Deformation-Induced Dynamic Ferrite Transformation During Hot-Rolling in Oxide Dispersion-Strengthened Ferritic Steel with 9 Wt Pct Cr Content

Additively manufactured oxide dispersion strengthened nickel-based superalloy with superior high temperature properties

“…Its advantages mainly come from the high-density oxide nanoparticles that can fix grain boundaries/dislocations and act as a powerful sink for point defects caused by neutron radiation (Suryanarayana and Al-Aqeeli 2013;Zinkle and Snead 2014;Odette, Alinger, and Wirth 2008). The conventional manufacturing process routes of ODS alloy generally include ball milling, thermal consolidation like hot isostatic pressing (HIP) (Zhao et al 2017;Zhang et al 2016;Dadé et al 2017a), hot extrusion (HE) (Massey et al 2019;Seol et al 2018;Pal et al 2018), hot rolling (Kasai et al 2019;Masuda et al 2019), spark plasma sintering (Huang et al 2017;Gwalani et al 2019), and heat treatment (Aydogan et al 2018;Dadé et al 2017b). Although the traditional powder metallurgy process can obtain the uniform nano-scale dispersion ODS alloy with excellent performance, the long producing cycle and difficulty in manufacturing complex-shaped parts limit its broader application (Williams et al 2013;Chen and Dong 2011;Suryanarayana 2001).…”