Atomistic Mechanisms of Stress Relaxation in Amorphous Materials

非晶材料应力松弛的原子机制

• 批准号: DP0987811
• 负责人: Prof Peter Harrowell
• 金额: $ 12.13万
• 依托单位: The University of Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2009
• 资助国家: 澳大利亚
• 起止时间: 2009-06-05 至 2013-11-28
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0987811
• 关键词: Atomistic; Mechanisms; Stress; Relaxation; Amorphous

Amorphous materials represent a major thrust in the search for new materials. Metallic glasses have very high strength and can be cast to much finer tolerances than regular (polycrystalline) metals. Ceramic glasses are finding increasing applications in data storage, photoelectronics and fibre optics. The greatest obstacle to the application of amorphous solids is their brittleness. The goal of this project is to use accurate computer simulations to provide detailed pictures of how atomic motions relax stress in very different types of glasses and, through this insight, explore ways of modifying the mechanical properties of these materials.

非晶态材料是寻找新材料的主要动力。金属玻璃具有非常高的强度，并且可以铸造成比常规（多晶）金属更精细的公差。陶瓷玻璃在数据存储、光电子学和纤维光学方面的应用越来越多。非晶态固体应用的最大障碍是它们的脆性。该项目的目标是使用精确的计算机模拟来提供原子运动如何在非常不同类型的玻璃中放松应力的详细图片，并通过这种见解，探索修改这些材料的机械性能的方法。