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Mechanically Driven Interstitial Atoms Redistributions and Steel Alloying
Author(s) -
Foct Jacques
Publication year - 2009
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.2374/sri09sp051
Subject(s) - materials science , nitriding , interstitial defect , metallurgy , diffraction , ab initio , mössbauer spectroscopy , crystallography , composite material , chemistry , layer (electronics) , physics , optoelectronics , organic chemistry , doping , optics
Mechanically driven interstitial atoms redistributions are exemplified by the case of FeI x (I = C or N) alloys obtained by ball milling in the concentration range 0.125 ≤ x ≤ 0.5 .The asymptotic completion of interstitial distribution depends on x and on the nature of the interstitial element (C or N) and was studied by Mössbauer spectrometry, X‐ray diffraction, TEM. It was proven that the distributions observed for similar C or N interstitial compositions could show very different as well as rather similar features. The reasons for these differences, such as provided by ab initio calculations, are discussed and the consequences on the structure of mechanically driven alloys are analysed. The influence of nano‐structuration on plasticity and the slow de‐nitriding process suggest some innovating transfer to the design of interstitial alloyed steel.