Effects of Additive Manufacturing Methods on the Dynamic Properties of 15-5PH Stainless Steel
Abstract
Experimental research was conducted to determine the dynamic properties and characterize the microstructure of 15-5PH Stainless Steel manufactured through Direct Metal Laser Sintering (DMLS) additive manufacturing (AM) processes and heat treated using common heat treatment protocols. A thorough understanding of the material's properties is necessary before such parts are utilized in an operational capacity. Of the five builds, two deviated significantly from the specified composition of 15-5PH stainless steel. The remaining three builds, possessing the desired composition and crystalline structure, were tested in compression and tension at two strain rates. Tension tests using a reected wave and a momentum trap SHB setup collected data reecting a natural variation within builds and across builds and orientation of typically less than 7 percent. A slight build orientation bias is noted resulting in higher ductility of the horizontal build orientation compared to the vertical of the same material. A simplistic linear interpolation of true stress-strain curves show fairly consistent strain softening trends at higher strain rates across the material subject sets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2016
- Accession Number
- AD1054545
Entities
People
- Allison A. Dempsey
Organizations
- Air Force Institute of Technology