CAJ | 학술논문

以多种纯金属及合金的X射线衍射实验结果为基础,结合理论分析,从自由体积的角度探讨金属熔体原子团簇的微观热收缩现象,进一步揭示微观热收缩的本质及机制:熔体中原子团簇的微观热收缩,是熔体中自由体积膨胀较之宏观体积膨胀更为严重的结果,团簇结构的变化是导致其出现热收缩的根本原因.
이다충순금속급합금적X사선연사실험결과위기출,결합이론분석,종자유체적적각도탐토금속용체원자단족적미관열수축현상,진일보게시미관열수축적본질급궤제:용체중원자단족적미관열수축,시용체중자유체적팽창교지굉관체적팽창경위엄중적결과,단족결구적변화시도치기출현열수축적근본원인.
Micro-thermal contraction phenomenon of atom clusters in metal melts was discussed based on the X-ray diffraction experimental results of many pure metals and alloys, theoretical analysis and the free volume theory. The essentials and the mechanism of micro-thermal contraction were revealed. The micro-thermal contraction is the result of the expansion of free volume which is stronger than the expansion of melt volume. The structural change of clusters is the fundamental cause of thermal contraction.