Modified feedstock for AM of Stainless Steel
Abstract
With a growing demand for higher complexity components and efficient use of raw materials,additive manufacturing (AM), has revolutionized manufacturing in both development andapplication. Net shape manufacturing, suitability to low volume production runs, efficientmaterials usage to minimal or zero wastage, elimination of production steps, and flexibility aresome of the advantages of AM over conventional manufacturing methods. Defects andheterogeneities are introduced during the AM process, which leads to inferior corrosionresistance in the components produced by the AM. Most often post-processing is applied toeliminate the defects and improve the properties. However, post-processing is time-consuming,expensive, causes material wastage, and does not reflect the expected outcomes sometimes.The main objectives of the proposed research are to additively manufacture 316L stainless steelexhibiting high corrosion resistance and eliminate the need for post-processing. Feedstockmaterial for 316L will be modified using high-energy ball milling along with suitable additivesto achieve the proposed objectives. Additively manufactured 316L stainless steel produced bythe modified feedstock material is expected to exhibit high corrosion resistance in as printedcondition. Advanced electrochemical techniques in combination with the state-of-the-art surfacecharacterization techniques will be used to develop a mechanistic understanding of the corrosionbehavior of the additively manufactured 316L stainless steel. Deliverables of the project will benewly developed feedstock material to lead to high-quality additively manufactured 316Lstainless steel. The project will also have great educational and workforce development impacts.Graduate and undergraduate students working on the project will develop hands-on skills inusing advanced experimental techniques and abilities to work on multidisciplinary projects.Outcomes of the project will also be beneficial in teaching and designing new courses oncorrosion, manufacturing technologies, and alloy development.Abstract is Approved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 05, 2021
- Source ID
- N000142112489
Entities
People
- Rajeev Gupta
Organizations
- North Carolina State University
- Office of Naval Research
- United States Navy