Transmission electron microscopy characterization of the nanofeatures in nanostructured ferritic alloy MA957
Source abstract
Abstract
Abstract Bright field transmission electron microscopy (TEM), high-resolution transmission electron microscopy, scanning transmission electron microscopy and energy dispersive X-ray spectroscopy were combined to comprehensively characterize the Ti–Y–O enriched nanoscale features (NF) in a nanostructured ferritic alloy (NFA), MA957. The characterization included the NF number densities, size distributions, volume fractions, crystal structures and compositions. In-foil measurements were complemented by studies of NF on C extraction replica foils. The conditions examined included: two heats of extruded MA957, one of these heats following long-term thermal aging at 1000 °C for 19.53 kh, and two friction-stir-weld variants. The study revealed the presence of diffracting complex oxide phases that varied somewhat with the feature size. However, the smallest features, with diameters (d)
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Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Advanced Materials Characterization Techniques
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