Overview of Materials Qualification Needs for Metal Additive Manufacturing
Overview of Materials Qualification Needs for Metal Additive Manufacturing
复制标题
DOI：
10.1007/s11837-015-1810-0
复制
发表时间：
2016-03-01
期刊：
影响因子：
2.6
通讯作者：
Lewandowski, John J.
中科院分区：
文献类型：
--
作者：
Seifi, Mohsen;Salem, Ayman;Lewandowski, John J.
本概述重点介绍了增材制造（AM）领域中有关材料认证需求的一些关键方面。AM技术在过去几年中经历了相当大的宣传和增长，许多成功的插入非关键任务应用程序。然而，为了充分发挥增材制造的潜力，特别是对于飞行关键部件（例如，旋转部件、磨损关键部件等），资格和认证工作是必要的。虽然鉴定标准的开发将解决其中的一些需求，但本概述概述了鉴定过程中需要考虑的其他一些关键领域，包括各种过程、微观结构和重新建模活动，以及将这些活动与针对特定组件的寿命活动相结合。凯斯西储大学先进制造和机械可靠性中心正在进行的工作主要集中在断裂和疲劳测试上，以快速评估一些钛合金在后处理前后的关键机械性能，此外还在通用电气使用微型计算机断层扫描进行无损检测/评估。卡内基梅隆大学正在进行工艺绘图研究，而MaterialsResources LLC正在进行大面积微结构表征和信息学（EBSD和BSE）分析，以使这些工作能够通过AM的集成计算材料工程方法在未来进行集成。提供了材料鉴定的未来可能途径。
This overview highlights some of the key aspects regarding materials qualification needs across the additive manufacturing (AM) spectrum. AM technology has experienced considerable publicity and growth in the past few years with many successful insertions for non-mission-critical applications. However, to meet the full potential that AM has to offer, especially for flight-critical components (e.g., rotating parts, fracture-critical parts, etc.), qualification and certification efforts are necessary. While development of qualification standards will address some of these needs, this overview outlines some of the other key areas that will need to be considered in the qualification path, including various process-, microstructure-, and fracture-modeling activities in addition to integrating these with lifing activities targeting specific components. Ongoing work in the Advanced Manufacturing and Mechanical Reliability Center at Case Western Reserve University is focusing on fracture and fatigue testing to rapidly assess critical mechanical properties of some titanium alloys before and after post-processing, in addition to conducting nondestructive testing/evaluation using micro-computerized tomography at General Electric. Process mapping studies are being conducted at Carnegie Mellon University while large area microstructure characterization and informatics (EBSD and BSE) analyses are being conducted at Materials Resources LLC to enable future integration of these efforts via an Integrated Computational Materials Engineering approach to AM. Possible future pathways for materials qualification are provided.