Specifics of mechanically driven atomic distributions In interstitial alloys

Foct, Jacques (2011) Specifics of mechanically driven atomic distributions In interstitial alloys. In: VI International Conference on Mechanochemistry and Mechanical Alloying (INCOME 2008), 1-4 December 2008, NML Jamshedpur, India.



Mechanically driven interstitial atoms distributions are exemplified in the case of FeIx (I = C or N) alloys obtained by ball milling process in the concentration range 0.05 ≤ x ≤ 0.5. With the chosen processing protocol, the asymptotic completion interstitial distribution depends on x and on the nature of interstitial (C or N) and not on the reactants which only have to respect the aimed nominal composition of the mixture. Mössbauer spectrometry results have proven that the distribution observed for similar interstitial compositions for C and for N are different. The grounds of these differences and the consequences on the structure of mechanically driven alloys are analysed, as well as the influence of nano-structuration on plasticity nanomechanisms. The role of stacking faults shown by diffraction and microscopy results as well as other lattice defects and phase transformation is examined.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/5083
Uncontrolled Keywords:Ball milling, Fe-N Fe-C alloys, Interstitial distributions, Nanostructure, Mössbauer spectroscopy, Inverse Hall Petch behaviour
Divisions:Metal Extraction and Forming
ID Code:5083
Deposited On:02 May 2012 12:05
Last Modified:02 May 2012 12:05
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