|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Applications Utilizing Irradiation and Integrated Modeling
||H-9: Microstructure and Mechanical Behavior of Directed Energy Deposition Laser Additively Manufactured T-91
||Jack Peterson, Adi Benartzy, Stuart A Maloy, Thomas J Lienert, Peter Hosemann
|On-Site Speaker (Planned)
The diverse capabilities of additive manufacturing (AM) make it a highly attractive processing method for the nuclear engineering community. Direct energy deposition selective laser melting (DED-SLM) process was used to manufacture T-91, a creep and radiation resistant martensitic stainless steel. The AM steel was found to be tempered martensite, with residual compositional gradients induced by the heat-affected zone of the laser process. Tensile testing showed that the as AM material had a slight decrease in yield stress and a major increase in elongation to fracture in comparison to wrought T-91. Tempering of the AM material induced a reduction in both properties. It was established that AM using DED-SLM might be an effective processing method for T-91. The data on T-91 is further compared to 420SS as well as a more common material.