Shear-driven instability in zirconium at high pressure and temperature and its relationship to phase-boundary behaviors
Shear-driven instability in zirconium at high pressure and temperature and its relationship to phase-boundary behaviors
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高温高压下锆的剪切驱动不稳定性及其与相界行为的关系
DOI：
10.1103/physrevb.95.134101
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发表时间：
2017
影响因子：
3.7
通讯作者：
C. Kenney
中科院分区：
文献类型：
--
作者：
M. Jacobsen;N. Velisavljevic;Y. Kono;Changyong Park;C. Kenney
通过结合使用超声波、衍射和射线照相技术，已经确定了支持高温高压下的锆切变驱动异常的证据。通过与弹性和热特性相关的热声参数，探讨了这些参数对相图的影响。特别是，我们的结果说明了在高温和压力下，温度和相之间的偏离相边界，称为扭结。此外，这种材料在更极端的温度和压力下的对分布研究表明了在这种材料中发生扩散的规模。这些可能的解释可以通过检查其他系统中的剪切驱动异常来作出。
Evidence in support of a shear driven anomaly in zirconium at elevated temperatures and pressures has been determined through the combined use of ultrasonic, diffractive, and radiographic techniques. Implications that these have on the phase diagram are explored through thermoacoustic parameters associated with the elasticity and thermal characteristics. In particular, our results illustrate a deviating phase boundary between theandphases, referred to as a kink, at elevated temperatures and pressures. Further, pair distribution studies of this material at more extreme temperatures and pressures illustrate the scale on which diffusion takes place in this material. Possible interpretation of these can be made through inspection of shear-driven anomalies in other systems.