将单晶奥氏体 FeCr18Ni12.5 不锈钢冲击压缩至 60 GPa

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-08-29 DOI:10.1063/5.0226622
Nathan P. Brown, Christopher R. Johnson, Paul E. Specht
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引用次数: 0

摘要

我们测量了奥氏体 FeCr18Ni12.5 不锈钢在约 60 GPa 下的休格尼奥特随晶体学方向的变化。我们通过大口径粉末喷枪中的 Ta 板冲击,将沿 ⟨100⟩、⟨110⟩ 和 ⟨111⟩取向的 FeCr18Ni12.5 样品冲击压缩至 30.5-58.1 GPa 的平均应力,并用激光干涉仪测量了自由表面速度。在每次实验中,我们都明确地观测到了⟨100⟩方向最大的冲击后自由表面速度,因此该方向的冲击速度最低。然而,通过用于计算冲击速度的阻抗匹配方案传播的实验不确定性产生了足够的不确定性重叠,从而排除了休格诺各向异性的明确结论。
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Shock compression of single-crystal austenitic FeCr18Ni12.5 stainless steel to 60 GPa
We measured the austenitic FeCr18Ni12.5 stainless steel Hugoniot as a function of crystallographic direction to approximately 60 GPa. We shock-compressed FeCr18Ni12.5 samples oriented along ⟨100⟩, ⟨110⟩, and ⟨111⟩ to mean stresses ranging 30.5–58.1 GPa via Ta plate impact in a large-bore powder gun and measured the free-surface velocities with laser interferometry. We unambiguously observed the largest post-shock free-surface velocity along ⟨100⟩ in each experiment, which consequently produced the lowest shock velocity along that orientation. However, the propagation of experimental uncertainties through the impedance matching scheme used to compute the shock velocity produced sufficient uncertainty overlap to preclude definitive conclusion of Hugoniot anisotropy.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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