Superheating-assisted melting and crystallization are prominent subjects in condensed matter physics. However, understanding the superheating concepts under acoustic shocked conditions remains a mystery. Herein, we demonstrate superheating on the basis of dynamic recrystallization in a D-tartaric acid powder sample, which nearly attains an ideal crystal structure and morphology under the 100-shocked conditions compared to the control sample and the obtained results are evaluated by conventional diffraction, spectroscopic and microscopic techniques. From the XRD results, the intensities of the planes (100) and (110) are found to have increased under the 100-shocked conditions, whereas the intensity ratio (011)/(110) has been significantly reduced. Moreover, the intensity ratio of major internal Raman modes such as v_C–O (1694 and 1700 cm⁻¹), v_C–H (2933 and 2967 cm⁻¹) and v_O–H (3331 and 3403 cm⁻¹) has been considerably modified with respect to the number of shock pulses such that the sample produces an ideal Raman spectrum of D-tartaric acid, and thereby the intensities of the lattice Raman modes also support this claim. Most importantly, the SEM results demonstrate the formation of an ideal morphology of D-tartaric acid from the irregular morphological pattern upon exposure to 100 shocks due to the superheating and dynamic recrystallization process. The proposed technique is strongly suggested for materials processing to enhance technological significance for all classes and scales of materials.

中文翻译：

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声冲击波诱导的过热辅助动态再结晶 – D-酒石酸的案例研究


过热辅助熔化和结晶是凝聚态物理学中的重要主题。然而，理解声冲击条件下的过热概念仍然是一个谜。本文展示了 D-酒石酸粉末样品中基于动态再结晶的过热，与对照样品相比，它在 100 次冲击条件下几乎达到了理想的晶体结构和形貌，并通过常规衍射、光谱和显微技术评估了所获得的结果。从 XRD 结果中可以看出，在 100 次冲击条件下，平面 （100） 和 （110） 的强度有所增加，而强度比 （011）/（110） 则显著降低。此外，主要内部拉曼模式的强度比，如 v_C-O（1694 和 1700 ^cm-1）、v_C-H（2933 和 2967 ^cm-1）和 v_O-H（3331 和 3403 ^cm-1）已根据冲击脉冲的数量进行了相当大的修改，因此样品产生理想的 D 拉曼光谱-酒石酸，因此晶格拉曼模式的强度也支持这一说法。最重要的是，SEM 结果表明，由于过热和动态重结晶过程，在暴露于 100 次冲击后，D-酒石酸从不规则的形态模式中形成了理想的形态。强烈建议将所提出的技术用于材料加工，以提高所有类别和规模材料的技术意义。