Hot forging of emerging aluminum powder metallurgy alloys

新兴铝粉末冶金合金的热锻

• 批准号: 350505-2007
• 负责人: Bishop, DonaldPaul
• 金额: $ 7.61万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=431245
• 关键词: Hot; forging; emerging; aluminum; powder

Within the Canadian automotive sector there exists an unwavering need to manufacture high volumes of light weight, complex parts in an economical manner. Aluminum Powder Metallurgy (PM) is acknowledged as a new means by which this can be realized and now represents a rapidly expanding market in many countries. Unfortunately, there is effectively no Canadian presence in the commercial application of this technology. Hence, as opportunistic nations continue to capitalize Canada merely falls further behind. To help alleviate this deficiency, this proposal strategically unites academics with a leading PM parts manufacturer (GKN Sinter Metals) to conduct research at the forefront of aluminum PM science in Canada. Collectively, the team will conduct industrial research in St. Thomas, Ontario with the intent to devise hot forging procedures for a series of emerging aluminum PM alloys recently developed commercially at Ecka Granules or collaboratively at Dalhousie University and GKN. Included are materials designed for exceptionally high strength (Alumix 431D), high strength with enhanced wear resistance (Ecka Alumix 231, Dal/GKN Al-12Si), and sustained strength at elevated temperatures (Dal/GKN Al-15Ni). All are of proven industrial viability from the perspectives of die compaction and sintering and offer mechanical properties in the porous, as-sintered state that surpass those of conventional press-and-sinter aluminum PM blends in current use. Hot forging would enable full densification and significant property improvements, yet retain the key advantage of PM - near-net-shape processing. This innovative knowledge would then be applied in the industrial forging of automotive oil pump gears. Although gears are strategically targeted, a broad scope of applications is ultimately envisioned for this technology. Thus, to enhance the likelihood of widespread adaptation the team will also devise a complete database of mechanical properties and a full assessment of the corrosion behaviour inherent in the forged products. It is hoped that such developments will foster Canadian exploitation of aluminum PM and ultimately position Canada as a legitimate contender in this burgeoning industry.

加拿大汽车行业坚定不移地需要以经济的方式制造大量轻质、复杂的零件。 铝粉末冶金（PM）被认为是实现这一目标的新手段，目前在许多国家代表着一个快速扩张的市场。 不幸的是，加拿大实际上并没有参与这项技术的商业应用。 因此，随着机会主义国家继续利用加拿大，加拿大只会进一步落后。 为了帮助缓解这一缺陷，该提案战略性地将学术界与领先的粉末冶金零件制造商（GKN Sinter Metals）联合起来，在加拿大铝粉末冶金科学的前沿进行研究。 该团队将共同在安大略省圣托马斯市进行工业研究，旨在为最近在 Ecka Granules 商业开发或在达尔豪斯大学和 GKN 合作开发的一系列新兴铝合金粉末设计热锻造工艺。 其中包括专为极高强度 (Alumix 431D)、具有增强耐磨性的高强度 (Ecka Alumix 231、Dal/GKN Al-12Si) 和高温下持续强度 (Dal/GKN Al-15Ni) 设计的材料。 从模具压实和烧结的角度来看，所有这些都具有经过验证的工业可行性，并且在多孔烧结状态下提供的机械性能超过了当前使用的传统压制和烧结铝粉末冶金混合物的机械性能。 热锻造将实现完全致密化和显着的性能改进，同时保留粉末冶金的关键优势——近净成形加工。 这种创新知识随后将应用于汽车油泵齿轮的工业锻造。 尽管齿轮具有战略目标，但最终预计该技术将具有广泛的应用范围。 因此，为了提高广泛适应的可能性，该团队还将设计一个完整的机械性能数据库，并对锻造产品固有的腐蚀行为进行全面评估。 希望此类发展将促进加拿大对铝粉末冶金的开发，并最终使加拿大成为这一新兴行业的合法竞争者。