Theoretical model that predicts the grain size of alloys inoculated with micro- and nano- particle master alloys and cast under an external field

预测在外场下孕育微米和纳米颗粒母合金并铸造的合金晶粒尺寸的理论模型

• 批准号: DP140100702
• 负责人: Em/Prof David St John
• 金额: $ 33.2万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-05-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140100702
• 关键词: Theoretical; model; predicts; grain; size

The aim of this project is to develop a theoretical model that predicts grain size when components are cast under the influence of external fields (electromagnetic, ultrasonic, pulsed electric current and melt shearing treatments) and with the addition of nano-particle master alloys. Refining microstructures by available master alloys is reaching a limit and this limits further improvement in mechanical properties to meet the challenge of new applications requiring, for example, high temperature properties or light weighting (for example, use of less material). The outcomes will be a new theoretical model, validated numerical models, new casting technologies and highly refined alloys with greater than 25 per cent improvement in mechanical properties.

本项目的目的是开发一种理论模型，预测在外场(电磁、超声波、脉冲电流和熔体剪切处理)影响下以及添加纳米颗粒中间合金时铸件的晶粒度。现有中间合金对显微组织的细化正在达到极限，这限制了机械性能的进一步改善，以满足新应用的挑战，例如，需要高温性能或轻量化(例如，使用较少的材料)。其结果将是一个新的理论模型、经过验证的数值模型、新的铸造技术和机械性能提高超过25%的高度精炼的合金。