High Temperature Cyclic Plastic Response of New-Generation ODS Alloy

Abstract

The very recently developed coarse-grained new-generation oxide dispersion strengthened (ODS) alloys containing 5 vol.% homogeneously distributed yttrium nano-precipitates seems to be a promising oxidation-resistant structural material for applications at temperatures above 1000 °C. The primary aim of the present paper is the introduction of the new-generation oxide dispersion strengthened (ODS) alloy and the first testing of its high temperature fatigue properties at 800 °C, concurrently demonstrating a novel and very efficient methodology by using an incremental fatigue step test. The successful application of the methodology motivates the authors to test the fatigue properties of new generation ODS alloys at 1000–1200 °C in the near future.

The Effect of Heat Treatment on the Tribological Properties and Room Temperature Corrosion Behavior of Fe–Cr–Al-Based OPH Alloy

“…The new Fe-Cr-Al-based OPH steel was prepared by metal powders using powder metallurgy [19]. The difference compared to other ODS steels is the use of a higher content of yttrium nano-oxides and aluminum [27][28][29][30]. In the first step, powders of Fe, Al, Y 2 O 3, and other components (Table 1) are mechanically alloyed in a vacuum in a low-energy ball mill developed by the authors.…”

Processing and Properties of Fe-10al-4cr-4y2o3 Oxide Dispersion Strengthened (Ods) Alloy Consolidated by Hot Rotary Swaging

“…Furthermore, the development of residual stresses and packing force, is crucial to obtain a fully compacted bar with minimal heterogeneity. This is very advantageous in the case of powder-based materials [8][9][10][11].…”