• Frelek-Kozak, M.
• Wyszkowska, E.
• Jóźwik-Biała, I.
• Chmielewski, M.
• Lewandowska, Małgorzata
• Jagielski, Jacek
• Perkowski, K.
• Kurpaska, L.
• Pawlak, W.

Abstract

The effects of consolidation process and low-energy ions (Ar+) irradiation on mechanical properties of 12% Cr,2% W, 0.25% Ti, 0.25% Y2O3 (%wt.) ODS RAF steel were investigated. Three types of samples, fabricated withdifferent methods: Spark Plasma Sintering (SPS), Hot Isostatic Pressing (HIP) and Hot Extrusion (HE) werestudied. The microstructure of obtained specimens were characterized by using High Resolution ScanningElectron Microscopy (HR-SEM) and Electron Backscatter Diffraction Analysis (EBSD) techniques. Each materialwas submitted to low energy (160 keV) Ar+ ion irradiation with fluences: 1014, 1015 and 1016 [ions/cm2] whatcorresponds to ~4 dpa of material damage. Mechanical properties were evaluated in micro- and nano-scale,using Vickers micro-hardness HV0.1 and nanoindentation method (NI). Conducted research shows that materialsmanufactured by using SPS and HIP processes exhibits very similar mechanical properties, although implementationof the first technique provide slightly better mechanical parameters of the specimen. Moreover,conducted in different volumetric scales experiments show that similar results were obtained by different mechanicaltest methods.

Topics

• microstructure
• scanning electron microscopy
• experiment
• steel
• hardness
• nanoindentation
• electron backscatter diffraction
• hot isostatic pressing
• sintering
• hot extrusion