二元合金凝固过程中熔体结构与物理性质演化及其对凝固行为的影响

项目名称： 二元合金凝固过程中熔体结构与物理性质演化及其对凝固行为的影响

项目编号： No.51501029

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 赵岩

作者单位： 德州学院

项目金额： 20万元

中文摘要： 合金熔体的物理性质、结构及其在凝固过程中的演化对凝固后合金的的结构、状态以及性能具有重要的影响。本项目拟以二元合金为研究对象，从合金的物理性质和液态结构入手，利用高温粘度计、热膨胀仪、高温X射线衍射仪等设备，研究合金熔体在凝固过程中的物理性质与结构演化规律，获取不同合金在液相线附近液态结构演化与动力学行为的区别，揭示不同液固转变模式及其本质；探索合金熔体的物理性质与液态结构特征之间的内在联系，建立两者之间的定量关系模型；探讨液固区间两相碰撞竞争对液相结构以及凝固行为的影响；同时，为寻求基于液态结构与物理性质演化规律的合金玻璃形成能力判据提供新思路。该项目的研究结果将为丰富和发展凝固理论、金属材料的凝固过程控制以及新型金属材料的研究与开发提供理论依据与指导。

中文关键词： 熔体结构；物理性质；二元合金；凝固行为；玻璃形成能力

英文摘要： Physical property, liquid structure, and their evolutions in solidification process of alloy melts have significant effects on structure, state, and performance after solidification. In the present project, some binary alloys are chosen as the research objects. Evolutions of physical property and liquid structure will be researched in solidification process by high temperature viscometer, thermal dilatometer, high temperature X-ray diffractometer, etc. The differences of liquid structure evolution and dynamic behavior near liquidus among different alloys will be obtained to reveal different liquid-solid transformation patterns and their essences. The internal relations between physical properties and liquid structural characteristics of alloy melts will be explored and the quantitative relation model between them will be established. In liquid-solid interval, the influence of two-phase collision and competition on liquid structure and solidification behavior will be investigated. Meanwhile, the new thought for glass-forming ability of alloys will be provided based on evolutions of liquid structure and physical property. The results of this project will provide theory basis and guidance for enriching and developing of solidification theory, solidification process control, and researching and developing of new type metal materials.

英文关键词： liquid structure;physical property;binary alloy;solidification behavior;glass-forming ability