Effects of thermal ageing and ion irradiation on intergranular P segregation in low alloy steel welds
Source abstract
Abstract
Quantitative study of solute segregation phenomenon is crucial in material science. In the present study, the influence of thermal ageing and ion irradiation (both at 400 °C) on intergranular P segregation behaviour was studied by a correlative electron backscattering diffraction (EBSD)/transmission kikuchi diffraction (TKD)/atom probe tomography (APT) methodology. The co-segregation of P, C, Si, Mn, Ni, Cr and Mo appears at grain boundaries (GBs). After both thermal ageing and ion irradiation, there is an increased P segregation for all the detected GB types. The radiation induced/enhanced solute diffusion and segregation mechanisms were also discussed based on thermodynamic and kinetic predictions. The ternary Fe-P-C model overestimates P segregation level in a multicomponent system.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and Mechanical Properties of Steels · Welding Techniques and Residual Stresses · Fusion materials and technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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