Phenomenological investigations in light metal casting

轻金属铸造的现象学研究

• 批准号: 121755-2009
• 负责人: Ravindran, Comondore
• 金额: $ 2.91万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522198
• 关键词: Phenomenological; investigations; light; metal; casting

The rapidly evolving energy crisis provides an increased impetus for developing appropriate shaping processes for light alloys in the automotive and aerospace industries. Magnesium alloys are ~33% lighter than aluminum alloys and ~75% lighter than steel. This research program proposes to build upon extensive and pioneering research experience and knowledge in conventional and novel casting processes to develop magnesium alloys comparable to aluminum alloys in castability, minimal defects and superior in-service properties. It seeks to develop an enhanced understanding of the origin of casting defects and the role of various inclusions and other microstctural features with a view to improving melt cleanliness, heat flow and fillability. Also, it will result in an improvement of the the high temperature properties of magnesium alloys through suitable combination of alloying additions. Further, it seeks a better understanding of hot tearing during solidification of light alloys through measurement of associated residual strains and iterative modelling based on actual process parameters. It is envisaged that this can enable development of reliable criterion functions for predicting hot tear susceptibility.

快速发展的能源危机为汽车和航空航天工业开发合适的轻合金成形工艺提供了更大的动力。镁合金比铝合金轻33%，比钢轻75%。该研究项目旨在建立在传统和新型铸造工艺的广泛和开创性的研究经验和知识的基础上，开发可铸造性、最小缺陷和卓越的使用性能可与铝合金媲美的镁合金。它旨在提高对铸造缺陷起源的理解，以及各种夹杂物和其他微观结构特征的作用，以改善熔体清洁度、热流和填充性。通过适当的合金添加物组合，可以改善镁合金的高温性能。此外，它寻求通过测量相关的残余应变和基于实际工艺参数的迭代建模来更好地理解轻合金凝固过程中的热撕裂。据设想，这可以使可靠的准则函数的发展预测热撕裂敏感性。