In-situ grain boundary engineering via metal additive manufacturing

通过金属增材制造进行原位晶界工程

• 批准号: DP230101063
• 负责人: Prof Sophie Primig
• 金额: $ 29.73万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2023
• 资助国家: 澳大利亚
• 起止时间: 2023-01-01 至 2025-12-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP230101063
• 关键词: situ; grain; boundary; engineering; via

We aim to develop a capability for targeted specialty alloy microstructure design via metal 3D printing. Our approach to generate customised grain boundary networks in stainless steels and superalloys will unlock superior mechanical, corrosion and technological properties, without subsequent thermomechanical treatments. Scientific outcomes are new physical metallurgy knowledge on the targeted selection of desirable interfaces via recrystallisation and coupled segregation-precipitation phenomena. Technological outcomes are processing maps for printing parts with customised microstructures. This will diminish anisotropy, residual stress and defects, benefitting defence, aerospace and energy applications, all vital to the Australian economy.

我们的目标是通过金属3D打印开发有针对性的特种合金微观结构设计的能力。我们在不锈钢和高温合金中生成定制晶界网络的方法将释放出优异的上级机械、腐蚀和技术性能，无需后续的热机械处理。科学成果是关于通过再结晶和耦合分离-沉淀现象有针对性地选择理想界面的新物理冶金知识。技术成果是打印具有定制微观结构的零件的加工图。这将减少各向异性，残余应力和缺陷，有利于国防，航空航天和能源应用，所有这些都对澳大利亚经济至关重要。