项目名称: 液态Ti3Al基合金的微观结构研究
项目编号: No.11304081
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 李明
作者单位: 河南理工大学
项目金额: 30万元
中文摘要: 由于实验操作方面的困难以及液态物质结构本身的特殊性和复杂性,人们对液态物质结构的认识及理论研究进展一直很缓慢,目前,仍然没有成熟的理论模型给予液态物质满意的描述。钛合金因具有强度高、耐蚀性好、耐热性高等特点而被广泛用于飞机发动机压气机部件、火箭、导弹和高速飞机的结构件等领域,因此对在钛合金合成过程中起决定性作用的液态钛合金的研究显得至关重要。本项目拟选择性能优异的Ti3Al基合金为研究对象,利用金刚石对顶砧产生高温高压条件,研究液态Ti3Al基合金在不同条件下的X-射线衍射数据,结合电传输特性数据,以求揭示其微观结构特性;此外,本课题还拟开展液态钛合金体系微观结构的模拟计算研究,我们拟采用从头计算分子动力学模拟以及各种结构分析手段,对液态钛合金的微观结构进行模拟,将实验结果和理论计算数据相结合,试图阐述Ti3Al基合金微观结构特性,为截获高性能Ti3Al基合金材料甚至新型材料提供数据依据。
中文关键词: 金刚是对顶砧;激光加温;微结构;薄膜;
英文摘要: Due to the implementation difficulties in experiment as well as the specificity and complexity of liquid matters structure itself, the research progress in the structures of liquid matters have been very slow. Till now, no mature theoretical model has been given in the description of the liquid matters' structure. Titanium alloy has high strength, good corrosion resistance, high heat resistance and is widely used in the field of aircraft engine compressor components, rockets, missiles and high-speed aircraft structural parts, so the mother liquor of liquid titanium alloy 's research exhibits a vitally importance. The project is intended to select the high performance Ti3Al-based alloy as the object of study. Using the high temperature and high pressure conditions on the diamond anvil cell to study the X-ray diffraction and the electrical transmission characteristics, we intend to reveal the microstructure characteristics of liquid Ti3Al-based alloy; In addition, the subject is to be carried out to the simulation study in the microscopic structure of liquid Ti3Al-based alloy, we intend to use ab initio molecular dynamics simulations and a variety of structural analysis tools to simulate the microstructure of liquid Ti3Al-based alloy. Combining the experimental results and theoretical calculations, we try to elabo
英文关键词: diamond anvil cell;laser-heating systerm;microstructure;film;