Microstructural modelling of metal formability

金属可成形性的微观结构建模

• 批准号: 341874-2007
• 负责人: Inal, Kaan
• 金额: $ 1.35万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=482333
• 关键词: Microstructural; modelling; metal; formability

Vehicle efficiency (in terms of fuel consumption) and reduction of carbon dioxide emissions continues to be a major challenge. The weight of automobiles can be reduced by using high-strength steels as long as they have the essential ductility required in metal forming operations. Furthermore, light metal alloys (magnesium and aluminum) are of considerable interest to automobile manufacturers because of their low densities and the appreciable weight (and energy) savings that would result from increased use. However, the lower ductility of light metal alloys compared to steel continues to remain a bottleneck for widespread replacement of steel by light metals. Ductility is a microstructure and temperature-sensitive property and enhancement of the ductility of light metals (such as aluminum and magnesium) and high-strength steels (such as dual phase steels) could be achieved through microstrucutural control. The proposed research will combine the latest advancements in the field of micromechanics (advanced realistic material models), finite element methods and supercomputing (parallel computing) for the ultimate goal of numerically engineering microstructures that present the necessary formability desired for any given metal forming operation.

车辆效率（就燃料消耗而言）和减少二氧化碳排放量仍然是一项重大挑战。汽车的重量可以通过使用高强度钢来减轻，只要它们具有金属成形操作所需的基本延展性。此外，轻金属合金（镁和铝）由于其低密度和增加使用将导致的可观的重量（和能量）节省而引起汽车制造商的相当大的兴趣。然而，与钢相比，轻金属合金的较低延展性仍然是用轻金属广泛替代钢的瓶颈。塑性是一种微观结构和温度敏感性，通过控制微观结构可以提高轻金属（如铝和镁）和高强度钢（如双相钢）的塑性。拟议的研究将结合联合收割机在微观力学（先进的现实材料模型），有限元方法和超级计算（并行计算）领域的最新进展，为最终目标的数字工程微观结构，目前所需的任何给定的金属成形操作的必要的可成形性。