|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Microstructural Analysis of IN 625 and MAR-M 247 Components Fabricated Using Powder Bed Additive Manufacturing
||Yi Li, Ji-Cheng Zhao
|On-Site Speaker (Planned)
Powder bed additive manufacturing (AM) was used to fabricate rods of IN 625, an alloy which is relatively easy to deposit via AM, as well as rods of MAR-M 247, one of the most difficult alloys to deposit via AM. IN 625 was found to have a basketweave microstructure which aligned with directional, largely-isolated pores. MAR-M 247 was found to have a substantial density of orthogonal cracking in the as-deposited state. The results of detailed analysis on the microstructure of the rods manufactured from each alloy will be presented. Powder bed additive manufacturing involves a high cooling rate for deposited materials, leading to nonequilibrium microstructures and segregation. Interactions between different factors such as residual stresses and solidification state will be discussed.
||Planned: A print-only volume