|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical Behavior of Nanostructured Materials
||Nanostructured Ferritic Steels: Synthesis, Microstructure and Mechanical Properties
||Somayeh Pasebani, Indrajit Charit, Yaqiao Wu, Jatuporn Burns, James Cole, Darryl P. Butt
|On-Site Speaker (Planned)
It is a great honor to present a talk in the symposium honoring Professor Carl Koch who has made many seminal contributions to our understanding of nanocrystalline materials. In this work, an elemental powder mixture with a nominal composition of Fe-14Cr-1Ti-0.3Mo-0.5La<SUB>2</SUB>O<SUB>3</SUB> (wt.%) was mechanically alloyed for 0-20 h and subsequently consolidated using spark plasma sintering (SPS) under vacuum at 850-1050 <SUP>o</SUP>C for 7-45 min. The effect of process parameters on the densification behavior was investigated. The density of the specimens was measured via Archimedean principle, and mechanical properties via microhardness, shear punch and compression testing. Microstructural studies of the sintered specimens using TEM and EBSD revealed bimodal grain structure with a combination of nanocrystalline grains and ultrafine grains. In addition to Cr-rich particles, La-Ti-O based nanoclusters with high number density were noted to form. Mechanical properties of the developed alloys are discussed in terms of the operating strengthening mechanisms.
||Planned: Supplemental Proceedings volume