Annealing strengthening in magnesium alloys

镁合金的退火强化

• 批准号: DP160102278
• 负责人: Prof Jian-Feng Nie
• 金额: $ 27.4万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-03-01 至 2020-03-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP160102278
• 关键词: Annealing; strengthening; magnesium; alloys

The project seeks to develop new knowledge to inform the design of lightweight magnesium wrought alloys with more uniform mechanical properties. Magnesium extrusion alloys developed for improved fuel efficiency suffer from a tension–compression yield strength asymmetry problem: they are strong under tension but weaker under compression, thus limiting their use in high-strength applications. An unusual annealing strengthening phenomenon of magnesium extrusion alloys was recently discovered that offers a significant opportunity to solve this problem. This project plans to use advanced experimental techniques, including high-resolution electron microscopy to reveal the mechanisms underlying this annealing strengthening phenomenon. The outcomes are likely to form the scientific basis for developing next-generation magnesium wrought alloys.

该项目寻求开发新的知识，为设计具有更均匀机械性能的轻质镁锻造合金提供信息。为提高燃油效率而开发的镁挤压合金存在拉-压屈服强度不对称的问题：它们在拉伸下强度很高，但在压缩下强度较弱，因此限制了它们在高强度应用中的应用。最近发现了镁挤压合金的一种不寻常的退火强化现象，这为解决这一问题提供了一个重要的机会。该项目计划使用先进的实验技术，包括高分辨率电子显微镜来揭示这种退火强化现象背后的机制。这一结果很可能成为开发下一代镁变形合金的科学基础。