An electron probe X-ray microanalyzer (EPMA) is an essential tool for studying chemical composition distribution in the microstructure. Quantifying chemical composition using standard specimens is commonly used to determine the composition of individual phases. However, the local difference in chemical composition in the standard specimens brings t...
In this study, Charpy impact energy characteristics of three tempered martensitic steels were evaluated at room and low temperatures by instrumented Charpy impact tests, and were interpreted by fracture initiation and propagation mechanisms in relation with microstructural evolution of dynamically compressed specimens. As the tempering temperature ...
The vulnerability of tempered martensitic steel to hydrogen embrittlement (HE) has attracted attention from a number of researchers. Although utilizing carbide precipitation is one of effective methods to improve HE resistance, few studies have focused on the effects of carbide characteristics, such as the chemical composition and morphology of car...
The effect of a Cu addition on a hydrogen embrittlement (HE) was studied in Fe-17Mn-0.8C TWIP steels with 0-2 mass% of Cu. As-rolled and hydrogen-charged samples were investigated by examining their microstructures, tensile properties, fracture behaviors, and hydrogen-related characteristics. Diffusible hydrogen was mainly trapped at the grain boun...
Published in Metallurgical and Materials Transactions A
Synchrotron microtomography was used for in-situ characterization of high-temperature creep damage in leaded brass. Applying image registration to subsequent tomographic reconstructions, the volumetric growth rate of single cavities with equivalent radii between 2 and 4.3 μm was assessed. We conclude from the volume dependence of the growth rates t...
