W0.75Re0.25合金在高达183 GPa高压下的弹性性能

IF 3.7 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review B Pub Date : 2025-04-21 DOI:10.1103/physrevb.111.134110

O. S. Pardo, P. Söderlind, R. E. Lim, C. C. Zurkowski, J. S. Smith, Zs. Jenei, E. F. O’Bannon

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引用次数: 0

摘要

W0.75Re0.25合金的高压状态方程是在金刚石-铁石细胞中用同步加速器角色散粉末x射线衍射测定到183 GPa和密度泛函理论测定到925 GPa的高压状态方程。W-Re合金用于许多工业高温应用，并作为高压金刚石砧电池研究中的密封垫材料。25 wt. % Re的加入在强度和延展性方面达到了最高的性能，同时还保持了体心立方（bcc）晶体结构，但迄今为止还没有对其在高压下的弹性行为进行研究。我们给出了实验和理论计算的体积和弹性压力响应，并系统地将这些结果与其他W-Re合金进行了比较，发现W-Re合金的体积模量随Re含量呈非线性变化，W0.75Re0.25在85 GPa时比W更不可压缩。2025年由美国物理学会出版

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Elastic properties of the W0.75Re0.25 alloy at high pressure up to 183 GPa

The high pressure equation of state for the W0.75Re0.25 alloy is experimentally determined up to 183 GPa with synchrotron angle-dispersive powder x-ray diffraction in the diamond-anvil cell and to ∼925 GPa with density-functional theory. W-Re alloys are used in many industrial high-temperature applications and as a confining gasket material in high-pressure diamond-anvil cell research. The inclusion of 25 wt. % Re achieves the highest performance in terms of strength and ductility while also maintaining the body-centered-cubic (bcc) crystal structure, yet to date there has been no investigation into its elastic behavior at high pressure. We present the experimentally and theoretically determined volumetric and elastic pressure response and systematically compare these results to other W-Re alloys, finding that the bulk modulus of W-Re alloys varies nonlinearly with Re content and W0.75Re0.25 becomes less incompressible than W at 85 GPa.

Published by the American Physical Society

2025

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来源期刊

Physical Review B 物理-物理：凝聚态物理

CiteScore

6.70

自引率

32.40%

发文量

审稿时长

3.0 months

期刊介绍： Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide. PRB covers the full range of condensed matter, materials physics, and related subfields, including: -Structure and phase transitions -Ferroelectrics and multiferroics -Disordered systems and alloys -Magnetism -Superconductivity -Electronic structure, photonics, and metamaterials -Semiconductors and mesoscopic systems -Surfaces, nanoscience, and two-dimensional materials -Topological states of matter