics ; Instruments & Instrumentation ; Physics
DOI10.1063/1.2758549
URL查看原文
语种英语
研究领域[WOS]Instruments & Instrumentation ; Physics ; Instruments & Instrumentation ; Physics
WOS类目Instruments & Instrumentation ; Physics, Applied
WOS记录号WOS:000248486300042
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240764
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Jing, QM,Bi, Y,Wu, Q,et al. Yield strength of molybdenum at high pressures[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2007,78(7):73906.
APA Jing, QM.,Bi, Y.,Wu, Q.,Jing, FQ.,Wang, ZG.,...&蒋升.(2007).Yield strength of molybdenum at high pressures.REVIEW OF SCIENTIFIC INSTRUMENTS,78(7),73906.
MLA Jing, QM,et al."Yield strength of molybdenum at high pressures".REVIEW OF SCIENTIFIC INSTRUMENTS 78.7(2007):73906.
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