The yield point marks the beginning of plastic deformation for a solid subjected to sufficient stress, but it can alternatively be reached by x-ray irradiation. We characterize this latter route in terms of thermodynamics, structure and dynamics for a series of GeSe3 chalcogenide glasses with different amount of disorder. We show that a sufficiently long irradiation at room temperature results in a stationary and unique yielding state, independent of the initial state of the glass. The glass at yield is more disordered and has higher enthalpy than the annealed glass, but its properties are not extreme: they rather match those of a glass instantaneously quenched from a temperature 20% higher than the glass-transition temperature. This is a well-known, key temperature for glass-forming liquids which marks the location of a dynamical transition, and it's remarkable that different glasses upon irradiation head all there.

中文翻译：

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通过 X 射线诱导屈服制备的玻璃的独特性。


屈服点标志着承受足够应力的固体塑性变形的开始，但也可以通过 X 射线照射达到。我们从热力学、结构和动力学的角度描述了后一条路线，用于一系列具有不同无序程度的 GeSe3 硫属化物玻璃。我们表明，在室温下足够长的照射会产生静止且独特的屈服状态，与玻璃的初始状态无关。与退火玻璃相比，当产玻璃更无序，焓值更高，但其特性并不极端：它们与从比玻璃化转变温度高 20% 的温度瞬时淬火的玻璃的性能相当。这是众所周知的玻璃形成液体的关键温度，它标志着动态转变的位置，值得注意的是，不同的玻璃在照射时都在那里。