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

这是一个与工业界（GOALI）合作研究项目的学术联络拨款机会，旨在提高使用粉末冶金（P/M）工艺制造的高温合金的可制造性。坩埚压实金属是航空航天和能源关键应用的粉末冶金高温合金的领先制造商，是工业合作伙伴。学术参与者是一个跨学科的团队，代表了材料科学与工程和工业与制造工程。所采取的方法是将粉末冶金制造过程作为一个整体进行检查，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，然后影响最终特征的见解和关系，可以推断出提高可制造性的规定性模型。该模型将帮助工程师和工厂管理人员减少批次差异，持续改进加工步骤，形式化成功的操作操作和干预措施，并最终设计出符合或超过规格的产品，同时具有成本效益。实验和分析工作将进行两个最复杂和最重要的加工步骤：惰性气体雾化和热等静压。描述初始原材料的变量，不同制造步骤的机器设置，工厂的环境条件，操作人员的专业知识和行动，以及产品设计将与高温合金的性能联系起来，并通过详细的微观结构检查和彻底的材料测试来证明。通过推理和反演，流程到微观结构到属性的模型可以用来规定改进流程所要采取的步骤。

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.