GOALI/IUCP: Improving Manufacturability of Powder Metallurgy (P/M) Superalloys by Microstructural Control

DMI-9800430 Nettleship 这是学术与工业联络 (GOALI) 合作研究项目的资助机会，旨在提高使用粉末冶金 (P/M) 工艺制造的超级合金的可制造性。 Crucible Compaction Metals 是航空航天和能源关键应用领域粉末冶金高温合金的领先制造商，也是我们的工业合作伙伴。 学术参与者是代表材料科学与工程以及工业与制造工程的跨学科团队。 所采用的方法是从整体上检查 P/M 制造过程，目的是开发各种加工参数与最终产品机械性能之间的关系。利用描述加工如何首先影响微观结构，然后影响最终特性的见解和关系，可以推断出用于提高可制造性的规范模型。 该模型将帮助工程师和工厂经理减少批次变异性，持续改进加工步骤，规范成功的操作员行动和干预，并最终设计出满足或超过规格的产品，同时具有成本效益。将对两个最复杂和最重要的加工步骤进行实验和分析工作：惰性气体雾化和热等静压。 描述初始原材料、各个制造步骤的机器设置、工厂环境条件、操作员专业知识和行动以及产品设计的变量将与高温合金的性能相关联，这些性能通过微观结构的详细检查和彻底的材料测试来证明。 通过推理和反演，工艺到微观结构到性能的模型可用于规定改进工艺所需采取的步骤。

DMI-9800430 Nettleship This is a Grant Opportunities for Academic Liaison with Industry (GOALI) Collaborative Research project to improve manufacturability of superalloys made using the powder metallurgy (P/M) process. Crucible Compaction Metals, a leading maker of P/M superalloys for critical applications in aerospace and energy, is the industrial partner. The academic participants are an inter-disciplinary team representing materials science and engineering and industrial and manufacturing engineering. The approach taken is to examine the P/M manufacturing process as a whole with the objective being to develop relationships of the various processing parameters to the mechanical properties of the final product. Using insights and relationships that describe how processing affects first microstructure, then final characteristics, a prescriptive model for improving manufacturability can be inferred. This model will help engineers and plant managers reduce batch variability, make continuous improvements in the processing steps, formalize successful operator actions and interventions, and ultimately design products that meet or exceed specifications while being cost effective to make. Experimental and analytical work will be conducted for the two most complex and important processing steps: inert gas atomization and hot isostatic pressing. Variables describing the beginning raw materials, the machine settings at the various manufacturing steps, the ambient conditions in the plant, operator expertise and action, and the product design will be linked to the properties of the superalloy as evidenced by detailed examination of microstructure and thorough materials testing. Using inference and inversion, the models of process-to-microstructure-to-properties can be used to prescribe the steps to be taken to improve the process.