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(NbTi)C nanoparticles were prepared using mechanical alloying (MA) and heat treatment process, and the nanoparticles pre-dispersed with Fe powder were introduced to 1045 steel. The microstructure of powders during different ball milling steps and as-casted steels were investigated using optical microscope (OM), scanning electron microscope (SEM), X-ray diffractometer (XRD) and transmission electron...
Thermodynamically stable C3N phases in the pressure range of 0–100GPa are searched and calculated by ab initio evolutionary algorithm and density functional theory. Ground-state C3N phase at ambient pressure is predicted to be a layered structure with Cmmm space group. The previously reported Fd3¯m phase exists only in the narrow pressure range of 6.1–7.4GPa, which transforms into a P3¯m1 phase at...
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