Phase identification during aging of some nitrided ferrous materials
作者： G. Hinojosa , J. Oseguera , P.S. Schabes-Retchkiman
DOI: 10.1016/S0040-6090(99)00196-0
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摘要: Abstract A characterization study of the phases formed during aging ferrous materials nitrided in a microwave post-discharge was performed by microhardness, electron microscopy (SEM, TEM and HREM) X-ray diffraction. Iron AISI-1010 steel samples were for 10 min at 840 K then quenched Ar 273 K. The annealed treatment times ranging from 0.5 h to 8 673 results microstructural show presence compact surface layer composed epsilon nitride (Fe 2 – 3 N). For iron, Fe 4 N needles appeared underneath after nitriding. During annealing, amount, size morphology change as time progresses. 16 also detected aging. amount this phase increases with time. microhardness measurements correlate changes.
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